Tissue Level

zoeleow5's version from 2015-09-11 01:41

Section 1

Question Answer
Epithelial tissueSheets of cells that cover exterior surfaces of the body; Lines internal cavities and passageways; provides body protection from physical, chemical and biological damage.
Connective tissueBinds cells and organs together; Provides protection for organs and defends against microbial invasion; Stores energy reserves such as lipids; Dispersed in a matrix.
Muscle tissueHas Skeletal, cardiac and smooth types; Responds to stimulation and contracts to provide movement.
Nervous tissueSends and receives electrochemical signals that provide the body with information.
Neuronsallows propagation of electrochemical signals, in the form of nerve impulses, that communicate between different regions of the body.
NeurogliaSupports neutron cells, provides protection and nutrient supply.

Section 2

Question Answer
AvascularLack of blood vessels; Capillaries do not reside within epithelial cell tissues.
SensoryEndings of neutrons present within epithelial cell tissues; Perceives external stimulus
Gliding surface layerSlough off and glide in order to replace dead cells; Allows epithelial cells to maintain closed barrier to external environment.
TransitionalMulti-layered epithelia are able to stretch
Tight BarrierHeld together more tightly than other cells; Aids cells in withstanding mechanical stress.

Section 3

Question Answer
Simple Squamous Epithelialooks like thin scales; nucleus is flat, horizontal and elliptical; present where there is rapid passage of chemical compounds because of thinness; eg. alveoli
Stratified Squamous EpitheliaTop layer covered with dead cells, filled with keratin; Found in lining of mouth cavity.
Simple Cuboidal EpitheliaBox shape; Secretes and absorbs molecules; Found in lining of kidney tubules and ducts of glands.
Stratified Cuboidal EpitheliaFound in certain glands and ducts; not usually in Human body.
Simple Columnar EpitheliaColumn-shaped and elongated nucleus located in basal ends of cells; Absorbs and secretes molecules; Found in lining of digestive system and female reproductive tract.
Stratified Columnar EpitheliaFound in certain glands and ducts; Not usually in Human body.
Endocrine glandsDuctless gland that releases secretions into surrounding tissues; eg. anterior pituitary, thymus.
Exocrine glandsSecretions leave directly/indirectly to external environment through a duct; Secretes mucous, sweat, saliva, breast milk.
Pseudostratified Columnar EpitheliaSingle layer of irregularly shaped and differently sized columnar cells; Are heterogeneous epithelia as it includes additional types of cells in them; Found in respiratory tract.

Section 4

Question Answer
Hyaline connective tissueProvides support with flexibility
Fibrocartilage connective tissueProvides compressibility and absorbs pressure
Elastic cartilageProvides firm but elastic support

Section 5

Question Answer
Fluid connective tissueLymph and blood; Various specialised cells circulate in watery fluid containing salts, nutrients, and dissolved proteins.
Connective tissue properLoose and dense connective tissue; Adipose, areolar, and reticular; Regular and irregular elastic.
Supporting connective tissueBone and cartilage; In hyaline, fibrocartilage and elastic cartilage.

Section 6

Question Answer
EpidermisDoes not contain blood vessels and nerves; Responsible for skin cell renewal, is the barrier between internal structures and external environment, prevents microorganisms, water and other substances from entering body, protects skin from UV and other pollutants.
DermisHas thin network of capillaries, and contains nerves; Provides skin with extensibility, strength firmness and elasticity; Helps diffuse oxygen and nutrients to outer layer of skin; Has antibodies to fight microbes and hazardous substances; Initiates inflammatory process during skin injury by increasing blood to aid immune cells navigate.

Section 7

Question Answer
Serous membraneThin membrane that surrounds organs; attaches organ to body; has a parietal and visceral surface
Mucous membraneLines passageways, lubricates, protects, and aids in absorption/secretion.
Cutaneous membraneIs the skin; Waterproof, thick, and dry.
SynovialJoints; produces synovial fluid for lubrication.