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Histology > Epithelium and Glands > Flashcards

Epithelium and Glands Flashcards

1
Q

4 types of tissue

A

Nervous, Epithelial, Muscle, Connective

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2
Q

Nervous Tissue

A

Transmission of nerve pulses

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3
Q

Epithelial Tissue

A

Tissue that lines the outer surface of body cavities except for joints. They are avascular, contain secretory cells and keratin filaments, they have polarity and an ability to regenerate. Desmosomes make them act like a continuous sheet.

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4
Q

Muscle Tissue

A

Movement

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5
Q

Connective Tissue

A

Support and protection

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6
Q

3 germ layers

A

Ectoderm, Mesoderm, Endoderm

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7
Q

Functions of Epithelial Tissue

A

Protection, secretion, absorption (diffusion), and sensory reception

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8
Q

Simple cuboidal

A

Located within the thyroid, choroid plexus

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9
Q

Simple columnar

A

Located in the stomach, intestine

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10
Q

Transitional epithelium

A

Contains a binucleated upper layer that can change shape. Ex/ bladder

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11
Q

Psedostratified epithelium

A

A rare type of layer that is falsely stratified with nuclei that intervene the membrane. Ex/ epididymus, trachea

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12
Q

Parenchyma

A

Secretory portion of an exocrine gland

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13
Q

Stroma

A

Connective tissue that surrounds the parenchyma and supports the secretory cells

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14
Q

Endocrine

A

Glands that secrete into blood vessels

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15
Q

Exocrine

A

Glands that secrete onto the surface or into the cavity of a hollow organ

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16
Q

Acinus

A

Secretory portion of a gland

17
Q

Duct

A

Conducting portion of a gland

18
Q

Serous cells

A

Acinar glands that secrete aqueous substances and contains more proteins. It stains darker.

19
Q

Mucous cells

A

Secretes mucous polysaccharide. Stains lighter.

20
Q

Merocrine gland

A

Most common type of gland that uses exocytosis to transport small vesicles to the apical part of the membrane for release

21
Q

Apicrine gland

A

a large chunk of the apical cytoplasm is released. (ex/ mammory glands)

22
Q

Holocrine gland

A

whole cell is released, it ruptures and releases its contents. (ex/ sebaceous glands)

23
Q

Microvilli

A

contains actin filaments, fuzzy, brush border looking, skinnier than cilia.

24
Q

Cilia

A

Contains an axoneme, more defined structure, wider and longer than micivilli.

25
Q

Stereocillia

A

Longer and skinnier than microvilli

26
Q

Glycocalyx

A

Contains sugar residues that coat surface of microvilli

27
Q

Common defects in cilia

A

Missing central pair, radial spoke defect, and absent inner and outer dynein arms

Histology (26 decks)

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