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27 Cards in this Set

  • Front
  • Back
Epithelial tissue
-tightly fitted cells to make a sheet of cells.
-The sheets attatch to one another by a basement membrane.
-Forms the outer layer of skin and linings of tracts.
-Protection, absorbtion, secretion & sensation.
-1 or 2 layers in glands.
Exocrine glands
secrete onto epithelial surface, through a duct.
Endocrine glands
release hormones into interstitial fluid (tissue fluid) or blood.
Connective tissue
-threadlike, microscopic fibers scattered thruout a matrix: thin gel of polysaccarides that the cells secrete.
-3 types of fibers:
collagen, elastic, reticular
Collagen fibers
-collagen: group of fibrous proteins
very tough
Elastic fibers
stretched by force & returns to original
Reticular fibers
thin branched fibers that form networks connecting tissues.
connective tissue cells that produce fibers
Loose connective tissue
-thin filling b/t body parts
-nerves, bv, & muscles are wrapped in this tissue.
Dense connective tissue
-found in the skin
-strong & less flexible than loose connective tissue.
-Tendons & Ligaments
-dense connective tissue
-cords that connect muscles to bones
-dense connective tissue
-cables that connect bones to one another
Elastic connective tissue
-stretch and return to original
-lung tissue and artery walls
Reticular connective tissue
interlacing reticular fibers.
adipose tissue
store fat and release it when feul is needed
-vertebrate skeletal tissue
-contains calcium phosphate
-large central marrow cavity
Blood & lymph
circulating tissues
Muscle tissue
3 types:
skeletal, cardiac, smooth muscle
skeletal muscle
large muscle masses attatched to the bone
cardiac muscle
main tissue of the heart
smooth muscle
walls of organs and tracts
Nervous tissue
controls muscles & glands
-neurons: receiving & transmitting signals
-glial cells: support & nourish the neurons
-cell body: nucleus
-Dendrites: cytoplasmic extensions specialized for receiving impulses
-axon: transmits nerve impulses
ability to maintain body temperature w/in certain limits
body temp based on environment. heat comes from sun. survive on less food and convert energy to growth & reproduction.limits activity.
constant body temp. active. heat comes from metabolic processes. hypothalamus reg. temp.
body temp falls:
-sweating reduced
-blood away from skin
-muscle activity (shiver)

body temp rises:
-blood to skin, so heat loses
-muscle activity reduced.