unit 2 histology

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histology

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86 Terms

1
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Tissues

A group of cells that perform the same function

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Tissues compose

organs

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organs are typically made of ________ tissues

multiple

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histology is

the study of tissues

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<p>Epithelial tissue functions</p>

Epithelial tissue functions

covering, lining, secreting

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<p>examples of epithelial tissue</p>

examples of epithelial tissue

outer layer of skin, intestines, respiratory tract

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<p>connective tissue function</p>

connective tissue function

binding and support

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<p>connective tissue example</p>

connective tissue example

adipose tissue, cartilage, bone, blood

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<p>functions for muscle tissue</p>

functions for muscle tissue

functions for contraction for movement

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<p>example for muscle tissue</p>

example for muscle tissue

skeletal muscle

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<p>functions of the nervous tissue</p>

functions of the nervous tissue

transmit signals

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<p>example of nervous tissue</p>

example of nervous tissue

brain, spinal cord, nerves

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<p>what is this tissue?</p>

what is this tissue?

Epithelial tissue

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<p>What is this tissue?</p>

What is this tissue?

Muscle tissue

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<p>what is this tissue</p>

what is this tissue

connective tissue

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<p>What is this tissue?</p>

What is this tissue?

Nervous Tissue

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Ehlers-Danlos Syndrome is a

Mutation affecting the synthesis of connective tissue

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Ehlers-Danlos Syndrome Symptoms

Hyper mobility, loose unstable joints that dislocate easily, extreme fatigue, skin that easily bruises, digestive problems

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<p>Epithelial tissues Greek roots meaning (EPi)(Thele)</p>

Epithelial tissues Greek roots meaning (EPi)(Thele)

Above, nipple

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<p>functions</p>

functions

to cover, line, and form secretions

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<p>skin,scalp,intestine epithelial cells are frequently replaced  how often?</p>

skin,scalp,intestine epithelial cells are frequently replaced how often?

skin-30 days, scalp-3 days, intestines, 6 hours

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<p>do epithelial tissues have blood vessels? how do they acquire nutrients?</p>

do epithelial tissues have blood vessels? how do they acquire nutrients?

No blood vessels, rely on diffusion to acquire nutrients

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<p>Epithelial tissue layers</p>

Epithelial tissue layers

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<p>single layer</p>

single layer

simple

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<p>multiple layers</p>

multiple layers

stratified

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<p>appears stratified, but is 1 layer</p>

appears stratified, but is 1 layer

pseudostratified

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Flat, scale like

Squamous

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<p>What is this</p>

What is this

Simple Squamous

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<p>what is this</p>

what is this

stratified squamous

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cuboidal

cube shaped

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<p>what is this</p>

what is this

simple cuboidal

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<p>what is this</p>

what is this

stratified cuboidal

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columnar

rectangular

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<p>what is this</p>

what is this

simple columnar

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<p>what is this</p>

what is this

pseudostratified columnar

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<p>Squamous epithelial cells function</p>

Squamous epithelial cells function

regulate the passage of substances into other tissues, can be a protective barrier against microorganisims

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<p>Location in Body</p>

Location in Body

-blood vessels, vody cavities, outer layer of skin

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<p>Cuboidal Epithelial Cells Function</p>

Cuboidal Epithelial Cells Function

Aide in secretion, excretion, and absorption

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<p>Located in the collecting ducts of</p>

Located in the collecting ducts of

Kidney,pancreas, salivary glands, sweat glands

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<p>Columnar epithelial cells function</p>

Columnar epithelial cells function

secretion and absoprtion

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<p>Many have small hairlike projections called</p>

Many have small hairlike projections called

cillia

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<p>Increase _______________ of organs</p>

Increase _______________ of organs

surface area

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<p>Location in the body</p>

Location in the body

stomach, pharynx, respiratory tract

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connective tissue

the main functions of connective tissues are to bind and support structures in the body

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connective tissues are composed primarily of two types of fibers

Collagenous fibers, elastic fibers

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Collagenous Fibers

Long thick fibers made of protein collagen (Very rigid and has high tensile strength)

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Elastic Fibers

composed of protein elastic, very flexible, found in body where flexibility is required

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what is this

collagen

<p>collagen</p>
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<p>what is this</p>

what is this

elastin

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both collagen and elastin are broken down by

sunlight (UV/X rays PNETRARATE skin) Nicotine (Tabacco smoke)

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Why anti aging marketing is fake

Collagen is a protein, not lipid soluble, skin can’t absorb it through a cream. Or- a supplement, because your stomach acid would denature the proteins.

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<p>Loose vs Dense Connective tissue</p>

Loose vs Dense Connective tissue

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<p>Loose connective Tissue</p>

Loose connective Tissue

Mixture of collagen and elastic fibers, tissue helps attach organ or tissue to another

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<p>examples of loose connective tissue</p>

examples of loose connective tissue

blood, adipose

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<p>What is this </p>

What is this

Loose connective tissue

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<p>What is this</p>

What is this

dense connective tissue

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<p>It is mostly__________________ fibers</p>

It is mostly__________________ fibers

collagenous

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<p>Connects_______ to ______ and is very strong</p>

Connects_______ to ______ and is very strong

muscle, bone

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<p>examples</p>

examples

tendons, ligaments

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<p>WHat is this</p>

WHat is this

Hyaline Cartilage

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<p>hyaline cartialage is the ________ common</p>

hyaline cartialage is the ________ common

most

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<p>it is composed of more______ than____, making it</p>

it is composed of more______ than____, making it

collagen, elastin, flexible but firm

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<p>examples</p>

examples

nose, bone coverings

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<p>What is this</p>

What is this

Elastic Cartilage

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<p>Contain primarily</p>

Contain primarily

elastin

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<p>Very</p>

Very

flexible

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<p>examples</p>

examples

ears, vocal cords

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<p>What is this</p>

What is this

Fibrocartilage

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<p>It contains almost pure</p>

It contains almost pure

collagen

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<p>It is very</p>

It is very

tough

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<p>Used for _______ and __________  ___________________</p>

Used for _______ and __________ ___________________

padding, shock, absoprtion

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<p>examples</p>

examples

knees, vertebral discs\

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<p>what is this</p>

what is this

adipose tissue- known asfat cells

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<p>it does what</p>

it does what

store lipids in droplets that accumulate indefinitely

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<p>what is this</p>

what is this

bone

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<p>Most______ connective tissue</p>

Most______ connective tissue

rigid

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<p>Contains primarily collagenous fibers hardened by</p>

Contains primarily collagenous fibers hardened by

minerals

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<p>what is this</p>

what is this

blood

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<p>connective tissue that is not composed of</p>

connective tissue that is not composed of

fibers

80
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<p>helps maintain _________ in the body</p>

helps maintain _________ in the body

connections

81
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<p>what is this</p>

what is this

hyaline cartilage

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<p>what is this</p>

what is this

elastic cartilage

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<p>what is this</p>

what is this

fibrocartilage

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<p>what is this</p>

what is this

adipose

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<p>what is this</p>

what is this

bone

86
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<p>what is this</p>

what is this

blood