1. The sciatic nerve
​a. is the largest nerve in the body
​b. is a peripheral nerve
​c. is a spinal nerve
​d. a and b
​e. all of the above
2. The inner ear is the
​a. labyrinth
​b. cochlea
​c. tympanic cavity
​d. pinna
​e. endolymph
3. The right and left cerebral hemispheres are connected bythe
​a. corpus callosum
​b. median aperture
​c. medial mass
​d. gray commissure
​e. nothing; they are separate structures
4. The master controller of the endocrine system is the
​a. pituitary gland
​b. thyroid gland
​c. hypothalamus
​d. thalamus
​e. pancreas
5. Preganglionic sympathetic axons run from the T1_L2 spinalnerves to the sympathetic trunk via
​a. white rami communicans
​b. grey rami communicans
​c. superior cervical ganglia
​d. splanchnic nerves
​e. celiac ganglion
6. The inner ear includes the
​a. auricle and external acoustic meatus
​b. stapes, incus, and malleus
​c. cochlea, and is within the petrous part of temporalbone
​d. tympanic membrane
​e. Eustachion tube
7. The ascending tract of the spinal cord that is the primaryconveyor of sensory information after burning a hand is
​a. fasciculus gracilis
​b. corticobulbar tract
​c. lateral spinothalamic tract
​d. pyramidal tract
​e. posterior spinocerebellar tract
8. Venous blood from the heart wall enters the right atriumthrough the
​a. inferior vena cava
​b. superior vena cava
​c. pulmonary vein
​d. coronary sinus
​e. pulmonary artery
9. The region of the retina with the highest proportion ofcones and almost no rods is the
​a. optic disc
​b. macula lutea
​c. fovea centralis
​d. amacrine cell layer
​e. pigment epithelium
10. Blood return to the heart is powered by
​a. massaging action of skeletal muscle in the general area ofveins
​b. negative pressure in the thoracic cavity
​c. heart pumping
​d. a and b
​e. all of the above
​
11. The middle layer of the adrenal cortex that synthesizesglucocorticoids is the
​a. zona fasciculata
​b. zona reticularis
​c. zona glomerulosa
​d. zona corticosa
​e. zona medullaris
12. The inferior rectus muscle of the eye
​a. moves eyes laterally and is innervated by cranial nerve VI(abducens)
​b. moves eyes medially and is innervated by cranial nerve III(oculomotor)
​c. depresses eye and is innervated by cranial nerve III(oculomotor)
​d. elevates eye and is innervated by cranial nerve III(oculomotor)
​e. rotates eye and is innervated by cranial nerve VI(abducens)
13. In all cases
​a. arteries carry blood away from the heart; veins carryblood towards the heart
​b. veins carry blood away from the heart; arteries carryblood towards the heart
​c. arteries carry oxygenated blood; veins carry deoxygenatedblood
​d. arteries carry deoxygenated blood; veins carry oxygenatedblood
​e. no such generalization can be made for all cases
14. The valve between the right ventricle and the pulmonarytrunk is the
​a. pulmonary semilunar valve
​b. bicuspid valve
​c. left atrioventricular valve
​d. mitral valve
​e. aortic semilunar valve
15. When blood glucose levels are elevated, insulin issecreted by (be as specific as possible)
​a. pancreatic acini
​b. pancreatic islets
​c. alpha cells
​d. beta cells
​e. delta cells
