Question 1

Joshua has had a portion of his liver removed. His physician is confident that Joshua will improve because the liver will regenerate. How is this possible?
A) Stabile cells of the liver are able to divide and replace the removed liver tissue.
B) Permanent cells of the liver are able to divide and replace the removed liver tissue.
C) New cells are not formed; the remaining tissue just spreads out, filling the newly formed space.
D) Neurons associated with the liver differentiate into liver cells to replace the missing tissue.

Accepted Answer

Stabile cells, such as those in the liver, have the unique ability to enter the cell cycle and divide after a period of quiescence. This capacity allows the liver to regenerate tissue that has been removed or damaged.

Question 2

Which of the following statements accurately represents labile cells?
A) Labile cells are important to the body, providing a source for new cells to replace those that are damaged.
B) Labile cells, such as neurons, have a very limited ability to divide.
C) Labile cells are only found in the hemopoietic tissue of red bone marrow.
D) Labile cells are eliminated from the body after birth of the fetus.

Accepted Answer

Labile cells are characterized by their continuous and rapid turnover, constantly dividing to replace lost or damaged cells, making them crucial for tissue repair and maintenance. Neurons, mentioned in option B, are actually examples of non-labile cells, as they have a very limited capacity to regenerate. Labile cells are not exclusively found in red bone marrow; they are also present in tissues like the skin and the lining of the gastrointestinal tract, contradicting option C. Option D is incorrect because labile cells are not eliminated after birth; they remain active throughout an individual's life, continually renewing certain tissues.

Question 3

A glandular secretion has been analyzed and indicates the presence of cytoplasmic components that include DNA and nuclear proteins. This indicates ________ mode of secretion.
A) holocrine
B) merocrine
C) autocrine
D) eccrine

Accepted Answer

Holocrine secretion involves the release of the entire contents of the cell, including cytoplasmic components and the cell membrane, which would include DNA and nuclear proteins. This is characteristic of holocrine glands, where cells disintegrate to release their contents.

Question 4

Nicholas has been diagnosed with a condition resulting from inflammation of tissue associated with his lungs. Which statement best clarifies the condition?
A) Nicholas has inflammation of the pleura, the serous membranes associated with the lungs.
B) Nicholas has inflammation of the mucous membranes associated with the lungs.
C) Nicholas has inflammation of the peritoneum, the synovial membrane associated with the lungs.
D) Nicholas has inflammation of the cutaneous membrane associated with the lungs.

Accepted Answer

The pleura are the serous membranes surrounding the lungs, and inflammation of these membranes is known as pleuritis or pleurisy, fitting the description of Nicholas's condition.

Question 5

Students were asked to identify the type of muscle tissue that makes up the arrector pili, a structure that moves the hair relative to the skin. Which of the following correctly identified the muscle tissue type?
A) David stated that it is smooth muscle, eliminating cardiac muscle because the tissue is not located in the heart and skeletal muscle because it is not under voluntary control.
B) Sally stated that it is cardiac muscle, eliminating smooth muscle because it is not associated with blood vessels and skeletal muscle because it is not attached to bones.
C) Hannah stated that it is skeletal muscle, eliminating cardiac muscle because it is not located in the heart and smooth muscle because it is not part of blood vessels.

Accepted Answer

The arrector pili muscles are composed of smooth muscle tissue. These muscles are responsible for causing hairs to stand up when they contract, a reaction often associated with cold or fear, and this process is not under voluntary control, distinguishing it from skeletal muscle. Additionally, these muscles are not part of the heart, which is the location of cardiac muscle.

Question 6

A tissue sample has the following characteristics: large cells with many processes, one which is very long; smaller cells scattered amongst the larger cells. Which of the following statements accurately identifies the tissue?
A) The tissue is nervous tissue. The large cells are neurons with dendrites and a long axon, and the smaller cells are glia.
B) The tissue is dense irregular connective elastic tissue. The large cells are fibroblasts with attached collagen fibers, and the smaller cells are glia.
C) The tissue is nervous tissue. The large cells are fibroblasts with dendrites and collagen fibers, and the smaller cells are squamous cells.
D) The tissue is dense regular connective tissue. The large cells are neurons with dendrites and a long axon, and the smaller cells are fibroblasts.

Accepted Answer

The tissue described is nervous tissue. The large cells with many processes, including a very long one, are neurons, which have dendrites and an axon. The smaller cells scattered amongst the neurons are glial cells, which support and protect neurons.

Question 7

Which of the following is an example of labile cells?
A) Hemocytoblasts are cells that divide and give rise to multiple types of blood cells.
B) Liver cells have the ability to divide and give rise to other liver cells.
C) Skeletal muscle fibers increase in size by adding more cytoplasmic components.
D) Both "hemocytoblasts are cells that divide and give rise to multiple types of blood cells" and "liver cells have the ability to divide and give rise to other liver cells" are correct.

Accepted Answer

Labile cells are cells that continuously divide and replace themselves. Hemocytoblasts, which give rise to blood cells, are an example of labile cells.

Question 8

A tissue functions to provide protection for an exposed surface. This tissue is most likely ________.
A) simple squamous epithelial tissue
B) stratified squamous epithelial tissue
C) fibrous connective tissue
D) transitional epithelial tissue

Accepted Answer

The answer of A tissue functions to provide protection for...

Quiz 4: Tissues

Joshua has had a portion of his liver removed. His physician is confident that Joshua will improve because the liver will regenerate. How is this possible?

Which of the following statements accurately represents labile cells?

A glandular secretion has been analyzed and indicates the presence of cytoplasmic components that include DNA and nuclear proteins. This indicates ________ mode of secretion.

Nicholas has been diagnosed with a condition resulting from inflammation of tissue associated with his lungs. Which statement best clarifies the condition?

Students were asked to identify the type of muscle tissue that makes up the arrector pili, a structure that moves the hair relative to the skin. Which of the following correctly identified the muscle tissue type?

A tissue sample has the following characteristics: large cells with many processes, one which is very long; smaller cells scattered amongst the larger cells. Which of the following statements accurately identifies the tissue?

Which of the following is an example of labile cells?

A tissue functions to provide protection for an exposed surface. This tissue is most likely ________.