Tissues & Integumentary System Flashcards
(116 cards)
histology
study of tissues
tissues
cluster of cells similar to each other & work together to perform function
name the 4 types of cells
epithelial, connective, muscle, nervous
how many different types of cells in body
200
somatic cell
all body cells except sex cells
histology
microscopic study of tissue appearance, organization, function
epithelial tissue function/place
sheets of cells cover exterior surface, internal cavities, forms certain glands
connective tissue function
binds cells & organs & functions in protection, support, integration of all body parts
muscle tissue function; name the 3 different types
responds to stimulation & contracting to provide movement; skeletal (voluntary), smooth, cardiac
nervous tissue
excitable, allows electrochemical signals as nerve impulses that communicates w/rest of body
zygote
fertilized egg
totipotent
each embryonic cell has capacity to to divide, differentiate, develop into new organism
ectoderm function
“outer”; epidermis, glands on skin, some cranial bones, pituitary & adrenal medulla, nervous system, mouth, anus
mesoderm
“middle”; connective tissue, bone, cartilage, blood, endothelium of blood vessels, muscle, synovial membranes, serous membranes lining body cavities, kidneys, lining of gonads
endoderm
“inner”; lining of airways/digestive system except mouth & rectum/anus, glands
tissue membranes
thin layer of sheet of cells that cover outside of body; connective & epithelial
connective tissue membrane
encapsulate organs & line movable joints
synovial membrane
connective tissue that lines freely movable joint so they can be lubricated & move freely
what attaches to connective tissue?
serous & mucous membranes (types of epithelial membranes)
examples of synovial membranes
shoulders, elbow, knee
synovial membranes release what type of fluid to be a natural lubricant
hyaluronan `
serous membrane
epithelial membrane; line cavities not open to outside, cover organs
cutaneous membrane (cutaneous membrane)
squamous epithelial membrane on top of connective tissue, dead keratinized cells are on top of this
basal lamina
mix of glycoproteins & collagen; attachment site for epithelium & connective tissue