Chapter 4- Histology

Histology

the study of tissue

simple epithelium

single layer of epithelial cells

stratified epithelium

multiple layers of epithelial cells

squamous

flat, wide, irregular cells with flat nucleus, “squash”

cuboidal

tall as wide, “cube”, cells, nucleus in the center

columnar

slender, taller than wide, nucleus basal, “column”

what are the four types of tissue

epithelial, connective, muscle, nervous

function of epithelial tissue

protection, selective permeability, secretions, sensations

what tissue is is

simple squamous epithelium

what is the structure of simple squamous epithelium

1 layer, flat

what is the function of the simple squamous epithelium

rapid diffusion

where is the simple squamous epithelium located

alveoli, capillaries, endothelium of vessels, serous membranes of body cavities

What tissue is this

simple cuboidal epithelium

what is the structure of simple cuboidal epithelium

1 layer of cube cells

what is the function of simple cuboidal epithelium

absorption, secretion

where is the location of simple cuboidal epithelium

thyroid, kidney, glands

what tissue is this

simple columnar epithelium with nonciliated microvilli

what is the structure of the simple columnar epithelium

1 layer, column shaped cells, microvilli to increase surface area

what is the function of the simple columnar epithelium

absorption

where is the simple columnar epithelium located

digestive tract

what tissue is this

simple columnar epithelium ciliated

what is the function of the simple columnar epithelium ciliated

movement of mucus and oocyte

what is the structure of simple columnar epithelium ciliated

1 layer, column shaped cells, cilia

where is the simple columnar epithelium ciliated located

larger bronchioles, uterine tube

what tissue is this

pseudostratified columnar epithelium ciliated

what is the structure of pseudostratified columnar epithelium ciliated

single layer, cells look like layers but are scattered

what is the function of pseudostratified columnar epithelium ciliated

moves mucus

where is the pseudostratified columnar epithelium ciliated located

respiratory tract

what tissue is this

stratified squamous epithelium nonkeratinized

what is the structure of stratified squamous epithelium nonkeratinized?

2+ layers of flat squished cells

what is the function of stratified squamous epithelium nonkeratinized

protection from abrasion

where is the stratified squamous epithelium nonkeratinized location

epidermis of skin

what tissue is this

stratified squamous epithelium keratinized

what is the structure of stratified squamous epithelium keratinized?

2+ layers, flat shaped

what is the function of stratified squamous epithelium keratinized?

abrasion, secretions

where is the stratified squamous epithelium keratinized location

epidermis of skin

what is the structure of stratified cuboidal epithelium

2 layers, cube shaped

what is the location of stratified cuboidal epithelium

sweat glands

what is the function of stratified cuboidal epithelium

secretion, abrasion

what is the structure of stratified columnar epithelium

2-3 layers, column shaped cells

what is the location of stratified columnar epithelium

salivary glands, male urethra

what is the function of transitional epithelium

distention

what is the structure of transitional epithelium

multiple cells of all varying shapes

where is the location of transitional epithelium

uterus, urinary bladder, part of male urethra

osteo-

bone

adipo-

fat

fibro-

fibers

chrondro-

cartilage

-cyte

cell

-blast

build

-clast

destroy

what tissue is this

areolar connective tissue

what is the structure of areolar connective tissue

collagen, elastic fibers, scattered fibroblasts, blood vessels

what is the function of areolar connective tissue

packing and attachment

where is location of areolar connective tissue

subcutaneous skin, surrounds nerve and muscle cells, outer layer of blood vessels

what is the structure of adipose ct

lipids, adipocytes squished together

where is the location of adipose ct

subcutaneous layer of the skin

what is the structure of reticular ct

fibroblasts, reticular meshwork, leukocytes

what is the function of reticular ct

lymphatic organs

where is the location of reticular ct

spleen, lymph nodes, bone marrow

what tissue is this

dense regular connective tissue

what is the function of dense regular connective tissue

strength and flexibility

what is the structure of dense regular connective tissue

densely packed, parallel arrays of collagen, fibroblasts in between layers

where is the location of dense regular connective tissue

tendons, ligaments

what tissue is this

dense irregular connective tissue

what is the structure of dense irregular connective tissue

collagen in many directions, fibroblasts among fibers

what is the function of dense irregular connective tissue

tensile strength in many directions

where is the location dense irregular connective tissue

dermis, capsules around organs, outer layer of muscles and nerves

what tissue is this

elastic connective tissue

what is the structure of elastic connective tissue

elastic fibers, fibroblasts in between

what is the function of elastic connective tissue

stretch and recoil

where is the location of elastic connective tissue

vocal chords,large medium sized ovaries

what tissue is this

hyaline cartilage

what is the structure of hyaline cartilage

smooth, scatter chondrocytes

what is the function of hyaline cartilage

smooth surface, support soft tissue

where is the location of hyaline cartilage

fetal skeleton, articular, cartilage, trachea, larynx, nose

what tissue is this

fibrocartilage

what is the structure of fibrocartilage

parallel collagen fibers, large chondrocytes

what is the function of fibrocartilage

resists compression

where is the location of fibrocartilage

intervertebral discs, pubic symphyses, menisci

what tissue is this

elastic cartilage

what is the structure of elastic cartilage

elastic fibers in web like mesh

what is the function of elastic cartilage

structure and shape with flexibility, closely packed lucumae

where is the location of elastic cartilage

ear epiglottis

what tissue is this

compact bone

what is the structure of compact bone

osteons, lamellae, central canal

what is the function of compact bone

support, protection, lever for skeletal muscles, calcium storage

where is the location of compact bone

bone

what is the structure of spongey bone

lamellae, no central canal, bone marrow

what is function of spongy bone

compact bone, hemopoisis

where is spongey bone located

middle layer of flat bones, inner layer among long bones

what tissue is this

skeletal muscle

what is the structure of skeletal muscle

cylindrical and long, multinucleated, voluntary

what is the function of skeletal muscle

movement of skeleton or skin

what is the location of skeletal muscle

attached to bone

what tissue is this

cardiac muscle

what is the structure of cardiac muscle

branded, y-shaped, striated, involuntary, intercalated dics

what is the function of cardiac muscle

heart beat

what is the location of cardiac muscle

myocardium

what tissue is this

smooth muscle