Anatomy Tissues

Histology

study of tissues and their structures

epithelial tissue

Sheets of tightly packed cells that line organs and body cavities

simple squamous epithelium

single layer of flat cells, Allows passage of materials by diffusion

simple cuboidal epithelium

single layer of cube shaped cells, secretion and absorption

simple columnar epithelium

single layer of tall cells, may have cilia Function: Absorption; secretion of mucus, enzymes, and other substances

stratified squamous epithelium

several layers of flat cells, protects underlying tissues in areas subject to abrasion

stratified cuboidal epithelium

layers of cube shaped cells, protection, may contain glands

stratified columnar epithelium

layers of column-like cells, contains glands, protection, secretion

pseudostratified 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

transitional epithelium

stretches readily and permits distension of urinary organ

connective tissue

A body tissue that provides support for the body and connects all of its parts, contains specialized cells, Ground substance and Fibers

connective tissue proper

loose connective tissue and dense connective tissue, connects and protects

areolar connective tissue

Loose connective tissue, higher in ground substances, Function: wraps and cushions organs

adipose connective tissue

Loose connective tissue, provides insulation for the body

reticular connective tissue

Loose Connective tissue that contains reticular fibers and cells; used to make the framework of major organs

endocrine glands

glands that secrete chemicals called hormones directly into the bloodstream

exocrine glands

Glands that secrete substances outward through a duct

dense connective tissue

contain more fibers and less ground substance, they are: dense regular, dense irregular, elastic

dense regular connective tissue

many collagen fibers arranged it the same direction (tendons, most ligaments)

dense irregular connective

Collagen fibers in many directions, Function: able to withstand tension exerted in many directions;

elastic dense connective tissue

dense regular connective tissue containing a high proportion of elastic fibers, stretchier

fluid connective tissue - Specialized

blood and lymph

supporting connective tissue

cartilage and bone

cartilage tissue

Matrix is a firm gel ground substance, that has chondrocytes, for shock absorption and protection (hyaline, fibrous and elastic)

Four types of tissue

epithelial, connective, muscle, nervous

cardiac tissue

Involuntary, straited and branched muscles, circulates, in heart

skeletal muscle tissue

striated, voluntary, multinucleated

Smooth muscle Tissue

type of involuntary muscle tissue

nervous tissue

neurons and neuroglia

Neurons

nerve cells that receives, integrate, and transmit information.

neuroglial cells

provide physical support, insulation, and nutrients for neurons

Blood

A connective tissue with a fluid matrix called plasma in which red blood cells, white blood cells, and cell fragments called platelets are suspended.

Lymph

lymph tissue (fluid collected from organs that is filtered and returned to the circulatory system)

Bone

Mineralized (calcium & phosphate) connective tissue, makes up the skeleton

hyaline cartilage

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

elastic cartilage

cartilage with abundant elastic fibers; more flexible than hyaline cartilage (found in ear and epiglottis)

Fibrocartilage

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