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Molecular Cytology > Epithelium > Flashcards

Epithelium Flashcards

1
Q

What is the definition of epithelium?

A

Epithelium is a type of tissue that covers the surfaces of the body, inside and out.

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2
Q

True or False: Epithelial cells are closely packed together with little extracellular matrix.

A

True

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3
Q

What are the functions of epithelial tissue?

A

Protection, absorption, secretion, and sensation

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4
Q

Fill in the blank: Epithelial cells are avascular, meaning they lack _________.

A

blood vessels

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5
Q

What are the two main types of epithelial tissue based on the number of cell layers?

A

Simple and stratified epithelium

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6
Q

Which type of epithelium is made up of a single layer of cells?

A

Simple epithelium

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7
Q

Which type of epithelium is made up of multiple layers of cells?

A

Stratified epithelium

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8
Q

What is the function of simple squamous epithelium?

A

Allows for diffusion and filtration

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9
Q

Where is simple squamous epithelium found in the body?

A

Lining blood vessels and air sacs of lungs

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10
Q

What is the function of simple cuboidal epithelium?

A

Secretion and absorption

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11
Q

Where is simple cuboidal epithelium found in the body?

A

Kidney tubules and gland ducts

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12
Q

What is the function of simple columnar epithelium?

A

Absorption and secretion

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13
Q

Where is simple columnar epithelium found in the body?

A

Intestines and stomach lining

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14
Q

What is the function of pseudostratified columnar epithelium?

A

Protection and secretion

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15
Q

Where is pseudostratified columnar epithelium found in the body?

A

Respiratory tract

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16
Q

What is the function of stratified squamous epithelium?

A

Protection against abrasion

17
Q

Where is stratified squamous epithelium found in the body?

A

Skin and lining of the mouth

18
Q

What is the function of transitional epithelium?

A

Allows for stretching and recoiling

19
Q

Where is transitional epithelium found in the body?

A

Urinary bladder

20
Q

What is the function of glandular epithelium?

A

Secretion of hormones and enzymes

21
Q

Where is glandular epithelium found in the body?

A

Endocrine and exocrine glands

22
Q

What is the basement membrane?

A

A thin, delicate membrane that separates epithelial tissue from underlying connective tissue

23
Q

What is the apical surface of epithelial cells?

A

The top surface that faces the external environment or a body cavity

24
Q

What is the basolateral surface of epithelial cells?

A

The sides and bottom surface of epithelial cells that are in contact with neighboring cells and the basement membrane

25
Q

What are the 5 functions of epithelium?

A

Secretion, sensation, protection, absorption and transport

26
Q

What are the 5 characteristics of epithelium?

A

Cellularity(tightly packed), polarity, avascular, regenerative, supported by connective tissue

Molecular Cytology (4 decks)

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