BIO midterm Tissue Organization Flashcards
4 tissues in the human body
epithelial tissue
connective tissue
muscular tissue
nervous tissue
Epithelial tissue
One surface exposed to fluid of air
cellular
lacks blood vessels
cells stay on a basement membrane
tissue layers (two types)
simple =one layer thick
stratified= multiple layers
ex:skin
shapes of the tissue
squamous: flat
ex: lung tissue
cuboidal: cube shaped equal in shape
ex: kidney tubules
columnar: column shaped
ex: bladder
transitional
cells on a smooth base membrane with the ability to expand/contract
ex: vagina
Pseudostratified ciliated columnar
stratified layer of columnar
ex: lining of respiratory tract
Glandular Epithelial Tissue
Exocrine glands :sweat
endocrine glands : brain puss
mammary gland : booby
oil producing gland : clogged pore
exocrine gland: (yes we love exo)
glands with ducts and 2 regions secretory WITH ducts
ex: sweat
endocrine glands (no we don’t)
Gland WITHOUT ducts secretions are transported bu venous return- connected to the heart
ex: pituitary gland
Connective tissue
Fibroblast: collagen,elastin,reticular fibers
Adipocyte: cell
Macrophages: fat cell
loose connective tissue
adipose, areolar, reticular
dense connective tissue
elastic, irregular, regular
supporting connective tissue
elastic, fibrocartilage, hyaline
bone: compact/ lamellar
spongy/cancellous
Fluid connective tissue
blood, derived from;
lymph cerebral spinal fluid and synovial fluid
other connective tissue
mesenchymal cells: repair when injured
leukocytes: white blood cells rid bacteria and foreign material
mast cells:
heparin inhibit blood clotting
histamine: increase blood flow
Areolar: Loose connective tissue is located:
Areolar: between skin and muscles (subcutaneous layer) bind vessels and nerves
Adipose (fat) loose tissue is located
between skin and muscle and organs
Dense REGULAR connective tissue located:
muscle tendons, strength linear flexibility
Dense IRREGULAR connective tissue located:
found in dermis of skin resist tension all directions
Elastic connective tissue located:
vessels of the heart
Functions of bone tissue
Rigid support
protect underlying organs
help movement
blood form in red marrow
store chemical Ca++
Bone cells
Osteocyte:mature
Osteoblast: immature
Osteoclasts: bone destroys cells
portions (two types)
Organic portion: collagen
inorganic portion: hydroxyapatite
bones contain alot of
WATER!!!
