Histology Mid Term Connective Tissue Questions Maktbt Hamed
Self Assessment ( Test Your Self )
- 1.
One of the following is false about connective tissue proper
- A.
A. Contains large amount of intercellular substance.
- B.
B. Ectodermal in origin.
- C.
C. Contains many cells widely separated.
- D.
D. Penetrated by blood vessels.
Correct Answer
B. B. Ectodermal in origin.Explanation
Connective tissue proper is not ectodermal in origin. Connective tissue proper is derived from mesoderm, which is one of the three primary germ layers in embryonic development. The ectoderm gives rise to structures such as the skin, nervous system, and sensory organs. Connective tissue proper, on the other hand, includes tissues such as loose connective tissue, dense connective tissue, and adipose tissue, which provide support, protection, and storage functions in the body.Rate this question:
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- 2.
All of the following are undifferentiated connective tissue cells except one.
- A.
A. Mast cells.
- B.
B. Undifferentiated mesenchymal cells.
- C.
C. Reticular cells.
- D.
D. Pericytes.
Correct Answer
A. A. Mast cells.Explanation
Mast cells are not undifferentiated connective tissue cells because they are specialized cells that are involved in the immune response and release histamine during allergic reactions. Undifferentiated mesenchymal cells, reticular cells, and pericytes are all examples of undifferentiated connective tissue cells that have the potential to differentiate into various types of connective tissue cells.Rate this question:
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- 3.
One of the following cells is responsible for synthesis the fibers and matrix of connective tissue proper.
- A.
A. Mast cells
- B.
B. Fibroblasts.
- C.
C. Undifferentiated mesenchymal cells.
- D.
D. Pericytes.
Correct Answer
B. B. Fibroblasts.Explanation
Fibroblasts are responsible for synthesizing the fibers and matrix of connective tissue proper. They are the most common type of cell found in connective tissue and are involved in the production and maintenance of the extracellular matrix. Fibroblasts secrete collagen, elastin, and other components that make up the connective tissue, providing structural support and strength. They also play a role in tissue repair and wound healing by producing new connective tissue in response to injury or inflammation. Mast cells, undifferentiated mesenchymal cells, and pericytes have different functions and are not primarily involved in synthesizing the fibers and matrix of connective tissue proper.Rate this question:
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- 4.
All of the following are connective tissue cells responsible for defense and immune functions except one.
- A.
A. Mast cells.
- B.
B. Neutrophils
- C.
C. Plasma cells.
- D.
D. Fibroblasts.
Correct Answer
D. D. Fibroblasts.Explanation
Fibroblasts are not connective tissue cells responsible for defense and immune functions. Instead, they are responsible for producing and maintaining the extracellular matrix of connective tissues. Mast cells are involved in allergic reactions and immune responses, neutrophils are a type of white blood cell that helps to fight off infections, and plasma cells are responsible for producing antibodies.Rate this question:
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- 5.
One of the following is true about Fibroblasts
- A.
A. Are responsible for storage of fat.
- B.
B. Lines blood vessels and capillaries.
- C.
C. Secrete collagenous and elastic fibers,
- D.
D. Cubical large cells.
Correct Answer
C. C. Secrete collagenous and elastic fibers,Explanation
Fibroblasts are connective tissue cells that play a crucial role in the production and maintenance of the extracellular matrix. They secrete collagenous and elastic fibers, which provide structural support and flexibility to tissues. This secretion is essential for wound healing, tissue repair, and maintaining the integrity of various organs and structures in the body. Therefore, option c is true about fibroblasts.Rate this question:
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- 6.
One of the following is true about (Fat cells)
- A.
A. Act as phagocytic cells.
- B.
B. Are branched cells with central oval nuclei.
- C.
C. Can be stained by Sudan III
- D.
D. Secrete heparin and histamine.
Correct Answer
C. C. Can be stained by Sudan IIIExplanation
Fat cells, also known as adipocytes, can be stained by Sudan III. Sudan III is a dye that specifically stains lipids, making it useful for identifying and visualizing fat cells. This staining technique is commonly used in histology and pathology to identify and study adipose tissue.Rate this question:
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- 7.
All of the following are correct regarding fat cells except one
- A.
A. They possess a flattened peripheral nucleus.
- B.
B. They store fat.
- C.
C. They have a rim of cytoplasm around large fat droplet.
- D.
D. They secrete eosinophilic chemotactic factor.
Correct Answer
D. D. They secrete eosinophilic chemotactic factor.Explanation
Fat cells, also known as adipocytes, are specialized cells that store fat in the body. They possess a flattened peripheral nucleus and have a rim of cytoplasm around a large fat droplet, which allows them to store and release fat as needed. However, they do not secrete eosinophilic chemotactic factor. This factor is secreted by other cells, such as mast cells, and it attracts eosinophils to the site of inflammation or infection. Therefore, the correct answer is d. They do not secrete eosinophilic chemotactic factor.Rate this question:
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- 8.
The connective tissue cells found in brown adipose connective tissue
- A.
A. Unilocular fat cells.
- B.
B. Pericytes.
- C.
C. Fibroblasts.
- D.
D. Multilocular fat cells.
Correct Answer
D. D. Multilocular fat cells.Explanation
Multilocular fat cells are the correct answer because they are the specific type of connective tissue cells found in brown adipose tissue. Unlike unilocular fat cells, which are found in white adipose tissue, multilocular fat cells contain multiple lipid droplets and have a higher number of mitochondria, giving them their characteristic brown appearance. Pericytes are a type of cell found in the walls of blood vessels, and fibroblasts are responsible for producing the extracellular matrix of connective tissue.Rate this question:
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- 9.
One of the following is true about Macrophages,
- A.
A. Act as supporting cells.
- B.
B. Are phagocytic in function.
- C.
C. Line blood vessels.
- D.
B. Are responsible for storage of melanin.
Correct Answer
B. B. Are phagocytic in function.Explanation
Macrophages are a type of white blood cell that play a crucial role in the immune system. They are responsible for engulfing and digesting foreign substances, such as bacteria and dead cells, through a process called phagocytosis. This function allows macrophages to eliminate pathogens and debris, contributing to the body's defense against infections and promoting tissue repair. Therefore, option b is true about macrophages.Rate this question:
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- 10.
One of the following is true about plasma cells.
- A.
A. Develop from T- Lymphocytes
- B.
B. Are abundant in white adipose connective tissue.
- C.
C. Secrete antibodies forming humoral immunity.
- D.
D. Are responsible for healing of connective tissue after injury.
Correct Answer
C. C. Secrete antibodies forming humoral immunity.Explanation
Plasma cells are a type of white blood cell that are responsible for producing and secreting antibodies. These antibodies play a crucial role in the humoral immune response, which is a part of the body's defense mechanism against pathogens. Therefore, option c is true about plasma cells. They do not develop from T-lymphocytes (option a), are not abundant in white adipose connective tissue (option b), and are not responsible for healing connective tissue after injury (option d).Rate this question:
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- 11.
One of the following is true about Mast cells.
- A.
A. Are cells responsible for coloration of skin.
- B.
B. Have metachromatic granules stained by toluidine blue
- C.
C. Have many lysosomes.
- D.
D. Develop from B- Lymphocytes.
Correct Answer
B. B. Have metachromatic granules stained by toluidine blueExplanation
Mast cells have metachromatic granules that can be stained by toluidine blue. Metachromatic granules are specialized structures within mast cells that contain substances such as histamine, heparin, and proteoglycans. These granules have the ability to change color when stained with certain dyes, such as toluidine blue, which helps in their identification and characterization. Therefore, option b is true about mast cells.Rate this question:
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- 12.
One of the following statements concerning Mast cells is false
- A.
A. Found in groups along blood vessels.
- B.
B. Secrete heparin and histamine.
- C.
C. Involved in humoral immunity.
- D.
D. Similar to basophils.
Correct Answer
C. C. Involved in humoral immunity.Explanation
Mast cells are not involved in humoral immunity. Humoral immunity is mediated by B cells and the production of antibodies, while mast cells are involved in the innate immune response and release histamine and other inflammatory mediators in response to allergens or pathogens.Rate this question:
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- 13.
The connective tissue cells responsible for storage of melanin Pigments is
- A.
A. Pericyte.
- B.
B. Melanocyte.
- C.
C. Reticular cells.
- D.
D. Melanophaore.
Correct Answer
D. D. Melanophaore. -
- 14.
One of the following is false about white collagenous fibers.
- A.
A. They are made of collagen proteins
- B.
B. They are demonstrated by orceinrstain.
- C.
C. They are affected by acids & alkalies.
- D.
D. They give tissues strength frigidity.
Correct Answer
B. B. They are demonstrated by orceinrstain.Explanation
White collagenous fibers are not demonstrated by orcein stain. Orcein stain is commonly used to demonstrate elastic fibers, not collagenous fibers. Collagenous fibers are made of collagen proteins, are affected by acids and alkalies, and give tissues strength and rigidity.Rate this question:
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- 15.
One of the following is false about characteristics of yellow elastic fibers
- A.
A. They appear as thin branching fibers.
- B.
B. They resist acids and alkalies.
- C.
C. They are stained by orcein stain.
- D.
D. They give tissues strength and rigidity.
Correct Answer
D. D. They give tissues strength and rigidity.Explanation
The correct answer is d. They give tissues strength and rigidity. Yellow elastic fibers do not give tissues strength and rigidity. Instead, they provide elasticity and flexibility to tissues. These fibers help tissues to stretch and recoil, allowing them to return to their original shape after being stretched or compressed.Rate this question:
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- 16.
One of the following is false regarding areolar connective tissue
- A.
A. Contains alLtypes of connective tissue cells and fibers
- B.
B. Connects organs and tissues together.
- C.
C. Fat cells are predominating.
- D.
D. The most common type of connective tissue proper.
Correct Answer
C. C. Fat cells are predominating.Explanation
Areolar connective tissue is a type of loose connective tissue that is found throughout the body. It contains various types of connective tissue cells and fibers, such as fibroblasts, macrophages, mast cells, and collagen and elastic fibers. Its main function is to connect and support organs and tissues. While areolar connective tissue does contain some fat cells, they are not predominating. Adipose tissue is the type of connective tissue that is primarily composed of fat cells. Therefore, the statement that fat cells are predominating in areolar connective tissue is false.Rate this question:
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- 17.
One of the following statements is false concerning white fibrous connective tissue.
- A.
A. Type of connective tissue proper.
- B.
B. Contains numerous collagenous fibers.
- C.
C. Found in large blood vessels.
- D.
D. Classified into regular and irregular types.
Correct Answer
C. C. Found in large blood vessels.Explanation
White fibrous connective tissue is a type of connective tissue proper that contains numerous collagenous fibers. It is classified into regular and irregular types. However, it is not found in large blood vessels.Rate this question:
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- 18.
One of the following statements is true about the adipose connective tissue.
- A.
A. Fat cells are predominating.
- B.
B. Rich in elastic fibers.
- C.
C. Found in trachea and bronchi.
- D.
D. Formed of network of reticular cells and fibers.
Correct Answer
A. A. Fat cells are predominating.Explanation
The correct answer is a. Fat cells are predominating. Adipose connective tissue is primarily composed of adipocytes, or fat cells. These cells store energy in the form of fat and provide insulation and cushioning for the body. Adipose tissue is found throughout the body, including under the skin, around organs, and in bone marrow. It is not rich in elastic fibers (b), found in the trachea and bronchi (c), or formed of a network of reticular cells and fibers (d).Rate this question:
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- 19.
One of the following is true about the tendons.
- A.
A. Plasma cells inbetween.
- B.
B. Regular bundles of elastic fibers.
- C.
C. Irregular bundles of collagen fibers.
- D.
D. Regular parallel bundles of collagen fibers.
Correct Answer
D. D. Regular parallel bundles of collagen fibers.Explanation
The tendons are composed of regular parallel bundles of collagen fibers. Collagen is a strong and flexible protein that provides structural support to the tendons, allowing them to withstand tension and transmit forces from muscles to bones. The regular arrangement of collagen fibers in tendons helps to increase their strength and efficiency in transmitting forces, making them essential for movement and stability in the body.Rate this question:
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- 20.
Silver stain is specific to demonstrate.
- A.
A. Collagen fibers.
- B.
B. Mast cells.
- C.
C. Reticular fibers.
- D.
D. Elastic fibers.
Correct Answer
C. C. Reticular fibers.Explanation
Silver stain is a specific staining technique used to demonstrate reticular fibers. Reticular fibers are a type of connective tissue fibers that provide structural support in various organs and tissues, such as lymph nodes, spleen, and liver. These fibers are composed of type III collagen and can be visualized using silver staining, which highlights their presence and distribution. Therefore, the correct answer is c. Reticular fibers.Rate this question:
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- 21.
Orcein stain is specific to demonstrate.
- A.
A. Mast cells.
- B.
B. Elastic fibers.
- C.
C. Reticular fibers.
- D.
D. Collagen fibers.
Correct Answer
B. B. Elastic fibers.Explanation
Orcein stain is a specific stain used to demonstrate elastic fibers. Elastic fibers are a type of connective tissue that provide elasticity and resilience to various tissues in the body. When stained with orcein, elastic fibers appear purple or brown, allowing for their visualization under a microscope. This stain is not specific for mast cells, reticular fibers, or collagen fibers, as they require different staining techniques for visualization. Therefore, the correct answer is b. Elastic fibers.Rate this question:
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Aug 24, 2023Quiz Edited by
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Apr 21, 2013Quiz Created by
Maktabthamed
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