Anat-1 Flashcards
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Tissue
Group of similar cells
Primary types of Tissues
Epithelial Tissue
Connective Tissue
Muscle Tissue
Nervous Tissue
Epithelial Tissue Function
lines body surface and forms glands
Apical Surface
(unattached) faces the exterior or a lumen
Basal Surface
(attached) achored to extracellular fiber-bsal lamina
Epithelial Cell Characteristics
cells fit closely together forming sheets (desmosomes+tight junctions)
Epithelial Cell Characteristics
Avascular( no blood vessels)
Epithelial Cell Characteristics
has a high capacity to regenerate
Connective Tissue Function
Supports other tissues
Connective Tissue Characteristics
has ground proper and CT proper
CT Proper
Specialized dispersed cells that make a network of protein fibers surrounding cell of the Connective Tissue
Ground Substance
Extracellular material that varies in consistency to structure and function in Ct
CT Categories
CT Proper ( includes stroma of soft organs, tendons and adipose)
CT Categories
Supporting CT (includes bone and cartilage)
CT Categories
Fluid CT ( includes lymph and blood)
Major CT Cell Types
Fibrocyte, Adipocyte, Erythrocyte, Leukocyte, Osteocyte, Chondrocyte
Fibrocyte
mature cells that maintain the matrix of CT proper
Adipocyte
stores fat in the CT proper (fatty tissue)
Erythrocyte
RBC-transports oxygen in blood
Leukocyte
WBC- defends against infections
Osteocyte
mature cells that maintain the matrix of the bone
Chondrocyte
mature cell that maintain the matrix of the cartilage
Muscle Tissue`Definition
Contracts to produce motion
Muscle Tissue Types
Skeletal,
Cardiac,
Smooth.
Skeletal Tissue
Connected to bones through cartilages
Cardiac Tissue
Forms wall of heart
Smooth Tissue
lines hollow organs
Nervous Tissue
rapidly transmits and processes information
Nervous Tissue Characteristics
Contains neurons and neuroglia cells
Membrane
a continuous flat multi-cellular sheet that covers or line a body part
Membrane types
Epithelial Membrane + Mucus Membrane+
Epithelial Membrane def.
made of both epithelial and connective tissue
Epithelial Tissue Char.
has a Cutaneous layer that covers the external surfaces of the body (skin)
Mucus Membrane def.
Lines the cavities that open to the exterior
Mucus Membrane Chara.
Moist membrane that lines the respiratory, digestive and urinary tract.
Serous Membrane Def
lines ventral cavities that are closed to the exterior
Serous Membrane Chara.
simple squamous on a thin layer of areoalr CT.
ex. pleura, pericardium, or peritoneum
Synovial Membrane Def.
lines the inner surface of joint cavities and is made only of connective tissue (no epithelium)
Hemostasis
(Clotting) reduces blood loss from damaged blood vessels
Inflamation
response of the body to injury works to increase number of leukocytes in the tissue to fight against an infection
Inflamation Chara.
provides the 4 cardinals signs of inflammation and Vasodialtion happens
Granulation
Fibrolasts from the surrounding connective tissue fill in the wound with a network of extracellular fibers and blood vessels grow forming granulation
Remodel
Fibers of connective tissue are reorganized to maximize strength and minimize scarring
Regeneration
damage tissue is replace by the same type of tissue
Fibrosis
damaged tissue is replaced by scar tissue
Simple Epithelial
one layer of epi.
Stratified Epithelial
more than one layer of epi.
Sudostratified Epithelial
one layer of epi. that looks like two
Squamous Epithelial Cell
cell flattened at apical surface
Cuboidal Epithelial Cell
cell cube or square-shape at apical surface
Columnar Epithelial Cell
cell column-shaped at apical surface
Epithelial Types
Simple Squamos Epi. Simple Cuboidal Epi. Simple Columnar Epi. Stratified Squamos Epi. Stratified Cuboidal Epi. Stratified Columnar Epi. Pseudostratified Columnar Epi Transitional Epi.
Simple Squamous def
single layer of flat epi. cells found in alveoli, blood vessels or body cavities
Simple Cuboidal Def.
single layered of cubed-shaped cells
Simple Squamous Funtion
Diffusion and secretion
Simple Cuboidal Funtion
Secretion and Absorption
Simple Columnar Def.
single layer of tall cells of oval nuclei, usually with goblet cells
Simple Columnar Funtion
absorption and secretion
Simple Squamous Loc.
cells found in alveoli, blood vessels or body cavities
Simple Cuboidal Loc.
portion of the nephrons of kidney, duct of glands.
Simple Columnar Loc.
lines the digestitve tract and uterine tubers.
Stratified Squamous Def.
many layers and the cells ar the apical surface are flattened
Stratified Squamous Fx.
Secretion
Stratified Squamous Loc.
skin, mouth, esophagous, rectum and vagina
Stratified Cuboidal Def.
two or more layers of cuboidal cells
Stratified Cuboidal Fx.
Secretion
Stratified Cuboidal Loc.
lines ducts of sweat glands
Stratified Columnar Def.
Apical cells are columnar, cell underneath vary in size and shape
Stratified Columnar Fx.
Secretion
Stratified Columnar Loc.
Ducts of salivary glands
Pseudostratified Def.
single layer of cells where not all cells line in apical surface but all cell have contact with the basal lamina.
Pseudostratified Fx.
secretion and propel mucus across cell surface
Pseudostratified Loc.
portions of respiratory tract ( larynx, nasal cavity and trachea)
Transitional Def.
Numerous layers, basal cells appear cuboidal, apical cells very form a dome shape large cuboidal to wide large squamous
Transitional Fx
Stretches to permit distention of urinary organs
Transitional Loc.
Lines ureters, urinary bladder and portions of kidney
Gland
an organ that secreates chemical substances
Endocrine Glands Chara.
Ductless,
secreates hormones,
expels secreation directly into surrounding tissues.
Endocrine Glands Loc
Thyroid, pituitary, and adrenal
Exocrine Glands Chara.
expels secretions onto a surface throughout a duct
Exocrine glands Loc.
Goblet cells (unicellular-no nucleus), sweat and oil (sebaceous), and skin (multi cellular)
Exocrine Glands Branch Classification
Simple or single branched
Compound or branched-out duct
Exocrine glands Shape of secretory portion
Tubular
alveolar
tuboalveolar
exocrine tubular shape
elongated tube shape
exocrine alveolar shape
expanded pocket or sac shape
exocrine tubuloalveolar shape
combination of tube shape with an expanded end.