Q: Which of the following equations best represents the relationship between the number of cell layers ($$n) $$and the type of epithelial tissue?

$$n = 1$$ \rightarrow \text{Simple epithelium}$

Question 1

Which of the following best describes the primary function of simple squamous epithelium in the alveoli of the lungs?

Accepted Answer

Rapid diffusion of gases

Question 2

A tissue sample from the lining of the urinary bladder shows cells that appear cuboidal when relaxed and squamous when stretched. What type of epithelium is this?

Accepted Answer

Transitional epithelium

Question 3

Which embryonic germ layer gives rise to the epithelial lining of the digestive and respiratory tracts?

Accepted Answer

Endoderm

Question 4

Gap junctions are especially important in which of the following tissues for allowing the passage of ions and electrical impulses?

Accepted Answer

Cardiac muscle tissue

Question 5

A gland that releases its secretions by exocytosis without losing any part of the cell is classified as which type of exocrine gland?

Accepted Answer

Merocrine

Question 6

Which of the following best explains why epithelial tissues are able to regenerate rapidly after injury?

Accepted Answer

They are supported by a basement membrane and have a high mitotic rate

Question 7

A patient has a genetic defect affecting the proteins that form desmosomes. Which symptom would most likely be observed?

Accepted Answer

Loss of adhesion between skin cells, leading to blistering

Question 8

Which of the following statements about endocrine glands is correct?

Accepted Answer

They release hormones directly into the bloodstream

Question 9

Which type of epithelial tissue is best adapted for absorption and secretion, and is found lining the kidney tubules?

Accepted Answer

Simple cuboidal epithelium

Question 10

A multicellular exocrine gland with a branched duct and rounded secretory portions is classified as which of the following?

Accepted Answer

Compound alveolar (acinar) gland

Question 11

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

Accepted Answer

Prevent leakage of substances between cells

Question 12

A biopsy of a gland shows cells accumulating secretory product in the cytosol until the cell ruptures. Which type of secretion is this?

Accepted Answer

Holocrine

Question 13

Which of the following is a key difference between exocrine and endocrine glands?

Accepted Answer

Exocrine glands have ducts, endocrine glands are ductless

Question 14

Which of the following best describes the role of the basement membrane in epithelial tissue?

Accepted Answer

It anchors epithelial cells to underlying connective tissue

Question 15

A patient with a mutation affecting gap junction proteins would most likely experience which of the following problems?

Accepted Answer

Impaired communication between cardiac muscle cells

Question 16

Which of the following equations best represents the relationship between the number of cell layers ($$n) $$and the type of epithelial tissue?

Accepted Answer

$$n = 1$$ ightarrow 	ext{Simple epithelium}$

Question 17

Which of the following is a real-life example of the importance of keratinized stratified squamous epithelium?

Accepted Answer

It forms the outer layer of skin, providing protection against abrasion and dehydration

Question 18

Which of the following best explains why pseudostratified columnar epithelium appears to have multiple layers?

Accepted Answer

Cell nuclei are at different levels, but all cells rest on the basement membrane

Question 19

A researcher is studying the movement of large molecules across the basement membrane in the kidney. Which property of the basement membrane is most relevant to this process?

Accepted Answer

Its role as a selective barrier for filtration

Question 20

Which of the following best describes the function of microvilli on the apical surface of epithelial cells in the small intestine?

Accepted Answer

To increase surface area for absorption

Tissue Level of Organization: Structure, Function, and Classification of Human Tissues

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