Question 1

Which layer of the skin is primarily responsible for providing a waterproof barrier and contributing to skin tone?

Accepted Answer

Epidermis

Question 2

A patient presents with a burn that affects both the epidermis and the entire dermis, but not underlying tissues. According to the rule of nines, which degree of burn is this and what is the primary concern?

Accepted Answer

Third-degree burn; loss of sensation and fluid loss

Question 3

Which pigment is NOT involved in determining normal skin color?

Accepted Answer

Bilirubin

Question 4

Which of the following best describes the function of eccrine sweat glands?

Accepted Answer

Produce sweat for thermoregulation

Question 5

A patient is diagnosed with basal cell carcinoma. Which of the following statements is TRUE regarding this type of skin cancer?

Accepted Answer

It is the most common but least likely to spread

Question 6

Which bone cell is responsible for bone resorption, and what is the chemical process involved?

Accepted Answer

Osteoclast; secretion of acids and enzymes to dissolve bone minerals

Question 7

During endochondral ossification, which sequence correctly describes the process of bone growth?

Accepted Answer

Formation of bone collar, cavitation of hyaline cartilage, invasion of internal cavities by periosteal bud, formation of medullary cavity

Question 8

Which hormone is primarily responsible for increasing blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 9

A fracture that occurs due to twisting forces and results in a ragged break is best classified as:

Accepted Answer

Spiral fracture

Question 10

Which of the following equations correctly represents the chemical composition of hydroxyapatite, the main mineral in bone?

Accepted Answer

$$Ca_5$$($$PO_4)_3OH$

Question 11

Which part of a long bone contains the red bone marrow in adults and is the primary site of hematopoiesis?

Accepted Answer

Epiphysis

Question 12

Which of the following is a function of the integumentary system?

Accepted Answer

Protection against mechanical injury and pathogens

Question 13

A patient presents with yellowing of the skin and eyes. Which pigment accumulation is most likely responsible for this condition?

Accepted Answer

Bilirubin

Question 14

Which of the following best describes the difference between eccrine and apocrine sweat glands?

Accepted Answer

Eccrine glands are distributed widely and regulate temperature; apocrine glands are localized and become active at puberty

Question 15

Which of the following is NOT a function of the dermis?

Accepted Answer

Stores adipose tissue for energy

Question 16

Which of the following steps is FIRST in the repair of a bone fracture?

Accepted Answer

Formation of a hematoma

Question 17

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

Accepted Answer

Contract to cause hair to stand upright, aiding in thermoregulation

Question 18

Which of the following is the correct order of layers in the epidermis from deepest to most superficial?

Accepted Answer

Stratum basale, stratum spinosum, stratum granulosum, stratum corneum

Question 19

Which of the following is a homeostatic imbalance of the integumentary system that can be detected using the ABCD rule?

Accepted Answer

Melanoma

Question 20

Which of the following best describes the function of osteoblasts?

Accepted Answer

Build new bone matrix by secreting collagen and minerals

Integumentary System, Skeletal System, and Joints: Study Guide

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