Respiratory and Excretory Systems

Vocabulary

• Alveoli – Air Sacs that make up the lungs, where gas exchange occurs

• Capillary – tiny blood vessels that carry materials and exchange them with the cells throughout the body

• Waste – materials not needed by the body and can be toxic if not gotten rid of

Respiratory System: Function: gas exchange, bring _______to

the blood and remove ________________ from the blood

Organs:1. Nose: _______, ______, and moistens air2. Trachea: protected by ________, contains

the vocal cords Epiglottis: covers trachea when

swallowing food3. Bronchi: two branches that lead to the

_______

Oxygen

Carbon Dioxide

Filters Warms

Cartilage

Lungs

Respiratory System:

4. Lungs: made up of ______ where gas exchange occurs ( oxygen

_______ and carbon dioxide _________ the blood)

5. Diaphragm: muscle that controls _______________

Alveoli

Enters Leaves

Breathing

Diagrams:Diagrams:

• Respiratory and Circulatory systems work together by the blood bringing carbon dioxide to the lungs to be exhaled, and the lungs taking in oxygen and giving it to the blood to be transported throughout the body.

Emphysema: a disease that reduces the number and elasticity of ___________Alveoli

Nonsmoker Smoker

Excretory System:Function: remove ____________

Organs:1. Lungs: removes ____________ 2. Large Intestine: removes

_______waste from the digestive system

3. Skin: removes ________ and heat4. Liver: removes excess _________

acids and worn out _____5. Kidneys: produce urine to remove

________, salts and nitrogen wastes

Waste

Carbon Dioxide

Solid

WaterAmino

RBC (Red Blood Cells)

Water

Lungs are a respiratory organ because they take in oxygen and an excretory organ because they get rid of carbon dioxide

• Human Kidney

Diagrams:

LungsLarge Intestine

Skin

Liver

Kidney

Gets rid of CO2 (Gas) Gets rid of Solid Waste

Gets rid of Water and Heat

Gets rid of Amino Acids and RBCs

Gets rid of Urine (Liquid Waste)

Brings blood to the kidneys

Filters/Cleans Blood

Muscular Sac that stores Urine

Brings filtered blood back to the heart

Transports Urine (Liquid Waste) produced by the kidneys to the bladderUrethra

Eliminates Urine from the body

Describe the exchange that occurs with the circulatory system and the body cells.

What would happen if your excretory system didn’t work and why?

The circulatory system delivers and gives the body cells oxygen and nutrients as it takes away carbon dioxide and other wastes and delivers them to the excretory organs

Your cells would start to die because waste is toxic

Review - Electricity

• Electricity is due to moving charges

• Like charges repel (two positives or two negatives)

• Opposite charges attract (Positive and negative)

• Electricity can travel through conductors (metals)

• Electricity can not travel through insulators (plastic, rubber, glass)