Histology Flashcards
What are the four categories of tissues?
epithelial, connective, muscle, nervous
What does the Epithelial tissues include?
simple, stratified, pseudostratified, transitional, glandular
What are the shapes of epithelial tissue?
squamous, cuboidal, columnar
what are the three types of connective tissues?
protein fibers, mixed, fluid
what do the protein fibers include?
dense, loose, adipose, reticular
what do the mixed tissues include?
cartilage, bone, fluid
What are the only fluid connective tissues we have?
blood
what are the 3 types of muscle tissue?
skeletal, smooth, cardiac
what are the types of nervous tissue?
glial, neuron
An epithelial tissue that has one layer
simple
An epithelial tissue that has many layers
stratified
filling between the cells
interstitial/ extracellular matrix
Most abundant tissue in the body
connective tissue
Where are connective tissues found?
throughout the body
What are connective tissues composed of?
Scattered cells with abundant intercellular material
What are the functions of connective tissues? (9)
bind structures, support, framework, fill spaces, store fat, produce blood cells, protects against infection, repairs tissue damage
produced by connective tissue cells and excreted to their exterior, separates living cells
extracellular matrix
what does the extracellular matrix consist of?
ground substances and fibers
composed of water and adhesion proteins
ground substance
allowing connective tissue cells to attach themselves to the matrix fibers embedded in the ground substance
adhesion proteins
strands of collagen, elastin, or reticular protein
protein fibers
mixture of fibers and hard mineral deposits
protein fibers and ground substance
loose
areolar
refers to cartilage
chondro
space
lacunae
what are the 2 categories of connective tissues?
dense and loose
what do dense protein fiber matrix include?
regular and irregular
attachment for basement memberane
loose
protein matrix with fat containing cells scattered throughout
adipose
netlike meshwork of the collagen fibers that helps hold tissues in place and sometimes helps to filter particles from fluids passing through it
reticular
what are the types of mixed matrix?
cartilage and bone
what are 3 types of cartilage?
elastic, hyaline, fibrocartilage
external ear, parts of larynx
elastic
ends of bones, joint linings
hyaline
invertebral disks, knees and pelvic girdle
fibrocartilage
cartilage cells; lie within lacunae
chondrocytes
bone cell
osteocyte
what are the 2 types of bone tissues?
compact, spongy
outer covering of all bones and along shafts of large bones
compact
scaffolding of bone inside a shell of compact bone
spongy
liquid matrix (blood plasma) and circulating blood cells
fluid matrix
Groups of cells with similar structures and functions working together to carry out a specific function
tissue
the study of tissues
histology
exposed to outside or open space internally
free surface
lacks blood cells
avascular
contains nerves
innervated
prevents virus and bacteria to enter
rapid mitosis
what are the functions of tissues?
physical and chemical protection, sensory reception, secretion, absorption, excretion
looks like it’s layered but it’s not; nuclei in different spots of cells
pseudostratified
flattened cells
squamous
box-like cells
cuboidal
pillar like cells
columnar
elastic cells that flatten as stretched
transitional
what are all epithelial tissues anchored to?
basement membrane
where is the simple squamous found?
lungs, capillaries, alveoli
what does the simple squamous do?
exchange gases, lines blood and lymph vessels and body cavities
Where are the simple cudboidal found?
ovaries, kidney tubules, ducts of glands
what does the simple cudboidal epithelium do?
secretion and absorption in kidneys, secretion in glands
where are the simple columnar found?
uterus, stomach, intestines
what does the simple columnar do?
protects underlying tissues, secretes digestive fluids, absorbs nutrients, increase surface area
where are the stratified squamous found?
skin, mouth, throat, vagina, anal canal
what does the stratified squamous do?
prevents water and substances from escaping, blocks chemicals and microorganisms
where are stratified cuboidal found?
mammary gland, sweat gland, pancreas, salivary glands
what does the stratified cuboidal do?
provides more protection
where are the stratified columnar found?
vas deferens, male urethra, parts of the pharynx
what does the stratified columnar do?
protects underlying tissue
where are the pseudostratified columnar found?
respiratory tubes
what does the pseudostratified columnar do?
line and sweep debris
where are transitional epithelium found?
urinary bladder, ureter, superior urethra
what does the transitional epithelium do?
desensibility and keeps urine from diffusing, expandable lining
where are the glandular epithelium found?
digestive system, respiratory system, skin, salivary, pancreatic, sweat, mammary glands
what does the glandular epithelium do?
secrete products into ducts, secrete in body fluids and blood
secretes products into ducts
exocrine
secrete in body fluids and bloode
endocrine
Considered to be organs because they are composed of more than one type of tissue
Epithelial membranes
What are epithelial membranes made of?
Epithelium and connective tissue
What are the four main types of epithelial membranes?
Serous, mucus, synovial, integumentary
Most common connective tissue
fibroblast
cordlike or bandlike mass of white fibrous connective tissue that connects muscle to bone
tendon
cell that secretes mucus
goblet
concentric rings of bone cells
lamellae
skin gland that secretes sebum
sebaceous gland
discs that provide special connection in cardiac muscle
intercalated disc
protein in white fibers of connective tissues and in bone matrix
collagen
What are the characteristics of skeletal muscle?
voluntary, striated
What are the characteristics of smooth muscle?
involuntary, visceral
What are the characteristics of cardiac muscle?
Branched, striated
Where are nervous tissues located?
Brain, spinal cord, peripheral nerves
Bone forming cells
Osteoblasts
Refers to a type of cell
-Cyte
Cells that erode bone
Osteoclasts