Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
46 Cards in this Set
- Front
- Back
|
characteristics of epithelial tissue
|
polarity-faces free space (lumen/cavity)
Cellularity-no intracellular matrix specialized junctions-join cells in sheets supported by CT avascular-no direct blood supply regeneration-high mitotic rate |
|
|
Connective tissue of epithelial tissue
|
2 layers; basal lamina and recticular layer
|
|
|
epithelial shapes
|
squamous-flat
cuboidal columnar |
|
|
layers of epithelial tissue
|
simple-one layer
stratified-2 or more layers pseudostratified-all cells touching basement membrane transitional-specialized for stretcting |
|
|
simple squamous epitheilum
|
location: alveoli of lungs, bowmans capsule, loop of henle
function: absorption, secretion |
|
|
simple cuboidal epithelial tissue
|
location: kidney tubules, glands and ducts
Function: absorption and secretion |
|
|
simple columnar epithelial tissue
|
location: uterus, fallopian tube, GI tract from stomach to rectum
function: absorption and secretion |
|
|
stratified squamous epithelial tissue
|
location: skin, oral cavity, esophagus, vagina
Function: protection |
|
|
stratified cuboidal and stratified columnar epithelial tissue
|
location: large ducts
|
|
|
pseudostratified ciliated columnar epithelial tissue
|
location: trachea, bronchi, larynx, nasal passages
Function:mucus secretion from goblet cells |
|
|
transitional epithelial tissue
|
location: urinary bladder, ureter, renal pelvis
Function:distension and expansion |
|
|
characteristics of Connective tissue CT
|
abundant intercellular matrix w/ few cells
wide range of vascularity |
|
|
types of CT
|
CT proper
Cartilage Osseous Vascular CT/blood |
|
|
compounds of CT
|
ground substance
fibers *ground substance+fibers=matrix cells |
|
|
types of Fibers
|
collagenous fibers- white, thick, touch and strong. Stains PINK on slides
Elastic fibers-yellow, thin, and elastic-stains DARK reticular fiber-branched and jagged, stains VERY DARK |
|
|
Fiber arrangement
|
loose-few fibers and many cells
dense-many fibers and few cells |
|
|
cells in CT proper
|
fibroblasts
mast cells mesenchymal cells macrophages |
|
|
fibroblasts
|
make fibers, makes CT proper
|
|
|
mast cells
|
produce histamine and heparin
|
|
|
mesenchymal cells
|
undifferentiated, can become what necessary
|
|
|
macrophages
|
phagocytic
|
|
|
types of CT proper
|
Areolar CT
adipose CT recticular CT dense regular CT dense irregular CT |
|
|
CT proper: areolar CT
|
loose fiber arrangement
equal collagen and elastic fibers location:between and within organ and gland walls, around vessels,anchors epithelia Function:cushion, anchors, packing |
|
|
CT proper: adipose CT
|
location: under skin, around eyeball, kidneys, heart
funct: energy storage, cushion, thermal insulation |
|
|
reticular CT
|
location: internal framework of lymph nodes, spleen bone marrow
funct:structure for organs and framework for other cells to work in |
|
|
dense regular CT
|
collagenous fibers are parrallel
"yellow" CT=ligament "white"CT=tendon funct: withstand tension in single direction |
|
|
dense irregular CT
|
location: dermis, joint capsules, organ capsules, perichondrium, periosteum
funct: withstand tension in several planes |
|
|
vascular CT blood
|
matrix- liquid, plasma
|
|
|
erythrocytes
|
anucleated and biconcave
carry respiratory gasses |
|
|
leukocytes
|
nucleated
fight microorganisms |
|
|
thrombocyte
|
cell fragments-tiny purple dots
function in clotting |
|
|
Supportive CT
|
includes cartilage and bone
matrix is semisolid or solid |
|
|
Cartilage
|
characteristic: posses lacunae where chondrocytes are found
matrix is semisolid bound by perichondrium funct:supports, protects-avascular slow to heal |
|
|
types of cartilage
|
hyaline cartilage
elastic cartilage fibrocartilage |
|
|
hyaline cartilage
|
perichondrium (dense irreg CT) on both sides
contains collagenous fibers in matrix location: trachea,bronchi, larynx, ribs, tip of nose, articulating surfaces of bones lacunae appear as singles doubles and triples |
|
|
elastic cartilage
|
narrow band of tissue-numerous lacunae usually evenly distributed with little matrix and visible elastic fibers
location:external ear, epiglottis funct: flexible but strong |
|
|
fibrocartilage
|
possesses no perichondrium
has lots of collagenous fibers in matrix though not so many lacunae location: pubic symphysis, intervertebral discs, menisci of knee |
|
|
bone, compact bone
|
dense and solid matrix, contains collagenous fibers in matrix, possesses lacunae where osteocytes are found
|
|
|
osteon aka haversian system
|
central canal of osteon or haversian canal
lamellae-concentric rings of matrix lacunae- chambers possessing osteocytes canaliculi-small canals(cytoplasmic extensions) connecting lacunae |
|
|
muscle tissue types
|
skeletal
smooth cardiac |
|
|
skeletal muscle tissue
|
striated
multinucleated cells voluntary rely on intracellular calcium |
|
|
smooth muscle
|
non-striated
mononucleated involuntary rely on extracellular calcium location:walls of gut, arteries, respiratory tract, reproductive tract, urinary tract, iris of eye |
|
|
cardiac muscle
|
striated
mononucleated involuntary cells are branched and meet end to end posses intercalated discs, gap junction allowing for rapid communication between cells rely on extracellular disc |
|
|
nervous tissue cells
|
neuron
neuroglia |
|
|
neuron
|
a nerve cells receiving and transmitting electrical impulses, cannot divide by mitosis
soma-nerve cell body receiving a nerve impulse dendrites-numerous extensions of soma receiving a nerve impulse Axon-extension of soma transmitting nerve impulse |
|
|
neuroglia/supporting cells
|
all other cells in nervous system can go through mitosis, most nourish and maintain neurons in nervous system, provide metabolic and physical support
|
