Practicals-Epithelium Flashcards

1
Q

What kind of epithelial cells are found in the kidney?

A

Simple squamous in bowman’s capsule
Simple columnar in proximal convoluted tubules

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2
Q

What constitutes brush border of proximal convoluted tubule?

A

Microvilli and glycocalyx to increase surface area for effective reabsorption

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3
Q

What kind of epithelium is found in stomach?

A

Simple columnar epithelium

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4
Q

What structures are found at the wall of the jejunum?

A

Microvilli and Goblet cells

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5
Q

What are goblet cells?

A

Unicellular exocrine glands that secret mucus and do not appear under the microscope due to accumulation of mucus which does not stain

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6
Q

What is the similarity between proximal convoluted tubule and jejunum?

A

Microvilli and Glycocalyx for absorption

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7
Q

What kind of epithelium does trachea have?

A

Pseudostratified ciliated columnar epithelium with goblet cells

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8
Q

Why is the epithelium of trachea called pseudostratified?

A

Appearance of nuclei at different levels because of different cell sizes, but all cells rest at the basement membrane

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9
Q

Function of basal cells in trachea?

A

Stem cells-produce new cells

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10
Q

In which system is the pseduostratified columnar ciliated epithelium with goblet cells is exclusively associated with?

A

Respiratory system

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11
Q

What is the function of cilia?

A

Enables movement of particles along epithelial surface

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12
Q

What kind of epithelium is found in the walls of seminiferous tubules of the testis?

A

Complex stratified epithelium

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13
Q

Why is the epithelium of seminiferous tubules called complex stratified epithelium?

A

Because the lining cells undergo mitotic cell division

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14
Q

Where is stereocilia found?

A

Epididymis

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15
Q

What are stereocilia?

A

Long non-motile processes

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16
Q

What is the function of stereocilia?

A

Absorption of residual contents during spermatogenesis

17
Q

What kind of epithelium is found in the oesophagus?

A

Stratified squamous epithelium

18
Q

Why is it called stratified?

A

More than one layer of cells

19
Q

Why is it called squamous?

A

Flattened cells at the superficial layer

20
Q

Stratified squamous non keratinized epithelium is associated with what type of mucosa?

A

Wet type of mucosa

21
Q

Why do cells of stratum corneum appear detached?

A

Because they don’t have desmosomes in between them

22
Q

What kind of epithelium found in the urinary bladder?

A

Transitional

23
Q

Function of transitional epithelium in the bladder?

A

Protection, barrier and can be distensible

24
Q

What is the exocrine part of pancreas made of?

A

Acini

25
Q

What is the endocrine part of pancreas made of?

A

Islets of langerhans

26
Q

Why do acinar cells have basal basophilia?

A

Due to abundant rer and ribosomes

27
Q

What are the two pancreatic ducts?

A

Intralobular duct and intercalated duct

28
Q

What are the features of the submandibular salivary gland?

A

Serous acini, mucous acini, striated ducts

29
Q

What is the modification seen on the basal surface of cells lining the striated duct of the salivary gland?

A

In foldings of plasma membrane with numerous mitochondria

30
Q

Function of infolding of plasma membrane of striated ducts in salivary gland?

A

Active transportation of ion and water to concentrate saliva

31
Q

State the type of secretion of submandibular gland?

A

Merocrine, exocrine gland