human tissues

four types of tissue

epethilial,connective,nervous,muscle

tissue

a group of similar cells that work together to perform a specific function in the body.

epethilial tissue

covers all body surfaces in and out. main glandular (glands) tissue. Attached to underlying connective tissue at the basement membrane.

epethlial tissue

has no vascular system-no blood supply. cells reproduce rapidly results in rapid healing(scarring).cells tightly packed together.

Functions of Epethilial tissue.

Secretion, absorption, protection, excretion, senses.

simple

single layered

Stratified

Multiple layers.

Squamos

Flat diffusion and filtration

Cuboidal

Cubed. secretion absorption and protection

Columnar

column (rectangle). abroption secretion protection.

Simple Squamos

Air sac & lining of lungs, blood vessels. capillaries.

Simple cuboidal

Kidneys tubules, covering ovaries and ducts.

Simple columnar

Contains goblet cells that secrete mucus. Can have microvilia to increase surface area. lining of small intestine, oviducts, digestive tract, and uterus. Absorbs nutrients.

Goosebumps

Arector pill muscle contracted.

Blisters form

Dermis pulls away from the epedermis.

Psuedostratified Columnar

Appears stratified but a single layer of cells with nuclei at different levels. Can have cilia & goblet cells which secrete mucus. Secretion and cilia-aided movement. Lining air passages & tubes of reproductive system.

Transitional Epethilium

Stretchable. Blocks diffusion. In urinary bladder.

Glandular Epethilium

Cells specialized to secrete substances. Make up the glands. Salivary, sweat, hormones.

psuedostratified ciliated columnar

lining of trachea, sweeps impurities towards throat.

Simple cuboidal

lining of kidney tubules, various glands. Absorbs molecules.

stratified squamos

Lining of nose, mouth, esophagus, anal canal, vagina. Protects.

Connective tissue

Most abundant tissue in body binds structure together. Provides protection, framework, fills space, stores fat, produces blood cells, fights infection.

Connective tissue

Composed of more scattered cells in matrix. Made up ground substance and fibers. Most have a good blood supply

Types of cells in connective tissue

Macrophages, fibroblasts, mast cells

fibroblasts

produce fibers

Mast cells

prevents clots

Macrophages

consumers

Collagenous

in bones, ligaments, tendons

elastic

ears, vocal cords

Loose connective tissue or Aerolar tissu

Binds underlying organs to skin and each other. Forms delicate thin membranes throughout the body.

Adipose tissue (fat)

Protective cushion, Insulation to preserve body heat, stores heat.

Fibrous connective tissue

forms a tendon

tendons

muscle to bone

ligament

bone to bone

Dense fibrous connective tisue

has collagenous fibers closely packed together. In dermis of skin tendons ligaments. Functions in support.

Cartilage

type of dense connective tissue

cartilage cells

chondroyctes

Hyaline cartilage

Covers the end of joints. Nose respitrory passages, serves as padding

Elastic cartilage

external ear and larynx.

Fibrocartilage

shock absorbing. between vertabrae.

bone tissue

osseous

smooth muscle tissue

involuntary

cardiac muscle tissue

involuntary

skeletal muscle sytem

voluntary.

neurons

transmit signals

neuroglia

support cells

fascia

supports your muscles

meninges

surrounds your brain

what cellls in epethilium are responsible for diffusion and filtration.

squamos

type of cartilage found in your nose

ihyaline cartilage

which type of epethilial tissue is found in the lining of lungs and blood vessels

simple squamos

keratinocytes

is a tough, waterproof material found in the upper layers of some stratified squamous epethilium

ground subtance

surrounds cells and makes up most of the volume of connective tissue

bone

has numberous fibers in the matrix that are calcified because of mineral deposits with collagen fibers that give strength, rigidity, and resists shattering

type of cells in glands

cuboidal

the type of protein fiber that is branched and wavy, after stretching it will return to its original length

elastic

study of tissues

histology