Question 1

Which nerve of the cervical plexus is primarily responsible for motor control of the diaphragm, and what are its nerve roots?

Accepted Answer

Phrenic nerve; C3-C5

Question 2

A patient presents with loss of sensation in the lateral forearm and weakness in elbow flexion. Which nerve of the brachial plexus is most likely affected?

Accepted Answer

Musculocutaneous nerve

Question 3

Which nerve of the lumbar plexus innervates the anterior thigh muscles and is responsible for knee extension?

Accepted Answer

Femoral nerve

Question 4

The sciatic nerve is the largest nerve in the body. Which structures does it innervate?

Accepted Answer

Sensory to the skin of the posterior thigh and motor to the hamstring muscles

Question 5

Which structure in the skeletal muscle fiber model is responsible for storing and releasing calcium ions during muscle contraction?

Accepted Answer

Sarcoplasmic reticulum

Question 6

In the sarcomere diagram, which band contains only thin filaments and shortens during muscle contraction?

Accepted Answer

I band

Question 7

Which equation best represents the relationship between force generated by a muscle and the cross-sectional area of its fibers?

Accepted Answer

$$F = k \cdot A$$

Question 8

During isotonic contraction, which of the following statements is true?

Accepted Answer

Muscle length changes while tension remains constant

Question 9

Which cranial nerve is responsible for both facial expression and taste sensation from the anterior two-thirds of the tongue?

Accepted Answer

Facial nerve (VII)

Question 10

A lesion in the optic nerve would most likely result in which deficit?

Accepted Answer

Loss of vision

Question 11

Which muscle is primarily responsible for flexion of the forearm at the elbow?

Accepted Answer

Biceps brachii

Question 12

Which structure in the ear transmits vibrations from the tympanic membrane to the oval window?

Accepted Answer

Ossicles (malleus, incus, stapes)

Question 13

Which muscle is involved in chewing and elevates the mandible?

Accepted Answer

Masseter

Question 14

Which nerve root combination forms the median nerve in the brachial plexus?

Accepted Answer

C6-T1

Question 15

Which muscle is responsible for abduction of the arm at the shoulder joint?

Accepted Answer

Deltoid

Question 16

Which structure in the sarcomere is the site of attachment for thin filaments?

Accepted Answer

Z disc

Question 17

Which muscle type is striated and voluntary?

Accepted Answer

Skeletal muscle

Question 18

Which nerve of the sacral plexus is responsible for motor innervation to the gluteus maximus muscle?

Accepted Answer

Inferior gluteal nerve

Question 19

Which structure in the skeletal muscle fiber model is a specialized invagination of the sarcolemma that helps transmit action potentials into the cell?

Accepted Answer

T-tubule

Question 20

Which equation describes the relationship between muscle contraction velocity ($$v$$), load ($$L$$), and maximum contraction velocity ($$v_{max}) $$according to Hill's equation?

Accepted Answer

$$(v + b)(L + a) = a v_{max}$$

Peripheral Nervous System, Special Senses, and Muscle Tissue: Study Guide for ANP College Students

Study Guide - Practice Questions

Study Guide - Flashcards