Q: Which of the following equations correctly 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 two basic components shared by all tissues in the human body?

Accepted Answer

A population of cells and an extracellular matrix (ECM)

Question 2

Which type of tissue is characterized by sheets of cells with little visible ECM, covering all body surfaces and cavities, and forming glands that secrete products?

Accepted Answer

Epithelial tissue

Question 3

Which of the following is NOT a function of epithelial tissue?

Accepted Answer

Contraction

Question 4

Which cell junction type acts like a zipper, making cells impermeable to most substances and is found in the intestinal epithelium?

Accepted Answer

Tight junction

Question 5

A researcher is studying a tissue sample with cells that are flat and arranged in a single layer, allowing rapid diffusion of gases. Where is this tissue most likely found?

Accepted Answer

Air sacs of lungs

Question 6

Which of the following best describes the function of glycosaminoglycans (GAGs) in the extracellular matrix?

Accepted Answer

They attract positively charged ions and draw water out of cells and blood vessels

Question 7

Which type of epithelial tissue is most effective as a protective barrier due to its multiple layers and keratinized apical cells?

Accepted Answer

Keratinized stratified squamous epithelium

Question 8

Which of the following is TRUE regarding endocrine glands?

Accepted Answer

They secrete hormones directly into the bloodstream

Question 9

A patient has a genetic defect affecting the protein elastin. Which ECM component and tissue property would be most affected?

Accepted Answer

Elastic fibers; ability to stretch and return to original length

Question 10

Which of the following best explains the difference between merocrine and holocrine secretion in exocrine glands?

Accepted Answer

Merocrine glands release products by exocytosis, while holocrine glands release products when the cell ruptures

Question 11

Which of the following equations correctly 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 12

Which specialized epithelial tissue appears to be stratified due to nuclei at different heights but is actually a single layer?

Accepted Answer

Pseudostratified columnar epithelium

Question 13

A tissue sample from the urinary bladder shows cells that change shape from cuboidal to squamous when stretched. What type of epithelium is this?

Accepted Answer

Transitional epithelium

Question 14

Which of the following cell junctions allows small substances to pass directly between the cytosol of two adjacent cells?

Accepted Answer

Gap junction

Question 15

Which of the following is a correct description of the basal lamina in epithelial tissue?

Accepted Answer

It is synthesized by epithelial cells and contains collagen fibers and ground substance

Question 16

Which of the following is the most common unicellular gland found in the digestive and respiratory tracts, and what does it secrete?

Accepted Answer

Goblet cell; mucus

Question 17

A multicellular exocrine gland with both tubular and acinar secretory portions is classified as which type?

Accepted Answer

Tubuloacinar gland

Question 18

Which of the following best describes the function of proteoglycans in the ECM?

Accepted Answer

They make tissues more solid and resistant to compression

Question 19

Which equation best represents the relationship between the number of cell layers ($n$) and the effectiveness of epithelial tissue as a protective barrier?

Accepted Answer

$	ext{Protection} \propto n$

Question 20

Which of the following is a real-life example of transcellular transport in epithelial tissue?

Accepted Answer

Glucose absorption from the intestinal lumen into the blood

Epithelial Tissue: Structure, Function, and Classification

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