Chapter 5 - NS #1 "Tissue Level of Organization Flashcards
cells are highly organized…
they still cannot function by themselves
Definition of Histology
study of cell tissue
Characteristics of Epithelial tissue
Covers body surfaces, lines internal structures and cavities, packed tightly together little extracellular material between adjacent cells, no blood vessels
one layer
functions as a transporter(simple)
2 or more layers
function as protection(stratified)
Mitotic
divide fast
where does epithelial tissue connect
connective tissue, attach at the basement membrane(nonliving)
where is connective tissue found
bone, cartilage, fat, and lymph tissue
does epithelial tissue have nerve supply
yes
what is epithelial functions
protection, secretion, absorption, and excretion
Connective tissue
most abundant and widely distributed tissue
What are the functions of connective tissue
bind structures, provide support and protection, serve as frameworks, fill spaces, store fat, produce blood cells, protect against infections, help repair tissue damage.
Matrix…
extracellular material (ECF)
where is connective tissue found
cover joint cavity
what are the 4 principal types of tissues
Epithelial tissue, Connective tissue, Nervous, and muscle
epithelial tissues function is
protection, secretion, absorption, and excretion
which tissue is the most abundant and widely distributed
Connective tissue
do connective tissues touch each other
no
what are the functions of connective tissue
bind structures, provide support and protection, serve as frame works, fill spaces, stores fat, produces blood cells, protects against infections, helps repair tissue damage
Is connective tissue vascular
its highly vascular
what are fixed cells
reside in a specific tissue type for an extended period of time
fibroblasts
secrete proteins to produce fibers in matrix
what are mast cells
located near blood vessels, releases allergy mediators
Which tissues appear temp. due to infection
Wandering cells
Macrophages
phagocytic cells that clear foreign particles
What are the 2 main categories of connective tissue
connective tissue proper and specialized connective
the 2 groups of nerve cells are
Neurons- most basic and Neuroglia-support and bind nervous tissue components
Nervous cells…
collects info by receiving stimuli, coordinate body activity, transmit “action potentials”, and keeps the body at homeostasis
How do nervous system maintain homeostasis
it collects info by receiving stimuli which regulates our bodies system
what % of body weight does muscle have
40-50
What is muscle responsible for
movement and generation of force
what does contractile mean
they can shorten and thicken
what are the 3 types of muscles
cardiac, smooth, and skeletal
Where is cardiac found and what does it look like
heart, involuntary, striated look like branch
where is skeletal found and what does it look like
found in bones, voluntary, striated rows of salmon
where is smooth found and what does it look like
organs found in blood vessels looks wavey red big nuclei
