tissue hell

epithelial tissue

A body tissue that covers the surfaces of the body, inside and out

simple squamous epithelium

- single layer of flattened cells

functions of simple squamous epithelium

Diffusion, filtration, gas exchange, reduces friction

Locations of simple squamous epithelium

- lining the lung air sacs (alveoli), lining of blood vessels, lining of heart

- When lining blood and lymphatic vessels, the epithelium is called an endothelium

simple cuboidal epithelium

single layer of cube shaped cells

functions of simple cuboidal epithelium

Absorption and secretion

Locations of simple cuboidal epithelium

kidney tubules, ducts of exocrine glands

simple columnar epithelium

rectangles

functions of simple columnar epithelium

Absorption, secretion, protection; cilia move substances

locations of simple columnar epithelium

- Nonciliated form may have microvilli and goblet cells

- Nonciliated examples: most of digestive tract = from stomach to anal canal

- cilated ex: uterine tube

transitional epithelium

Cells change shape, transition from flat to cuboidal

functions of transitional epithelium

- Tolerates repeated cycles of stretching and recoiling and returns to its previous shape without damage

Locations of Transitional Epithelium

lining of urinary bladder, ureters, part of urethra

- not part of stomach, it has folds

stratified epithelium

multiple layers of cells, usually more for protection

stratified squamous epithelium

multiple layers of flat cells

function of stratified squamous epithelium

- functions in protection from friction

- keratinized type reduces water loss

location of stratified squamous epithelium

epidermis of the skin, esophagus, and lining of vagina

stratified cuboidal epithelium

multiple layers of cube shaped cells

function of stratified cuboidal epithelium

Protection and secretion, usually in smaller basic spaces

location of stratified cuboidal epithelium

lining of sweat gland ducts

mammary gland

salivary gland ducts

stratified columnar epithelium

tissue that consists of two or more layers of column-like cells

function of stratified columnar epithelium

Protection and secretion, more extensive

location of stratified columnar epithelium

part of male urethra, ducts of some salivary glands

Pseudostratified cuboidal function

Secretion, absorption, and protection; appears multilayered but is actually one layer

location of pseudostratified cuboidal

respiratory tract lining = Trachea

dense connective tissue

dense regular, dense irregular, elastic

dense regular connective tissue

Provides strong attachment and resists pulling in one direction

location of dense regular connective tissue

tendons, most ligaments, aponeuroses

random flowchart note of dense regular connective tissue

Dense connective tissue -> dense regular CT -> (tendons, ligaments, organ)

dense irregular connective tissue

Provides strength and resists stress from many directions

- Coarse irregularly arranged bundles of collagen fibers with some elastic and reticular fibers

location of dense irregular connective tissue

dermis of the skin; pericardium

flow chart of dense irregular

Dense irregular CT -> (Dermis, pericardium)

elastic connective tissue

Allows stretching and recoil due to elastic fibers

location of elastic connective tissue

Found in epiglottis, external ear, and ear canal

loose connective tissue

areolar, adipose, reticular

areolar connective tissue

functions to cushion organs, provides support

location of areolar connective tissue

widely distributed under epithelia of body

- found within dermis, between muscles, around bloodvessels, nerves, and around joints

adipose tissue

Functions to absorb shock, insulates, stores energy

location of adipose connective tissue

Found deep in skin, breasts, padding around kidneys

reticular connective tissue

Forms a supportive framework for cells and organs

location of reticular connective tissue

bone marrow and lymph nodes, spleen, and liver