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histology > tissue part 1 > Flashcards

tissue part 1 Flashcards

1
Q

covers the external surfaces of the body, lines the internal surfaces of the body and forms exocrine glands.

A

epithelial tissue

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2
Q

serves as support soft body parts and bind structures together

A

connective tissue

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2
Q

forms the muscular wall of tubular organs and the flesh of the body movement

A

muscle tissue

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2
Q

conducts impulses used to help control and coordinate body activities.

A

nervous tissue

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3
Q

components of tissue

A

cells, intracellular substance, fluid

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3
Q

the living components of a tissue and vary in number, shape and arrangement depending on type of tissue

A

cell

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3
Q

the liquid component of a tissue that occurs in between cells where it is known as extracellular fluid and in blood where it is called plasma

A

fluid

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4
Q

the non-living materials produced by cells, such as fibroblast (connective tissue cells), chondroblast (cartilage cells) and osteoblast (bone cells),

A

intracellular substances

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5
Q

organic body material in animals made up of large numbers of cell that are similar in form and function and their related intercellular substances

A

tissues

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6
Q

major component of ct

A

intercellular substance

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7
Q

2 types of intercellular substance

A

amorphous substance and formed

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8
Q

Amorphous substance literally means

A

without form

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9
Q

difficult to observe with routine paraffin technique. It is viscous, gel-like and binds to large quantities of water. It forms the ground substance matrix of tissue and occupies areas not occupied by cells and forms intercellular substance.

A

amorphous substance

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10
Q

amorphous substance is chemically composed of

A

glycoproteins or proteogycans

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11
Q

acts as barrier to bacteria and shock absorber in tissues.

A

amorphous substance

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12
Q

are fibrous in nature and chemically composed of neutral mucosubstances glycoproteins).

A

formed elements

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13
Q

3 types of formed elements

A

collagen fiber, elastic and reticular

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14
Q

the predominant fiber in most proper connective tissues

A

collagen fibers are

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15
Q

likened to a “biological rope” because of its immense strength as it provides high tensile strength and prevent over-distension.

A

collagen fiber

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16
Q

In embryonic connective tissue, they are fine filamentous materials stained glassy pink in H&E.

A

individual collagen fiber

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17
Q

in adult animals, these are like tendon’ individual fibers are widely glassy bands with smooth edges

A

connective tissue

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18
Q

In stretch preparation , the fibers appear as wavy thick bands of indefinite length and random arrangement

A

of areolar connective tissue

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19
Q

Adult collagen fiber is composed of

A

collagen fibrils

20
Q

composed of overlapping tropocollagen molecule laid together in triplets like a braid of hairs.

A

collagen fibrils

21
Q

the most common protein in animals

A

collagen

22
Q

a type of collagen that is banded; most abundant; present in skin, bone and tendon;

A

type 1

23
Q

type of collagen that is unbanded; present in cartilage

A

type 2

24
Q

type of collagen thats make up the reticular fibers,

A

type 3

25
Q

tye of collagen that is unbanded, major component of the basement membrane

A

type 4

26
Q

strands or sheet and provides springiness and stretchability to the tisse.

A

elastic fiber

27
Q

this is difficult to observe in H&E sections

A

elastic fibers

28
Q

In dense regular elastic connective tissue like ligamentum nuchae, elastic fibers are

A

individual fibers are long, narrow, straight and branched bands with rough edges.

29
Q

In In stretch preparation of loose (areolar) connective tissue, elastic fibers are

A

thinner than collagen fibers and may have a corkscrew appearance.

30
Q

Each elastic fiber consists of a

A

protein elastin (amorphous substance) surrounded by microfibrils

31
Q

chemically made up of type III collagen, a very fine collagen fiber. Not visible with routine H & E but stains well with silver and periodic acid schiff (PAS)

A

Reticular fibers

32
Q

short, black, wiry, branched structures that interconnect with each other to form the characteristic netlike arrangement.

A

silver stained individual reticular fibers

33
Q

the principal role of reticular fibers is

A

to form a delixate scaffolding to anchor blood vessels and nerve fibers to the more robust surrounding CT

34
Q

epithelium comes from greek roots _____

A

epi=upon
thele=breast

35
Q

aggregation of cells which are in apposition over a large part of their surfaces, having very little intercellular space and resting on basement membrane and which are specialized for absorptive, secretory, protective, or sensory activities.

A

epithelial tissue

36
Q

defined as a relatively avascular and almost wholly cellular (i.e., having little or no connective tissue associated with it)

A

epithelila tissue

37
Q

tissue similar to epithelium but lack basal lamina

A

epithelioid

38
Q

Epithelial chief components are____ which are generally similar in structure and function.

A

cells

39
Q

the cellsclosely joined together laterally and/basally by junctional complexes.

A

epithelium

40
Q

presents a free surface that faces a canal or cavity or lumen and may present special modifications, such as microvilli or cilia that enhance the function of the epithelium.

A

epithelium

41
Q

increase the surface area for absorption or secretion.

A

microvilli

42
Q

move secretions and other substances across the epithelium.

A

cilia

43
Q

Rests on a basement membrane that attaches it to the underlying connective tissues.

A

epithelium

44
Q

what is a basement membrane

A

when the epithelial cells lie on the reticular lamina which is bound to another ct called areolar cells

45
Q

since epithelium is avascular, how are cells nourished?

A

by diffusion of nutrients from capillaries in the underlying connective tissue.

46
Q

exihibit polarity since they have apex and base where different activities take place (

A

epithelial cells

47
Q

Epithelial tissue embryonic origin mostly comes from

A

ectoderm, endoderm, and few from mesoderm

48
Q

(lining epithelium of digestive tube, parenchyma of the liver, pancreas and other digestive glands

A

endoderm

49
Q

(lining epithelium of urinary organ (ureter) and reproductive tracts

A

mesoderm

50
Q

have high ploriferation and turnover rates. they are short-lived, typically days to weeks and dead or damage cells are regularly replaced by mitosis of younger cells.

A

epithelial cells

51
Q

functions of epithelia

A

secretions
gas exchange
nutrient absorption
UV barrier
physical barrier
pigmentation (for camouflage)
excretion
stimulis reception

52
Q

secretory sheets of epithelial tissue is found in

A

reproductive tract, conjuctiva, GI tract

53
Q

examples of epithelial cells that has secretory functions

A

goblet cells of epithelial sheets(secretes mucinous material)

histology (11 decks)

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