Question 1

Which of the following statements best explains why cells must be surrounded by appropriate extracellular materials to perform their functions effectively?

Accepted Answer

Extracellular materials supply structural and biochemical support, influencing cell placement, communication, and function.

Question 2

A patient with Marfan syndrome has a defect in the gene coding for fibrillin-1. Which of the following consequences is most directly related to this defect?

Accepted Answer

Impaired distribution and anchoring of elastic fibers in the extracellular matrix.

Question 3

Which tissue type is characterized by tightly packed cells with little extracellular matrix, forming protective barriers and lining body cavities?

Accepted Answer

Epithelial tissue

Question 4

Which of the following cell junctions is most important for preventing the passage of materials between adjacent epithelial cells in the small intestine?

Accepted Answer

Tight junctions

Question 5

A histology slide shows a tissue with cells arranged in a single layer of tall, rectangular cells with nuclei at the basal portion. Which type of epithelium is this most likely to be?

Accepted Answer

Simple columnar epithelium

Question 6

Which function is primarily associated with muscle tissue?

Accepted Answer

Contraction and movement

Question 7

Which of the following best describes the role of collagen fibers in the extracellular matrix (ECM)?

Accepted Answer

Collagen fibers provide tensile strength and resistance to tension and pressure.

Question 8

Which equation correctly represents the relationship between the number of cell types ($$N) $$and the number of specialized functions ($$F) in $$the human body, given that each cell type can perform multiple functions?

Accepted Answer

$$N \u003c F$$

Question 9

A tissue sample contains cells that are joined by desmosomes and are subject to mechanical stress, such as stretching. Which tissue type is most likely being observed?

Accepted Answer

Epithelial tissue (specifically skin epithelium)

Question 10

Which of the following is a function of the ground substance in the extracellular matrix (ECM)?

Accepted Answer

Regulates cell development and survival, and holds cells in position

Question 11

A researcher observes that a tissue section contains abundant ECM with protein fibers and ground substance, and cells are scattered throughout. Which tissue type is most likely present?

Accepted Answer

Connective tissue

Question 12

Which of the following best describes the function of gap junctions in cardiac muscle cells?

Accepted Answer

They allow ions and electrical signals to pass directly between adjacent cells.

Question 13

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

Accepted Answer

Contraction and force generation

Question 14

Which of the following best explains why simple squamous epithelium is found lining blood vessels and alveoli in the lungs?

Accepted Answer

It facilitates rapid diffusion of gases and nutrients due to its thin, flat cell layer.

Question 15

Which of the following is a correct statement about the basement membrane in epithelial tissues?

Accepted Answer

It consists of the basal lamina and reticular fibers, anchoring the epithelium to underlying connective tissue.

Question 16

A tissue sample from the trachea shows multiple layers of cells with varying heights, giving the appearance of stratification, but all cells touch the basement membrane. What type of epithelium is this?

Accepted Answer

Pseudostratified columnar epithelium

Question 17

Which of the following best describes the function of reticular fibers in connective tissue?

Accepted Answer

They form a meshwork that supports cells and ground substance.

Question 18

Which of the following equations best represents the relationship between tissue regeneration ($$R$$), cell replacement ($$C$$), and fibrosis ($$F) in $$tissue repair?

Accepted Answer

$$R = C + F$$

Question 19

Which of the following is a distinguishing feature of nervous tissue compared to other tissue types?

Accepted Answer

It contains specialized cells that generate, send, and receive electrical signals.

Question 20

A pathologist examines a tissue section and notes the presence of pink wavy lines and bundles, but no nuclei within these structures. What is the most likely identity of these structures?

Accepted Answer

Collagen fibers

Tissues: Structure, Function, and Classification in Human Anatomy & Physiology

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