Match the type of signal to its description (answers may be used more than once).
1. may be hyperpolarizing
2. originate(s) at the trigger zone
3. originate(s) on dendrites and cell bodies
4. can involve ion channels regulated by chemicals
5. require(s) a minimum stimulus to occur
6. size increases if stimulus strength increases
7. result(s) from influx of sodium
A. graded potential
B. action potential
C. both
1. A. graded potential
2. B. action potential
3. A. graded potential
4. A. graded potential
5. B. action potential
6. A. graded potential
7. C. both
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You are studying for your physiology test with your lab partner. She insists that the purpose of the knee jerk reflex is to test for neural or muscular damage. State whether or not you agree with her, and why.
What will be an ideal response?
The enzyme ATPase occurs in the globular portion of myosin molecules
Indicate whether the statement is true or false
The inferior rectus muscle is located inferior to the eye and rotates the eye down. This muscle would be controlled by the:
a. trochlear nerve b. abducens nerve c. oculomotor nerve d. opthalmic nerve
What arteries supply the head?
A. Right and left axillary arteries B. Right and left coronary arteries C. Right and left carotid arteries D. Right and left subclavian arteries