Question 1

Which type of cell junction is primarily responsible for creating a watertight seal between adjacent epithelial cells, and in which organ system is this especially important?

Accepted Answer

Tight junction; urinary system

Question 2

A biopsy is performed to diagnose a suspicious lesion. Which of the following best describes the process and its clinical significance?

Accepted Answer

Removal of living tissue for microscopic examination; useful for cancer diagnosis

Question 3

Which of the following best describes the difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands secrete hormones into the bloodstream; exocrine glands secrete products onto epithelial surfaces via ducts

Question 4

A patient with diabetes mellitus develops thickening of the basement membrane in the kidney. Which component is most likely increased in this scenario?

Accepted Answer

Collagen and laminin

Question 5

Which of the following connective tissue fibers provides the greatest tensile strength and is most abundant in tendons?

Accepted Answer

Collagen fibers

Question 6

Which type of epithelial tissue is best adapted for rapid diffusion and filtration, and where is it commonly found?

Accepted Answer

Simple squamous epithelium; alveoli of lungs

Question 7

A gland that releases its secretory product by the entire cell rupturing and dying is classified as which type of gland?

Accepted Answer

Holocrine

Question 8

Which of the following best explains why cartilage heals slowly after injury?

Accepted Answer

Cartilage is avascular and lacks nerves

Question 9

Which of the following is a function of adipose tissue?

Accepted Answer

Storing energy as triglycerides and providing insulation

Question 10

A patient presents with a wound that heals by fibrosis, resulting in scar tissue. Which process is primarily responsible for this outcome?

Accepted Answer

Formation of granulation tissue and collagen deposition

Question 11

Which of the following best describes the structure and function of gap junctions?

Accepted Answer

They allow ions and small molecules to pass directly between adjacent cells

Question 12

Which type of muscle tissue is striated, involuntary, and contains intercalated discs?

Accepted Answer

Cardiac muscle

Question 13

Which of the following best describes the main function of reticular connective tissue?

Accepted Answer

Forms a supportive framework for organs such as the spleen and lymph nodes

Question 14

A patient with a genetic defect in fibrillin would most likely have problems with which connective tissue fiber, and what clinical sign might be observed?

Accepted Answer

Elastic fibers; hyperextensible skin and blood vessel abnormalities

Question 15

Which of the following best explains why stratified squamous epithelium is found in areas subject to abrasion, such as the skin and oral cavity?

Accepted Answer

It provides a thick, protective barrier due to multiple cell layers

Question 16

Which of the following is a key difference between mucous and serous membranes?

Accepted Answer

Mucous membranes line cavities that open to the exterior; serous membranes line cavities that do not open to the exterior

Question 17

Which of the following best describes the role of vitamin C in tissue repair?

Accepted Answer

It is required for the synthesis of collagen fibers

Question 18

Which of the following cell types is responsible for producing antibodies in connective tissue?

Accepted Answer

Plasma cells

Question 19

A patient with a mutation that impairs the function of connexons would most likely have defects in which physiological process?

Accepted Answer

Transmission of electrical impulses in cardiac muscle

Question 20

Which of the following best describes the difference between dense regular and dense irregular connective tissue?

Accepted Answer

Dense regular connective tissue has collagen fibers arranged in parallel bundles; dense irregular connective tissue has collagen fibers arranged in multiple directions

Histology: The Tissue Level of Organization

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