Zool 2200: Human Physiology
Answer each of the following questions by filling in the circle on
your answer key that corresponds with the BEST answer.
(49 points total).
A drug binds to and activates a receptor to elicit the same response as the physiologic
ligand. This drug is:
a competitive inhibitor
an endogenous ligand
2.) The parts of a reflex path are:
1.) efferent pathway.
2.) afferent pathway.
6.) integrating center.
The correct order for these parts in a physiologic response loop is:
a.) 3, 4, 2, 6, 1, 5.
b.) 3, 2, 4, 1, 6, 5.
c.) 3, 1, 4, 6, 2, 5.
d.) 3, 1, 6, 2, 4, 5.
e.) 3, 2, 6, 1, 4, 5.
Which of the following best exemplifies tonic control?
The volume knob on a car radio
A thermostat in a fish tank
Regulation of blood vessel diameter
a. and b.
a. and c.
a., b., and c. are all examples of tonic control.
None of the above.
When describing a positive feedback loop, it would be appropriate to say that
a.) it is more common than negative feedback.
b.) it requires an outside stimulus to turn it off.
c.) it is associated with neuronal conduction.
d.) a. and b.
e.) a., b., and c.