Q: Which of the following equations best represents the relationship between the components of the extracellular matrix (ECM) in connective tissue?

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

Question 1

Which of the following best explains why cartilage injuries heal more slowly than bone injuries?

Accepted Answer

Cartilage is avascular, so it lacks a direct blood supply for nutrient delivery and waste removal.

Question 2

A patient suffers a deep cut that damages both the epidermis and the underlying connective tissue. Which process is most likely to occur during healing?

Accepted Answer

Both regeneration of epithelial tissue and fibrosis of connective tissue will occur.

Question 3

Which connective tissue fiber type is primarily responsible for providing high tensile strength to tendons?

Accepted Answer

Collagen fibers

Question 4

Which of the following equations best represents the relationship between the components of the extracellular matrix (ECM) in connective tissue?

Accepted Answer

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

Question 5

A 65-year-old patient develops a scar in the heart muscle after a myocardial infarction. Which tissue repair process is primarily responsible for this outcome?

Accepted Answer

Fibrosis, resulting in the replacement of damaged cardiac muscle with connective tissue

Question 6

Which of the following connective tissues is most likely to be found supporting the spleen and lymph nodes?

Accepted Answer

Reticular connective tissue

Question 7

Which cell type is primarily responsible for secreting the matrix in bone tissue?

Accepted Answer

Osteoblasts

Question 8

A patient with a genetic defect in elastin production would most likely have problems with which of the following?

Accepted Answer

Ability of tissues to stretch and recoil, especially in large arteries

Question 9

Which of the following best describes the function of mast cells in connective tissue?

Accepted Answer

They initiate local inflammatory responses against foreign microorganisms.

Question 10

Which of the following tissues has the greatest capacity for regeneration after injury?

Accepted Answer

Epithelial tissue

Question 11

Which of the following is a key difference between dense regular and dense irregular connective tissue?

Accepted Answer

Dense regular connective tissue has collagen fibers aligned in parallel, while dense irregular has fibers arranged in multiple directions.

Question 12

Which of the following best describes the composition of ground substance in connective tissue?

Accepted Answer

A gel-like material containing interstitial fluid, cell adhesion proteins, and proteoglycans

Question 13

Which of the following is a function of adipose tissue that distinguishes it from areolar connective tissue?

Accepted Answer

Adipose tissue stores energy in the form of fat and provides insulation.

Question 14

Which of the following best explains why blood is considered a connective tissue?

Accepted Answer

It consists of cells surrounded by a nonliving extracellular matrix (plasma).

Question 15

A patient with a mutation affecting the mesoderm during embryonic development would most likely have abnormalities in which tissues?

Accepted Answer

Muscle and connective tissues

Question 16

Which of the following best describes the role of proteoglycans in the ground substance of connective tissue?

Accepted Answer

They trap water, affecting the viscosity of the ground substance.

Question 17

Which of the following is a correct pairing of connective tissue type and its primary function?

Accepted Answer

Dense regular connective tissue: resists tension in one direction

Question 18

Which of the following best describes the function of intercalated discs in cardiac muscle tissue?

Accepted Answer

They allow rapid communication and coordinated contraction between cardiac muscle cells.

Question 19

A patient presents with a loss of elasticity in the walls of large arteries. Which connective tissue component is most likely deficient?

Accepted Answer

Elastic fibers

Question 20

Which of the following best explains why nervous tissue in the brain has limited regenerative capacity?

Accepted Answer

Neurons in the brain have a very limited ability to divide and replace themselves after injury.

Connective Tissue: Structure, Types, and Functions

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