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3.4.6 The Excretory System in the Human 1
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Q. What is meant by the term excretion?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. State the role of the kidneys in homeostasis.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. What tube/structure connects the kidney to the bladder?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Explain the term plasma.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Explain why red blood cells are normally absent from glomerular filtrate.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Urea is an excretory product. Name a substance from which it is derived.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Where in the human kidney does re-absorption take place?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Name the blood vessel that supplies blood to a kidney.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. In which cavity of the body are the kidneys located?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Name one substance, other than water, excreted in the urine.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Why is glucose normally absent from urine?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Give a feature of the kidney which indicates that it is an exocrine gland.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Mention one method of excretion in flowering plants.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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for the Next Question
Q. Name the tube/structure that delivers urine outside the body.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Explain the term glomerular filtrate.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Carbon dioxide is an excretory product. Name a substance from which it is derived.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. What is the source of the heat that keeps the body at a fairly constant temperature?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
Please CLICK on THIS BOX
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Q. From which blood vessel does the renal artery arise?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. The concentration of glucose is the same in plasma and glomerular filtrate. Why is this?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. State two responses that result when body temperature begins to drop.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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for the Next Question
Q. State two ways in which the body is insulated against loss of heat.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Describe the ways in which the body responds when its internal temperature rises above the normal level.
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. Explain briefly how sweating assists in the shedding of excess heat
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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Q. What is an endotherm?
Abdominal; Abdomen
Carbohydrate; Fat; Fatty acids
Glucose is small and passes through
Fat/Adipose tissue; Trapped air/Hair
Elimination of waste products of metabolism
Piloerection; Vasoconstriction; Brain initiates increased
metabolic rate
Maintaining water/salt balance; Osmoregulation
Liquid part of the blood
Has ducts; Does not produce hormones
Protein; Amino acid
Renal artery
Film of H2O on body surface, heated by the body; water evaporates with the heat,
body left cooler
Too big to pass into Bowman’s capsule
Urea; Salt; Uric acid
Plasma that has entered Bowman’s capsule
Vasodilation; Sweat secretion; Hairs lie flat, less air trapped
Urethra
Ureter
Usually reabsorbed
Animal that produces its own body heat; Body temp independent of
environment temp
Proximal convoluted tubule
Aorta
Respiration
Diffusion; Transpiration; Through lenticels or stomata;
Leaf fall
CONGRATULATIONS
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