Tissues Flashcards
Squamous simple epithelial tissue does what
diffusion and filtration
What does squamous stratified epithelial tissue do
Protects
What does cuboidal columnar simple epithelial tissue do
Secrete and absorb, the types with cilia propel mucus or reproductive cells
Wat does cuboidal columnar stratified epithelial do
Protect, rare in humans
What does transitional stratified epithelial do
protect, stretches for urinary structures
What makes up endothelium
simple squamous epithelium
Where is endothelium located
lumen of blood and lymphatic vessels, in the heart and chambers
where is the mesothelium located
serous membrane (abdomino-pelvic cavty)
what does a goblet cell do
secrets mucin (a protein)
what is a gland
epithelial cells that makes and secrets a product
what two cell organelles are most developed in gland cells
ER and golgi
Are glands unicellular or multicellular
classified as both
Example of unicellular gland
goblet cell
how are multicellular cells sub classified
by shape and product delivery
What do exocrine glands excrete
sweat and salive
what do endocrine glands excrete
hormones
how are exocrine gland secretions transported
through ducts
how are endocrine gland secretions transported
directly into bloodstream
where are exocrine glands located
close to their target cells
where are endocrine glands located
within highly vascularized areas, doesn’t have to be close to target cells
what are the three sub types of exocrine glands
merocrine, apocrine, and holocrine glands
what do merocrine glands secrete
secret vesicles from the cells that make up the gland via exocytosis
what do holocrine glands secrete
secrete disintegrating cells, with the contents becoming the secretion
what does an apocrine gland secrete
the apical surface of the gland
what are the functions of connective tissue
protection, support, storage, bidning, transport, and immunity
what three things do connective tissue consist of
specialized cells, protein fibers, and ground substance
what is the purpose of resident cells
support, maintain, repair
what is the purpose of wandering cells
immune protection, repair
what three fibers make up connective tissue
collagen, elastic, reticular
collagen
an abundant protein, flexible but strong, thickets of connective tissue fibers
elastic
elastin protein, stretchy, thinner than collagen
reticular
forms a net, made of a protein similar to collagen
mesenchyme
first connective tissue to emerge, all other tissues derive from it
definition of tissue
group of similar cells with common function
definition of histology
study of tissues and relationships within the organs
hypertrophy
increase in cell size
atrophy
decrease in cell size
hyperplasia
increase in number of cells
metaplasia
change in form or cell type
what are tissues composed of
cells and matrix
what is matrix
nonliving intercellular substance
define muscle tissue
specialized cells that respond to stimulation. often elongated.
what are the three types of muscle
skeletal, smooth, and cardiac
skeletal muscle
striated, peripheral multi nuclei. voluntary.
smooth muscle
non striated, involuntary, cells have single central nuclei
what does smooth muscle form
visceral organs, blood vessel walls
cardiac muscle
striated, single central nuclei in cells.
what two types of muscle are striated
skeletal and cardiac
what type of muscle is non striated
smooth
what type of muscle forms sheets
smooth muscle
what does smooth muscle do
propel substances or objects along internal passageways
function of epithelial tissue
protect, produce secretions, absorption, diffusion, sensory reception
characteristics or epithelial tissue
exposed to body cavity, regenerative, avascular, innervated, mostly of cells
does epithelial tissue have a small or large matrix
small matrix
avascular definition
no blood vessels
innervated definition
supplied with nerves
