Q: Which of the following equations correctly represents the mechanical advantage (MA) of a lever in the human body?

$$MA = \frac{\text{effort arm}}{\text{resistance arm}}$$

Question 1

Which of the following is NOT a primary function of the skin?

Accepted Answer

Production of red blood cells

Question 2

A patient presents with a burn that destroys the epidermis and the entire dermis, resulting in a painless, charred area. Which degree of burn is this, and what is a major complication associated with it?

Accepted Answer

Third-degree burn; risk of fluid loss and infection

Question 3

Which layer of the epidermis is responsible for generating new keratinocytes?

Accepted Answer

Stratum basale

Question 4

Which of the following glands is responsible for producing a watery secretion that helps regulate body temperature, and where are these glands most abundant?

Accepted Answer

Eccrine sweat glands; palms and soles

Question 5

A patient has a pale, bluish skin coloration (cyanosis). Which of the following best explains this abnormal skin color?

Accepted Answer

Decreased oxygenation of hemoglobin

Question 6

Which of the following best describes the arrangement of bone tissue in an osteon?

Accepted Answer

Concentric lamellae surrounding a central canal

Question 7

During endochondral ossification, what tissue is replaced by bone, and where does the primary ossification center form?

Accepted Answer

Hyaline cartilage; diaphysis

Question 8

Which hormone increases blood calcium levels by stimulating osteoclast activity, and what is the effect on bone tissue?

Accepted Answer

Parathyroid hormone (PTH); increases bone resorption

Question 9

A 70-year-old woman suffers a hip fracture after a minor fall. Her bone density is significantly reduced. Which condition is most likely responsible, and who is most susceptible to it?

Accepted Answer

Osteoporosis; postmenopausal women

Question 10

Which of the following best describes interstitial growth of bone, and where does it occur?

Accepted Answer

Growth in bone length; epiphyseal plate

Question 11

Which of the following is a structural classification of joints that allows the greatest range of motion?

Accepted Answer

Synovial joint

Question 12

A patient is unable to extend their knee after an injury. Which structure is most likely damaged?

Accepted Answer

Anterior cruciate ligament (ACL)

Question 13

Which movement describes turning the palm from facing upward to facing downward?

Accepted Answer

Pronation

Question 14

Which of the following best describes the difference between osteoarthritis and rheumatoid arthritis?

Accepted Answer

Osteoarthritis is due to cartilage degeneration; rheumatoid arthritis is an autoimmune disorder

Question 15

Which of the following equations correctly represents the mechanical advantage (MA) of a lever in the human body?

Accepted Answer

$$MA = \frac{	ext{effort arm}}{	ext{resistance arm}}$$

Question 16

Which of the following best describes the function of osteoblasts?

Accepted Answer

Produce new bone matrix and promote mineralization

Question 17

Which type of bone forms primarily through intramembranous ossification?

Accepted Answer

Flat bones of the skull

Question 18

Which of the following best describes the role of the metaphysis in bone growth?

Accepted Answer

It contains the epiphyseal plate where interstitial growth occurs

Question 19

Which of the following is the correct sequence of events in the healing of a fractured bone?

Accepted Answer

Hematoma formation → fibrocartilaginous callus → bony callus → bone remodeling

Question 20

Which of the following best explains why spongy bone is more prevalent at the ends of long bones?

Accepted Answer

It is lighter and can withstand forces from multiple directions

Integumentary System, Bone Tissue, and Articulations: Study Guide for Anatomy & Physiology

Guida di studio - Domande di pratica

Study guide - Flashcard