Name

Description

Locations

Functions`

Picture

Drawing

Simple squamous Epithelium

Single layer of flat cells

Flattened Nuclei

Aka Mesothelium and endothelium

Lining all vessels and heart, Bowman capsule of Kidney, air sacs of lungs, serosea

Thin structure allows for diffusion and filtration, reduce friction when serosea

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Simple Cuboidal Epithelium

Single layer of cube shaped cells, round nuclei

Tubules of kidneys, covers surface of ovaries

Secretion and absorption

 

Simple Columnar Epithelium

Single layer of tall, column like cells, oval nuclei

May be ciliated and contain mucus secreting goblet cells (goblet cells are blue or white)

Lines digestive track from stomach to anal canal

Ciliated variety line uterine tubes

Complex absorption and secretion, ciliated variety in uterine tube propels reproductive cells

Nonciliated

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Stratified Squamous Epithelium

Thick layer of cells with surface cells being flat (squamous) and vassal cells being more cuboidal and mitotically active

Both Karatinized (water resistant) and nonkeratininized variety

Keratinized  dry epidermis of skin

Nonkeratinized  moist lining of mouth, esophagus, vagina

Thick layer provides for physical protection.

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Keratinized

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Nonkeratinized

 

Pseudostratified ciliated columnar epithelium

* the cilia give it away

All cells touch basement membrane, and therefore are simple epithelium, however, some cells are tall and extend to free surface while other cells do not

Nuclei seen at different levels.  This give false stratified appearance 

Apical cells are ciliated and epithelium often contains goblet cells 

Lines trachea, a good portion of the respiratory tree, and the respiratory mucosa of the nasal cavity

Mucus traps inhaled particles, then ciliary action propels it to pharynx (ciliary escalator); air conditioning

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Transitional epithelium

Resembles a stratified squamous epithelium, however, in a non-distended, contracted organ the surface cells appear plump and dome shaped.

Bladder, ureters

Stretches and allows for distension of urinary organ by contained urine

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Areolar Connective Tissue

 

Under basement membrane of epithelims, under skin

Wraps and cushions organs, provides moveable connection between structures without impeding flow of nutrition or defensive cells, supports avascular epithelium

 

Adipose Connective tissue

 `

Hypodermis (under skin)

abdomen, buttocks, thighs, breasts, palms, soles

around Kidneys and heart

Provides padding, heat insulation, energy storage

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Dense regular connective tissue

Tightly packed collagen fibers in a parallel arrangement separated by rows of fibroblasts

Tendons,  ligaments

 

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Dense Irregular connective tissue

NO SLIDE

Collagen fibers run in different directions

able to withstand stress in many different directions

Reticular layer of dermis  gives skin its strength, leather

     

Cartilage

Chondrocytes (cartilage cells) produce extracellular matrix and are found in tiny places called Lacunae 

Avascular

Surrounded by perichondrium (around cartilage)

       

Hyaline Cartilage

(= 3-4 layers of cartilage)  

Glassy pink surface, homogeneous extracellular matrix

Collagen fibers

Trachea, larynx, costal cartilage, articular cartilage

 

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Elastic Cartilage 

^Matrix stains deep blue

Matrix contains elastic fibers in addition to collagen fibers. This provides for increased elasticity

External ear, auditory tube, epiglottis

 

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Fibrocartilage

Matrix contains obvious bundles of collagen fibers, great tensile strength, resists compression, absorbs shock

No perichondrium and is continuous with dense fibrous tissue

Chondrocytes found in short rows or elongated clusters

Intervertebral discs, pubic symphysis, menisci

 

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Bone (Osseous tissue)

Two types of Bone

1. Spongy bone (Cancellous bone)

2. compact bone or dense bone

       

Blood and lymph

         

Muscle Tissue

Skeletal Muscle tissue

Cells (muscle fibers)

-elongated and multinucleated

-nuclei are peripherally located

Striated Voluntary Muscle

Biceps, brachii, pectoralis major

 

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Cardiac Muscle Tissue

Cells (cardiocytes), --centrally located nuclei

-branching orientation  

Intercalated discs

Striated Involuntary muscle

Located only in the heart

 

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Smooth muscle

Cells

-spindle shaped

-single oval nucleus that conforms to the shape of the cell, nuclei may have twisted appearance

Longitudinal looks like a pink river

Nonstriated Involuntary muscle

Blood vessels, digestive track, urinary bladder, uterus, Esophagus

 

 

Nervous tissue

Cells

-Neurons  conducting impulses

-Neuroglia  supporting cells

 

Ability to conduct electrical impulses from one part of the body to another