epithelial tissue

Simple

Epithelium has only one layer of cells

Stratified

Epithelium has two+ layers of cells

Squamous

epithelia thin flat cell

Cuboid

Epithelia height equal to their width

Transitional

Epithelia changes shape. found in bladder

Columnar

The epithelia height is usually 3-4 times their width

Simple Squamous

lungs, heart, and blood vessels, most delicate tissue

A single layer of thin/fried egg-shaped cells.

Simple Cuboidal

Kidney tubules and liver, and thyroid glands, and other glands

Single layer of cube-shaped cells.

Simple Columnar

Stomach and intestines

Single layer of cells, in columns.

Pseudostratified Ciliated Columnar

Found in the respiratory tract, lining nasal cavity

Single layer of cells arranged in columns that almost look like , trachea, bronchi multiple layers. multiply cell types

Stratified Squamous

Skin, oral cavity, esophagus, and vaginal

contains keratin

Multiple layers of flat egg-shaped cells.

stratified columnar

Rare. Pharynx, epiglottis, mammary glands, saliva glands, urethrua, anus

serous glands

secrete watery fluids rich in enzymes, like amylase

mucous glands

secrete glycoproteins called mucins that absorb water to form mucus

mixed exocrine glands

capable of both serous and mucous secretions, secrete both

merocrine/eccrine/vesicular secretion

molecules encapsulated in vesicles are released in extracellular matrix by vesicular transport or exocytosis

salivary gland

apocrine secretion

part of the cell breaks off to release secretion

holocrine secretion

the whole cell breaks down or explodes to release its contents (wholocrine= whole cell lost)

release sebum

apocrine sweat glands

found in axilla, anal canal, and around nipples.

produce odoriferous secretion and are sensitive to sex hormones

use merocrine secretion

eccrine sweat glands

found all over and produce sweat used for cooling

use merocrine secretion