Histology Flashcards

1
Q

What is the basal lamina?

A

specialized ECM composed of collagen, lamins and glycoprotein

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2
Q

What are the functions of the basal lamina?

A

separates epithelial cells and underlying connective tissue
surrounds certain types of cells
separates layers of cells

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3
Q

What are the characteristics of loose connective tissue?

A

acts as packing material: many cells types and few fibers

high amount of ground substance gives appearance of empty space

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4
Q

What are the characteristics of dense irregular connective tissue?

A

woven collagen fibers, usually found in joints or under skin

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5
Q

What are the characteristics of dense regular connective tissue?

A

wavy parallel collagen fibers, usually found in tendons

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6
Q

What are the characteristics of reticular fibers?

A

support branched tissue found in nodes and hemapoetic tissues

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7
Q

What are reticular fibers made of?

A

Type III Collagen

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8
Q

What are the characteristics of adipose tissue?

A

large white (fat) pockets with nuclei pushed to the sides

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9
Q

What are the predominant cells in connective tissue?

A

fibroblasts

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10
Q

What is the function of fibroblasts?

A

produce most fiber/matrix components

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11
Q

What is the function of myofibroblasts?

A

secrete like fibroblasts but contract like smooth muscle

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12
Q

What is the function of macrophages?

A

help immune response, indented nuclei

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13
Q

What is the function of adipose cells?

A

fat storage (big and white)

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14
Q

What is collagen made of?

A

three protein chains that wrap around each other, require Vitamin C

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15
Q

What is elastin made up?

A

elastin and microfibrils, requires fibrilin for elasticity

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16
Q

What tissue is striated?

A

skeletal and cardiac

17
Q

What tissues have sarcomeres?

A

skeletal and cardiac

18
Q

What do skeletal myocytes consist of?

A

very long nucleated syncytium with peripheral nuclei (multiple cells fused)

19
Q

What is the organization of muscles from biggest to smallest?

A

muscle, fascicle, fiber (cell), myofilaments, sarcomeres, myofibrils