Notes Flashcards

1
Q

Tissue definition

A

Cells organized by similarity in a group

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2
Q

Histology definition

A

The study of tissues

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3
Q

4 major tissues

A

Epithelial, Connective, Muscle, and Nervous

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4
Q

What does epithelial tissues do?

A

Covers the body surface, organs, lining of body cavities, and hollow organs.

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5
Q

Basement membrane definition

A

A thin, non-living layer that anchors the epithelium

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6
Q

Epithelial tissues lack what?

A

blood vessels

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7
Q

Epithelial Tissue functions

A

Being a protective barrier, secretion, absorption, and excretion

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8
Q

Tissues are classified how?

A

shape and number of layers

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9
Q

Squamous characteristics

A

thin, flattened, irregularly-shaped cells

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10
Q

Cuboidal characteristics

A

cubelike cells

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11
Q

Columnar characteristics

A

elongated cells

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12
Q

Simple chararcteristics

A

single layer

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13
Q

Stratified characteristics

A

two or more layers

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14
Q

Connective Tissues provide what?

A

support and protection

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15
Q

Fibroblasts definition

A

most common fixed cell in connective tissues
- star shaped, and produce fibers

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16
Q

Macrophages definition

A

mostly white blood cells
- usually attached to fiber
- carry on phagocytosis and help with immunity

17
Q

Mast Cells definition

A

large and near blood vessels
- prevents blood clotting
- promotes inflammation

18
Q

3 specialized connective tissues

A

Cartilage, bone, and blood

19
Q

Membrane definition

A

Sheets of cells made up of epithelial and connective tissues

20
Q

Muscle Tissues definiton

A

Ability to contract and move body parts
-sometimes called muscle fibers

21
Q

Nervous Tissue definition

A

found in the brain, spinal cord, and peripheral nerves
-transmit impulses down path of neurons

22
Q

Chemistry definition

A

the composition of substances and how they change