Body Tissues Flashcards

1
Q

Tissues

A

groups of cells that are similar in structure and perform common function

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2
Q

FOUR Types Of Tissues

A

CONNECTIVE TISSUE

MUSCLE TISSUE

EPITHELIAL TISSUE

NERVOUS TISSUE

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3
Q

EPITHELIAL TISSUE

*epithelial tissue= glands*

A

associated with body covering (skin) and body lining (of bladder or stomach)

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4
Q

HISTOLOGY

A

the study of tissues

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5
Q

FUNCTION OF EPITHELIAL TISSUE

A
  1. protect
  2. absorbtion
  3. filtration
  4. secretion
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6
Q

CLASSIFICATION OF EPITHELIUM

A

number of layers and the shape of the cells

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7
Q

number of layers in the epithelium tissue

A

there are 2 layers.

1st layer= simple ; used for absorption, filtration and secretion

2nd layer= stratified ; used for protection

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8
Q

shape of epithelium tissue

A

squamous - flattened

cuboidal - cube shaped

columnar - column like

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9
Q

mucosae

A

lines all body cavities that open to body surface and they are often adapted for absorption or secretion.

* 1st layer epithelial tissue*

  1. respiratory (nose and trachea)
  2. digestive
  3. urogenital (genital and urinary opening)
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10
Q

gland

A

consists of cells that make and transport a particular product/secretion

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11
Q

TWO TYPES OF GLANDULAR EPITHELIA

A
  1. endocrine glands
  2. exocrine glands
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12
Q

endocrine gland

A

internal secreting

ductless

hormones

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13
Q

exocrine gland

A

external secreting and internal secreting

ducted

produce non-hormone products

(sweat, oil, milk)

there is unicellular glands and multicellular gland

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14
Q

unicellular exocrine glands

A

*globlet cells- make proteins*

located in the epithelial linings of intestinal and respiratory tract

produces and secretes mucin which forms mucus

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15
Q

multicellular cellular exocine glands

A

two parts which are the epithelium and secretory cell

  1. epithelium-
    - derived duct
  2. secretory cells
    - makes enzymes for specific glands
    - release exocrine glands by mitosis (holocrine products go with it)
    - merocine
    - apocrine
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16
Q

merocine

A

product makes glands and some go with it

17
Q

apocrine

A

pieces pinched off apical portion of cell

18
Q

FUNCTION OF CONNECTIVE TISSUES

A

binds tissues together, offers support, acts as protective barrier, absorb water and its also a water reservior.

four types of tissues:

  1. connective tissue proper (tendents and ligaments)
  2. catilage (elestic cartilage)
  3. blood (RBC- only fluid tissue in body)
  4. bone
19
Q

poor blood supply =

A

avascular

20
Q

some variations of blood supply are well…

A

vascularized

21
Q

two basic compontents of connective tissue

A
  1. living
  2. non living (extracellular matix)
22
Q

extracellular matrix

A
  1. ground substance - are composed of water proteins and polysacharride
  2. fibers