AP 150 Lab 2: Histology (study of tissues)

simple squamous epithelium

simple squamous epithelium

Single layer of flattened cells;

Forms walls of capillaries & air sacs of lungs;

simple cuboidal epithelium

single layer of cube shaped cells

Function: secretion and absorption

Location: Kidney tubules; ducts and secretory portions of small glands, ovary surface.

simple columnar epithelium

Function: Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus (or reproductive cells) by ciliated action.

Location: nonciliated type lines most of the digestive tract (stomach to anal canal), gallbladder and excretory ducts of some glands; ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus.

pseudostratified (ciliated) columnar epithelium

tissue that consists of a single layer of irregularly shaped and sized cells that give the appearance of multiple layers; found in ducts of certain glands and the upper respiratory tract

stratified squamous epithelium

Function: protects underlying tissues in areas subject to abrasion

Location: nonkeratinized type forms the moist lining of the esophagus, mouth, and vagina; keratinized type forms the epidermis of the skin, a dry membrane.

areolar connective tissue

Function: wraps and cushions organs

Location: widely distributed under epithelia of body

adipose connective tissue

acts as a storage depot for fat

reticular connective tissue

forms supporting tissue in walls of liver and spleen

dense regular connective tissue

Function: attaches muscles to bones or to muscles; attaches bones to bones; withstands great tensile stress when pulling force is applied in one direction

Location: tendons, most ligaments, aponeuroses

dense irregular connective tissue

Function: able to withstand tension exerted in many directions; provides stuctural strength.

Location: Fibrous capsules of organs and of joints; dermis of the skin; submucosa of digestive tract.

hyaline cartilage

Most common type of cartilage; it is found on the ends of long bones, ribs, and nose

Fibrocartilage

cartilage that contains fibrous bundles of collagen, such as that of the intervertebral discs in the spinal cord.

elastic cartilage

cartilage with abundant elastic fibers; more flexible than hyaline cartilage. Locations include external ear and epiglottis.

compact bone connective tissue

contains few spaces and is the strongest form of bone tissue

blood connective tissue

fluid extracellular matrix used to transport substances throughout the body.