Question 1

Which muscle is primarily responsible for elevating the mandible during mastication?

Accepted Answer

Masseter

Question 2

A patient presents with difficulty flexing their forearm at the elbow. Which muscle is most likely impaired?

Accepted Answer

Brachialis

Question 3

Damage to the phrenic nerve would most directly affect which muscle's function?

Accepted Answer

Diaphragm

Question 4

Which structure separates the frontal and parietal lobes of the cerebrum?

Accepted Answer

Central sulcus

Question 5

A lesion in the precentral gyrus would most likely result in which deficit?

Accepted Answer

Impaired voluntary motor control

Question 6

Which equation best represents the relationship between the number of spinal nerve pairs ($$N) $$and the number of vertebral regions ($$R) $$given the following: cervical (8), thoracic (12), lumbar (5), sacral (5), coccygeal (1)?

Accepted Answer

$$N = 8 + 12 + 5 + 5 + 1$$

Question 7

Which muscle is involved in abduction of the arm at the shoulder joint?

Accepted Answer

Deltoid

Question 8

If the choroid plexus is damaged, which function is most likely impaired?

Accepted Answer

Production of cerebrospinal fluid

Question 9

A patient with injury to the sciatic nerve may experience weakness in which muscle group?

Accepted Answer

Hamstrings

Question 10

Which structure is responsible for transmitting sound vibrations from the tympanic membrane to the inner ear?

Accepted Answer

Ossicles

Question 11

Which equation describes the volume of cerebrospinal fluid ($$V_{CSF}) $$produced per hour if the choroid plexus produces $$P mL/$$min?

Accepted Answer

$$V_{CSF} = P 	imes 60$$

Question 12

Which muscle is NOT part of the quadriceps group?

Accepted Answer

Biceps femoris

Question 13

A patient has lost sensation in the lateral forearm. Which nerve is most likely damaged?

Accepted Answer

Musculocutaneous nerve

Question 14

Which structure is the site of decussation (crossing) of motor fibers in the medulla oblongata?

Accepted Answer

Pyramids

Question 15

Which equation best represents the total number of extrinsic eye muscles ($$E) $$given the following muscles: superior rectus, inferior rectus, lateral rectus, medial rectus, superior oblique, inferior oblique?

Accepted Answer

$$E = 6$$

Question 16

Which structure is responsible for the 'blind spot' in the visual field?

Accepted Answer

Optic disc

Question 17

A patient is unable to dorsiflex their foot. Which muscle is most likely affected?

Accepted Answer

Tibialis anterior

Question 18

Which equation best represents the total number of spinal nerves ($$S) if $$there are $$C$$ cervical, $$T$$ thoracic, $$L$$ lumbar, $$S_a$$ sacral, and $$C_o$$ coccygeal nerves?

Accepted Answer

$$S = C + T + L + S_a + C_o$$

Question 19

Which structure connects the two cerebral hemispheres?

Accepted Answer

Corpus callosum

Question 20

Which muscle is responsible for compressing the cheeks during chewing?

Accepted Answer

Buccinator

Comprehensive Study Guide: Muscles, Nervous System, and Special Senses

Guida di studio - Domande di pratica

Study guide - Flashcard