AnatomyChp5

• epithelial
• connective
• muscle
• nervous

in the embryonic period

• endoderm
• mesoderm
• ectoderm

• membranous
• glandular

• protection-skin
• sensory functions-skin, nose, eye, ear
• secretion-hormones,mucus,digestive juices
• absorption-exchange of gases between air +lungs
• excretion-lining of kidney tubes

• squamous
• cuboidal
• columnar
• pseudostratified columnar

arrangement of epithelial cells in a single layer

epithelial cells layered one on another

the noncellular layer of adhesive, permeable material that connects the epithelial tissue to the underlying connective tissue.

• one layer of flat, scalelike cells.
• func: absorption by diffusion
• ex. air sacs of lungs, surface layer of pluera, pericardium, and peritoneum

• one layer of cuboidal cells resting on a BM
• func: sercretion and absorption
• ex. ducts and tubes of many organs

• single layer of cells many of which have modified structure(goblet cells, cilia, microvilli)
• func: protection, secretion, absorption, moving of mucus
• ex. surface layer of the mucous lining of the stomach, intestines and part of the resp. tract

• although appearing stratified, they have one layer of cells touching the BM
• func: protection
• ex. found lining air passages of resp sys., and the urethra in men

• multiple layers of flattened squamous cells at the free or outer layer can be keratinized and nonkera
• func: protection
• ex. surface of the mucous lining of mouth, esophagus, vagina(non-keratinized)
• surface of skin(keratinized)

• 2 or more rows of low cuboidal cells arranged randomly over a BM
• func: protection
• ex. ducts of sweat glands, lining of pharynx, covering of portion of epiglottis.

• a unique arrangement of differing cell shapes in a stratified or layered epithelial sheet
• func: permits stretching
• ex. lining of urinary bladder and ureters

• endocrine
• exocrine

• fingerlike projections that increase the surface area and help absorb nutrients
• found in the intestines

• the material between the cells.
• made up of proteins and proteoglycans

• ductless glands, they discharge their secretion products(hormones) directly into blood or intestinal fluid.
• ex. pituitary, thyroid, adrenal glands

• discharge their secretion products into ducts
• ex. salivary glands

connective tissue

connective tissue

hairlike projections of cells. found in the lining of the respiratory tract

connects, supports, transports and protects

• fibrous
• bone
• cartilage
• blood

protection, insulation, support, and food reserve

connective tissue that arises during embryonic development from stem cell tissue

• epithelial(most common)-composed of epothelial tissue and an underlying layer of connective tissue
• connective tissue- composed exclusively of connective tissue no epithelial cells present

• cutaneous(skin)-covers body surfaces exposed to the external environment
• serous(parietal,visceral,pleura,peritoneum)-lines cavities that are not open to the external environemt. composed of two layers of tissue.
• mucous-epithelial membranes that line body surfaces opening directly to the exterior.

synovial-line the spaces between bones and joints.

mammary glands

• hyaline- most prevalent
• fibrocartilage
• elastic

• most prevalent type.
• found in support rings of resp. tubes and covering the ends of bones.
• low amounts of collagen

• strongest and most durable type.
• located in intervertrebral disks.
• filled with a dense packing of collagen fibers

• contains few collagen fibers, but large number of fine elastic fibers that give it high degree of flexability.
• found in external ear, and larynx

• Extracellular matrix(ECM)-determine it's physical characterisitcs
• consist of fluid, gel or solid matrix with or without extracellular fibers(collagenous, reticular, and elastic)
• proteoglycans- thicken and hold together the tissue