When you are exposed to bright light, a reflex is initiated and your iris constricts to decrease pupil size. Which structure serves as a receptor in this system?
A. The iris
B. The brain's visual cortex
C. The retina
D. The eyelid
Answer: C
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What is the function of the inferior colliculi?
A. Control of pain awareness B. Visual tracking of moving objects C. Auditory reflexes, such as a startle response to a loud noise D. Regulation of rate and force of the heartbeat E. Improvement of motor function by suppression of unwanted contractions
Select all that are true when a muscle fiber is at rest.A) There is a charge difference across the sarcolemma.B) Sodium-potassium pumps are active.C) Calcium is stored in the sarcoplasm.D) ACh receptors are open.
What will be an ideal response?
Which of the following is considered part of the axial skeleton?
a. Femur b. Hyoid bone c. Phalange d. Tibia
During the postabsorptive state, ________ stimulate(s) lipid catabolism
A) glucocorticoids B) androgens C) insulin D) glucagon E) gastrin