Question 1

Which of the following is NOT a function of the integumentary system?

Accepted Answer

Production of red blood cells

Question 2

A patient presents with a wound that penetrates through the epidermis and into the dermis. Which layer is most likely to contain blood vessels and nerves that will respond to this injury?

Accepted Answer

Dermis

Question 3

Which stratum of the epidermis contains mitotic cells responsible for regeneration?

Accepted Answer

Stratum basale

Question 4

Melanin, carotene, and hemoglobin are all pigments that affect skin color. Which pigment is primarily responsible for the yellow-orange hue seen in some individuals?

Accepted Answer

Carotene

Question 5

Which of the following best describes the function of the arrector pili muscle?

Accepted Answer

Contracts to cause hair to stand upright, producing 'goosebumps'

Question 6

Which type of sudoriferous gland is primarily involved in thermoregulation and is found throughout most of the body?

Accepted Answer

Eccrine gland

Question 7

Which bone cell is responsible for breaking down bone matrix during bone remodeling?

Accepted Answer

Osteoclast

Question 8

A long bone such as the femur contains a medullary cavity. What is the primary function of this cavity?

Accepted Answer

Stores bone marrow

Question 9

Which equation best represents the chemical composition of the major ground substance in bone?

Accepted Answer

$$Ca_3$$($$PO_4)_2$

Question 10

During endochondral ossification, which event occurs first?

Accepted Answer

Development of a primary ossification center in the diaphysis

Question 11

Which of the following bones is formed by intramembranous ossification?

Accepted Answer

Clavicle

Question 12

A patient with scoliosis has an abnormal spinal curvature. Which description best fits scoliosis?

Accepted Answer

Lateral curvature of the spine

Question 13

Which joint type allows the greatest range of motion and is found in the shoulder and hip?

Accepted Answer

Ball-and-socket joint

Question 14

Which movement term describes lifting the toes upward toward the shin?

Accepted Answer

Dorsiflexion

Question 15

Which muscle tissue is striated, involuntary, and found only in the heart?

Accepted Answer

Cardiac muscle

Question 16

Which structure stores calcium ions ($$Ca^{2+}) in $$skeletal muscle fibers?

Accepted Answer

Sarcoplasmic reticulum

Question 17

During muscle contraction, which event triggers the release of $$Ca^{2+}$$ from the sarcoplasmic reticulum?

Accepted Answer

Arrival of an action potential at the T-tubule

Question 18

If acetylcholine receptors at the neuromuscular junction are blocked, what would be the most immediate effect?

Accepted Answer

Muscle contraction would be inhibited

Question 19

A motor unit consists of:

Accepted Answer

All muscle fibers innervated by a single motor neuron

Question 20

Which muscle acts as the antagonist during elbow flexion?

Accepted Answer

Triceps brachii

ANP Exam 2 Review: Integumentary, Skeletal, and Muscular Systems – Guided Study

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