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Final Exam Review. POWERPOINT JEOPARDY. Nervous System. Senses. Endocrine System. Blood. Circulatory System. 10. 10. 10. 10. 10. 20. 20. 20. 20. 20. 30. 30. 30. 30. 30. 40. 40. 40. 40. 40. 50. 50. 50. 50. 50. What is the function of neuroglial cells? - PowerPoint PPT Presentation
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What is the function of neuroglial cells?
Protection and support of the neurons
What is the function of the dendrite?
Transmit impulses to the cell body
What is the all or nothing principle?
An AP is triggered when a threshold stimulus is
applied
What two factors determine the rate of an
action potential?
Diameter of axon and myelination
List the two main structures found in the
CNS.
Brain and spinal cord
What is the name of the photopigment found in
the rods?
Rhodopsin
What is the function of the lens?
Refracts light to be focused on retina
What happens to the ciliary muscles and lens
when you look at a distant object?
Muscles relax, lens is elongated
What is the area of the retina that does not
produce an image called?
Optic disc (blind spot)
Describe two symptoms of glaucoma.
Loss of peripheral vision, intraocular pressure exceeding 25 mmHg
What are the endocrine cells in the pancreas
called?
Islets of Langerhans
Which of the following is not an example of an
endocrine gland? (Sweat, adrenal,
parathyroid, pituitary or pineal gland)
Sweat gland
What two hormones are responsible for regulating
blood calcium levels?
Parathyroid hormone and calcitonin
What hormone is typically regulated by
positive feedback?
Oxytocin
What two hormones are involved in the fight or
flight response?
Epinephrine and norepinephrine
If a mother and her fetus have an incompatible Rh
factor, what disorder would result?
Erythroblastosis fetalis
Define hemocrit.
Measure of percent of volume of whole blood that is made up of RBC
Define hemopoiesis.
Blood cell formation
What prevents blood loss in a damaged vessel?
Hemostasis (platelet plug formation, vascular spasm, coagulation)
Describe antigens, antibodies and Rh factor
found in A- and B+ individuals
A- carries A antigens; anti-B antibodies and no
RhB+ carries B antigens;
anti-A antibodies and Rh
What surrounds the heart? What is its
function?
Pericardium; protects heart from overextension
What is the function of the atrio-ventricular (AV)
valves?
Prevent backflow of blood from ventricles to atrium
What is the pacemaker of the heart?
SA node (sinoatrial node)
How are veins and arteries different
structurally?
Veins have valves
What is the function of capillaries?
Exchange of gases and nutrients between cells
and blood