Anatomy 7

58. Anesthesia of the maxillary premolar teeth can

be effected by infiltrating the nerve as it leaves

the:

A. Foramen rotundum

B. Greater palatine foramen

C. Incisive canal

D. Infraorbital foramen

E. Lesser palatine foramen

59.The  striated or brush border is composed of:

A. Tightly packed cilia

B. Microvilli

C. Tightly packed filaments

D. Dendrites

E. Tonofibrils

60. A patient is diagnosed a~ having intestinal angina

(thrombotic occlusion of the superior mesenteric

artery near its origin). If significant collateral

circulation is not present or fails to develop, all

the following parts of the intestinal tract may

become gangrenous except the:

A. Ascending colon

"'-

B. Appendix

C. Descending colon

D. Ileum

E. Transverse colon

61. A physician examines a patient who complains

of pain and paresthesia in the left leg. The

distribution of the pain-running down to the

medial aspect of the leg and medial side of the

foot and including the great toe-is suggestive

of a herniated intervertebral disc. The physician

links the distribution of symptoms with nerve

L4 and concludes that herniation has occurred

at which location?

A. L3-L4 intervertebral disc

B. L4-L5 intervertebral disc

C. L5-S I intervertebral disc

D. S 1-82 intervertebral disc

E. Insufficient data to determine

62. An injury to the median nerve in the middle third

of the arm would affed which of the following

muscles?

A. Flexor carpi ulnaris

B. Adductor pollicis

C. Abductor digiti mininii

D. Abductor pollicis brevia

E. Extensor carpi radialis longus

63. Compression of the median nerve in the carpal

tunnel deep to the flexor retinaculum could affect

the functioning of each of the following muscles

except the:

A. Second lumbrical

B. Opponens pollicis

C. Flexor pollicis brevis

D. Abductor pollicis brevis

E. Flexor carpi radialis

64. A neurosurgeon wishing to eliminate pain in a

particular dermatome without causing loss of the

sense of touch would make a cut at which one of

the following sites?

A. Where the lateral fibers of the dorsal root attach

to the cord

B. In the mid portion of the root as it crosses the

subarachnoid space

C. Just after the dorsal root enters the subarachnoid

space from the intervertebral foramen

D. Just at the distal edge of the dorsal root ganglion

E. In the nerve trunk about I cm distal to the

ganglion

65. Recognition of a coin felt in your pocket, but not

seen, depends on the:

A. Dorsal column pathway

B. Spinocerebellar tract

C. Spinoreticular tracts

D. Ground bundles

E. None of the above

66. All of the following organelles incorporate a unit

membrane except:

A. Ribosome

B. Rough endoplasmic reticulum

C. Lysosome

D. Nuclear envelope

E. Golgi apparatus

67. Which of the following statements is true of

cardiac development?

A. During formation of the heart loop, a single-tube

heart remains suspended by a complete dorsal

mesocardium (mesentery)

B. The atria are represented by cranial portions of

the endocardial tubes

C. The heart bends into an S-shape because the

caudal regions of the endocardial tubes grow

faster than the cranial regions

.

D. The left and right sides of the heart result directly

from the side-by-side apposition of the left and

right endocardial tubes

E. The sinus venosus becomes incorporated into

the atrium prior to the formation of the heart

loop