Q: Which of the following equations best represents the composition of the extracellular matrix (ECM)?

$$ECM = \text{Ground Substance} + \text{Protein Fibers}$$

Question 1

Which of the following best describes the primary function of muscle tissue in the human body?

Accepted Answer

To contract and generate movement

Question 2

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

Accepted Answer

Distribution and anchoring of elastic fibers in the extracellular matrix

Question 3

Which equation best 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 have multiple functions?

Accepted Answer

$$F \u003e N$$

Question 4

Which of the following statements about epithelial tissue is correct?

Accepted Answer

Epithelial tissue consists of tightly packed cells with little ECM

Question 5

A researcher observes a tissue section with pink wavy lines and bundles under a microscope. What is the most likely component being observed?

Accepted Answer

Collagen fibers

Question 6

Which type of cell junction is most important for preventing leakage of substances between epithelial cells in the lining of the intestine?

Accepted Answer

Tight junctions

Question 7

If a tissue is distensible but not elastic, what would happen if it were stretched?

Accepted Answer

It would stretch but not return to its original shape

Question 8

Which of the following best describes the function of the extracellular matrix (ECM) in connective tissue?

Accepted Answer

It provides tensile and compressive strength, directs cell placement, and regulates cell development and survival

Question 9

A tissue sample contains cells with elongated nuclei located at the basal portion and microvilli for absorption. Which type of epithelial tissue is this most likely to be?

Accepted Answer

Simple columnar epithelium

Question 10

Which of the following is a correct statement about connective tissue?

Accepted Answer

Connective tissue has a large amount of ECM and binds, supports, and protects other tissues

Question 11

Which of the following cell junctions allows ions and small molecules to pass directly between neighboring cells, facilitating cell-to-cell communication?

Accepted Answer

Gap junctions

Question 12

A tissue sample is observed to have cells that are flat and arranged in a single layer, facilitating rapid diffusion of gases. Which type of epithelium is this?

Accepted Answer

Simple squamous epithelium

Question 13

Which of the following best explains why collagen fibers are important in connective tissue?

Accepted Answer

They provide tensile strength and resistance to tension and pressure

Question 14

Which of the following is a function of epithelial tissue that is enhanced by the presence of keratin?

Accepted Answer

Protection against mechanical and thermal injury

Question 15

Which of the following equations best represents the composition of the extracellular matrix (ECM)?

Accepted Answer

$$ECM = 	ext{Ground Substance} + 	ext{Protein Fibers}$$

Question 16

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

Accepted Answer

Contracting to generate movement

Question 17

A tissue sample from the heart contains both muscle and connective tissue. Which statement best explains the advantage of this arrangement?

Accepted Answer

It enables the heart to contract for pumping blood while providing structural support

Question 18

Which of the following best describes the role of proteoglycans in the extracellular matrix?

Accepted Answer

They bind water and create a gel-like substance that resists compression

Question 19

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

Accepted Answer

It is composed of the basal lamina and reticular lamina, anchoring the epithelium to underlying connective tissue

Question 20

Which of the following best describes the difference between simple and stratified epithelial tissue?

Accepted Answer

Simple epithelium consists of a single layer of cells, while stratified epithelium has multiple layers

Introduction to Tissues: Structure, Function, and Classification in Anatomy & Physiology

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