BB (Epithelium) Questions

What forms the striated border? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: a

What type of epithelium is one cell layer thick? a. Simple b. Stratified c. Squamous d. Cuboidal e. Columnar

Answer: a

What is a gland called if it has an unbranched duct? a. Simple gland b. Compound gland c. Tubular d. Alveolar e. Tubuloalveolar

Answer: a A simple gland has an unbranched duct.

What type of gland secretes its product directly into the bloodstream? a. Endocrine gland b. Multicellular gland c. Exocrine gland d. All of the above e. None of the above

Answer: a An endocrine gland secretes its product directly into the bloodstream, without a duct or tube. An exocrine gland secretes its product through a duct or tube.

What do you call a tissue composed of a conglomeration of cells which are tightly packed together, yet which does not have a free surface? (Ex: parenchyma of adrenal gland) a. Epithelioid tissue b. Mesothelium c. Endothelium d. Transitional e. Pseudostratified

Answer: a Epithelial tissue has cells that are very tightly packed together. There is always a free surface associated with epithelial tissue. If a tissue is composed of a conglomeration of cells in tightly packed together, but it does not have a free surface, the tissue is called epithelioid tissue.

What are finger like projections on the surface of some cells called? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: a Microvilli are the finger like projections seen on the surface of some cells. The appearance of microvilli form what is also called the brush border or striated border.

What forms the brush border? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: a Microvilli are the finger like projections seen on the surface of some cells. The appearance of microvilli form what is also called the brush border or striated border.

What type of tissue forms the alveoli in the lung? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Pseudostratified epithelium

Answer: a The alveoli are formed by simple squamous epithelium.

What type of tissue lines blood vessels? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: a The lining of a blood vessel is simple squamous epithelium. This lining is called endothelium.

What type of epithelium is more than one layer thick? a. Simple b. Stratified c. Squamous d. Cuboidal e. Columnar

Answer: b

What is a gland called if it has an branched duct? a. Simple gland b. Compound gland c. Tubular d. Alveolar e. Tubuloalveolar

Answer: b A compound gland has a branched duct.

Which of the following is a unicellular gland? a. Squamous cell b. Goblet cell c. Basal cell d. Basket cell e. Sertoli cell

Answer: b A goblet cell is a unicellular gland.

What do you call the simple squamous epithelium that lines the abdominal cavity? a. Epithelioid tissue b. Mesothelium c. Endothelium d. Transitional e. Pseudostratified

Answer: b Mesothelium is simple squamous epithelium that lines the abdominal cavity, the pericardial cavity, and the thoracic cavity.

Which of the following is NOT lined by a mucosa? a. Genitourinary tract b. Pericardial cavity c. Respiratory tract d. Alimentary canal e. All of the above are lined by a mucosa

Answer: b Serosa lines the peritoneal cavity, pericardial cavity and pleural cavity. Mucosa lines the alimentary canal, genitourinary tract and respiratory tract.

Which of the following is lined by a serosa? a. Genitourinary tract b. Peritoneal cavity c. Respiratory tract d. Alimentary canal e. All of the above are lined by a mucosa

Answer: b Serosa lines the peritoneal cavity, pericardial cavity and pleural cavity. Mucosa lines the alimentary canal, genitourinary tract and respiratory tract.

What is the surface modification seen on the cells of the epididymis? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: b Stereocilia are very long microvilli. Stereocilia are seen in the epididymis and the hair cells of the ear.

What type of tissue composes the kidney tubules? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: b The kidney tubules are simple cuboidal epithelium. Epithelium lines body cavities and surfaces. Simple cuboidal epithelium is "simple" because it is one cell thick. "Cuboidal" refers to the shape of the cells.

What type of tissue lines most ducts? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: b The lining of most ducts is simple cuboidal epithelium. Epithelium lines body cavities and surfaces. Simple cuboidal epithelium is "simple" because it is one cell thick. "Cuboidal" refers to the shape of the cells.

What type of epithelium is composed of flat cells? a. Simple b. Stratified c. Squamous d. Cuboidal e. Columnar

Answer: c

What type of gland secretes its product through a duct or tube? a. Endocrine gland b. Multicellular gland c. Exocrine gland d. All of the above e. None of the above

Answer: c An endocrine gland secretes its product directly into the bloodstream, without a duct or tube. An exocrine gland secretes its product through a duct or tube.

What cell surface modification is made of microtubules? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: c Cilia is the hair like surface modification seen on some epithelia. Cilia are made of microtubules.

What do you call the simple squamous epithelium that lines the blood vessels? a. Epithelioid tissue b. Mesothelium c. Endothelium d. Transitional e. Pseudostratified

Answer: c Endothelium is simple squamous epithelium that lines the vascular system.

What type of epithelium is associated with goblet cells? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Pseudostratified epithelium

Answer: c Goblet cells are associated with simple columnar epithelium of the gastrointestinal tract. Epithelium lines body cavities and surfaces. Simple columnar epithelium is "simple" because it is one cell thick. "Columnar" cells are taller than they are wide and have an oval nucleus.

What type of tissue lines most of the gastrointestinal tract? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: c The lining of the gastrointestinal tract is simple columnar epithelium.

What cell type makes up the mucosa of the gallbladder? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: c The mucosa of the gallbladder is made of simple columnar epithelium.

What type of epithelial cells are as tall as they are wide? a. Simple b. Stratified c. Squamous d. Cuboidal e. Columnar

Answer: d

What type of epithelium has dome shaped cells on the apical surface? a. Epithelioid tissue b. Mesothelium c. Endothelium d. Transitional e. Pseudostratified

Answer: d

What type of epithelium is composed of cells which all touch the basement membrane and is only one cell layer thick? a. Stratified squamous epithelium b. Transitional epithelium c. Stratified cuboidal epithelium d. Pseudostratified epithelium e. None of the above

Answer: d

What is a gland called if the secretory portion is flask shaped? a. Simple gland b. Compound gland c. Tubular d. Alveolar e. Tubuloalveolar

Answer: d A simple gland has an unbranched duct. A compound gland has a branched duct. If the secretory portion of a gland is tube shaped, it is called "tubular". If the secretory portion of a gland is flask shaped, it is called "alveolar" or "acinar". If the secretory portion of a gland is a tube shaped but at the terminus is flask shaped, it is called "tubuloalveolar".

What is another term for an acinar gland? a. Simple gland b. Compound gland c. Tubular d. Alveolar e. Tubuloalveolar

Answer: d If the secretory portion of a gland is flask shaped, it is called "alveolar" or "acinar"

What is a characteristic of the cells in the epidermis of the skin? a. Microvilli b. Stereocilia c. Cilia d. Keratinization e. Both a and b

Answer: d Keratinization is seen in the epidermis. Cells in the stratum corneum are essentially just bags of keratin.

Which of the following is NOT lined by a serosa? a. Peritoneal cavity b. Pericardial cavity c. Pleural cavity d. Respiratory tract e. All of the above are lined by a serosa

Answer: d Serosa lines the peritoneal cavity, pericardial cavity and pleural cavity. Mucosa lines the alimentary canal, genitourinary tract and respiratory tract.

Which of the following is lined by a mucosa? a. Peritoneal cavity b. Pericardial cavity c. Pleural cavity d. Alimentary canal e. All of the above are lined by a mucosa

Answer: d Serosa lines the peritoneal cavity, pericardial cavity and pleural cavity. Mucosa lines the alimentary canal, genitourinary tract and respiratory tract.

What type of epithelium forms the epidermis? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Pseudostratified epithelium

Answer: d The epidermis is formed by stratified squamous epithelium. Epithelium lines body cavities and surfaces. Stratified squamous epithelium is "stratified" because it is more than one cell layer thick. "Squamous" refers to the fact that the surface cells of the stratified squamous layer are flat.

What type of tissue lines the esophagus? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: d The lining of the esophagus is stratified squamous epithelium.

What type of epithelial cells are taller than they are wide? a. Simple b. Stratified c. Squamous d. Cuboidal e. Columnar

Answer: e

What type of epithelium appears stratified, but is not? a. Epithelioid tissue b. Mesothelium c. Endothelium d. Transitional e. Pseudostratified

Answer: e

What is a gland called if the secretory portion is tube shaped ending in a flask shaped area at the terminus? a. Simple gland b. Compound gland c. Tubular d. Alveolar e. Tubuloalveolar

Answer: e If the secretory portion of a gland is a tube shaped but at the terminus is flask shaped, it is called "tubuloalveolar".

What type of tissue lines the bladder? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Transitional epithelium

Answer: e The lining of the bladder is transitional epithelium. Epithelium lines body cavities and surfaces. There are domed shaped cells on the apical surface.

What type of epithelium lines the trachea? a. Simple squamous epithelium b. Simple cuboidal epithelium c. Simple columnar epithelium d. Stratified squamous epithelium e. Pseudostratified epithelium

Answer: e The trachea is lined by pseudostratified squamous epithelium.