Question 1

Which layer of the skin is primarily responsible for providing strength and elasticity due to its high content of collagen and elastin fibers?

Accepted Answer

Dermis

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 most immediate threat to life?

Accepted Answer

Third-degree burn; dehydration

Question 3

Which of the following correctly matches the skin pigment with its source and effect on skin color?

Accepted Answer

Hemoglobin; found in red blood cells; gives pinkish hue

Question 4

Which type of sweat gland is most responsible for body odor and becomes active during puberty?

Accepted Answer

Apocrine gland

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 arises from the stratum basale and is the most common type.

Question 6

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

Accepted Answer

Regulation of body temperature

Question 7

Which bone cell is responsible for bone resorption and contains lysosomal enzymes to break down bone matrix?

Accepted Answer

Osteoclast

Question 8

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

Accepted Answer

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

Question 9

A patient with osteoporosis is prescribed a medication that inhibits osteoclast activity. What effect will this have on bone remodeling?

Accepted Answer

Decrease bone resorption and increase bone density

Question 10

Which hormone is released in response to low blood calcium levels and stimulates osteoclasts to increase blood calcium?

Accepted Answer

Parathyroid hormone (PTH)

Question 11

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

Accepted Answer

Epiphysis

Question 12

A fracture that occurs due to excessive twisting forces applied to a bone is classified as which type?

Accepted Answer

Spiral fracture

Question 13

Which of the following best describes the function of synovial fluid in a synovial joint?

Accepted Answer

Provides nutrients to articular cartilage and reduces friction

Question 14

Which of the following is TRUE regarding cartilage growth in the skeletal system?

Accepted Answer

Appositional growth increases cartilage thickness from the outside

Question 15

A patient has a skin wound that penetrates the epidermis and dermis but not the hypodermis. Which layers are affected?

Accepted Answer

Epidermis and dermis

Question 16

Which of the following equations correctly represents the relationship between bone stress ($$\sigma$$), force ($$F$$), and cross-sectional area ($$A$$)?

Accepted Answer

$$\sigma = \frac{F}{A}$$

Question 17

Which of the following is a homeostatic imbalance of the integumentary system characterized by rapid cell division and scaling of the skin?

Accepted Answer

Psoriasis

Question 18

Which of the following best describes the function of sebaceous glands?

Accepted Answer

Produce sebum to lubricate and waterproof the skin

Question 19

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

Accepted Answer

Production of hormones

Question 20

A patient presents with a yellowish skin tone. Which pigment is most likely responsible for this coloration?

Accepted Answer

Carotene

Integumentary System, Skeletal System, and Joints: Study Guide

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