Q: Which equation best represents the relationship between bone mass and mechanical stress, assuming bone mass increases proportionally with applied stress?

$$\text{Bone Mass} = k \times \text{Mechanical Stress}$$

Question 1

Which of the following best describes the function of tight junctions in epithelial tissue?

Accepted Answer

They seal cells together, preventing substances from passing between them.

Question 2

A patient suffers a deep cut that damages both the epidermis and dermis. Which process is most likely to occur during healing?

Accepted Answer

Fibrosis, resulting in scar tissue formation in the dermis.

Question 3

Which cell is primarily responsible for producing the fibers and ground substance in connective tissue?

Accepted Answer

Fibroblast

Question 4

A hormone is released directly into the bloodstream by a gland. Which type of gland is responsible for this secretion?

Accepted Answer

Endocrine gland

Question 5

Which layer of the epidermis is only present in thick skin, such as the palms and soles?

Accepted Answer

Stratum Lucidum

Question 6

During bone fracture repair, which stage immediately follows the formation of the fracture hematoma?

Accepted Answer

Soft (fibrocartilaginous) callus formation

Question 7

Which of the following best explains why epithelial tissue regenerates rapidly?

Accepted Answer

It is constantly exposed to friction, chemicals, and pathogens, requiring frequent replacement.

Question 8

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

Accepted Answer

Osteoclast

Question 9

A decrease in blood calcium levels triggers the release of parathyroid hormone (PTH). What effect does PTH have on blood calcium?

Accepted Answer

PTH raises blood calcium by stimulating osteoclast activity.

Question 10

Which of the following is a structural unit of compact bone, containing a central canal, concentric lamellae, lacunae, and canaliculi?

Accepted Answer

Osteon

Question 11

A synovial joint is characterized by which of the following features?

Accepted Answer

Presence of a joint cavity, articular cartilage, and synovial fluid

Question 12

Which equation best represents the relationship between bone mass and mechanical stress, assuming bone mass increases proportionally with applied stress?

Accepted Answer

$$	ext{Bone Mass} = k 	imes 	ext{Mechanical Stress}$$

Question 13

Which of the following accurately distinguishes a ligament from a tendon?

Accepted Answer

A ligament connects bone to bone, while a tendon connects muscle to bone.

Question 14

Which of the following is true regarding the basement membrane of epithelial tissue?

Accepted Answer

It separates the epithelium from underlying connective tissue and provides support.

Question 15

A patient receives a subcutaneous injection. Which layer of the skin is targeted, and what is its primary tissue type?

Accepted Answer

Hypodermis; adipose connective tissue

Question 16

Which of the following best describes the function of melanocytes in the epidermis?

Accepted Answer

They produce melanin, which protects DNA from UV radiation.

Question 17

Which type of cartilage joint uses fibrocartilage and is found at the pubic symphysis?

Accepted Answer

Symphysis

Question 18

Which equation best represents the effect of calcitonin on blood calcium levels?

Accepted Answer

$$	ext{Blood Ca$$^{2+}$$}_{	ext{after}} = 	ext{Blood Ca$$^{2+}$$}_{	ext{before}} - \Delta Ca$$^{2+}$$

Question 19

Which of the following synovial joint types allows the greatest range of motion?

Accepted Answer

Ball-and-socket joint

Anatomy & Physiology I: Histology, Integumentary System, Bones, and Articulations – Mini-Textbook Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard