Studied by 8 people
erythrocytes
fibroblasts
epithelial cells
skeletal muscle cell
smooth muscle cell
sperm
ovary
lines walls of open tubes, body surfaces and all body cavities
lines the vessels of the secretory system and digestive system
provides secretory and absorptive surfaces
possess little to no extracellular matrix
avascula
physical protection as a barrier
reduces dehydration and abrasion
protects from physical, chemical and biological agents
absorption, regulating the passage of certain molecules in out of the body
secretion of sweat or oil or digestive enzymes
have nerve endings that can detect various sensations
tightly packed to ensure a barrier and absorptive/secretive functions
organized assembly of apical, basal and lateral surfaces
exhibits polarity which is necessary for selective movement of molecules
highly regenerative to repair damage at a rapid rate
made of 2 different layers from different cells the basal lamina and reticular lamina
supports epithelial cells
provides surface for cell movement
restricts the passage of substances between epithelial and connective tissue
bottom layer of the basement membrane
formed by cells in connective tissue
upper layer of the basement membrane
formed by epithelial cells
cells arranged in layers that cover external surfaces or line the cavities of the body
characterized by the number of cells layers that make up the tissue and the cell shape
two or more layers of cells
only the bottom layer is attached to the basement membrane
single layer but not all cells reach the apical surface
nuclei looks like multiple layers but there is only one
flattened egg shape
flat nuclei
-about the same size on all sides
nucleus is centrally located
round nuclei
cells are taller than they are wide
nucleus is oval and located in the basal region
single layer of flat disc-like cells with a flattened nuclei
surface for filtration and diffusion
found in alveoli, glomeruli nephrons, blood vessel and capillary lumens, body cavity linings
single layer of cube-like cells with large, round nuclei
responsible for secretion and absorption
found in ducts and glands, kidney tubules, ovary and thyroid
single layer of tall rectangular cells with an elongated nuclei
microvilli and cilia common on apical surface
for absorption and secretion
mainly in the lining of the digestive and respiratory tract
single layer of columnar cells of different heights and nuclei
for secretion and propulsion and may be ciliated
found in large glands, the male sperm duct and the respiratory tract (mainly the trachea)
multiple layers of squamous cells on a basement membrane
basal cells are cube/columnar shaped and mitotically active
form protection against abrasion and damage for tissue underneath
cells change shape from upper (flatter squamous) to lower layers
found in all the places you can put a dick (includes esophagus)
two or more layers of cuboidal or columnar cells
used for secretion
found in male sperm duct, sweat and mammary glands, pharynx and male urethra
appears to be stratified squamous cuboidal
surface cells are rounded/squamous
allow for stretch
lines the urinary tracts including the ureter, bladder and urethra
cells specialized for secretion production
glands consist of one or more cells that secrete specific products (water, lipids or steroids)
classified by the cell number (unicellular or multicellular) and where the product is released (endocrine or exocrine)
cells that secrete their products into ducts
lead to a body surface or body cavity
only have one goblet cell that secretes mucous
found in the lining of the digestive tract to reduce friction in the esophagus and large intestine
divided into the duct region and secretory region
usually have connective tissue, nerves, blood vessels around the outside
produces substances and forms tubules for transport
simple (unbranched) or compound (branched)
tubular (tublike), acrinar/alveolar (flasklike) or both
do not have ducts and secrete directly into the extracellular space or blood vessel
travels to specific targets
cells of the adrenal gland secrete products directly into blood vessels
cells of the thymus gland secrete into spaces between cells
provides support or integrity for other tissues/organs
most diverse abundant, widely distributed and structurally varied
connects one structure to another structure
includes tendons ligaments body fat, bones, blood and cartilage
protection of tissues and organs against unnecessary movement
physical support (muscle attachments with bones)\
energy storage/insulation (adipose tissue)
transports substances (blood)
interstitial fluid that mixes with fibers to make up the extracellular matrix
a mixture of proteins to provide structural support along with carbohydrates
nutrients and other substances can pass between cells and blood vessels
3 different kinds that provide support for connective tissue
may help determine structural properties of tissue
most common and strongest fiber
can resist being pulled apart
have active and less active states
developing are specific cell blasts
maturing are specific cell cytes
very common cell of connective tissue
have secrete fibers
secrete antibodies
associated with the immune system
abundant by blood vessels
produced histamine that are involved in the inflammatory response
most common, found under epithelial layers and surrounding organs
loosely-packed assembly of all fiber types and immune cells
cushions organs and contains key immune mediators to fight off infections
matrix surrounded by tightly packed adipocytes
insulates and protects organs while providing energy storage
found around organs and within the subcutaneous layer of skin
network of reticular fibers that are loosely organized
forms a flexible meshwork
supports tissues and immune cells
found in lymph nodes, bone marrow and splenic pulp
fibroblasts embedded within a regularly parallel ordered assembly of collagen fibers
resists pulling from stress
attaches muscle to bone (tendons)
attaches bone to bone (ligaments)
irregularly arranged collagen fibers with fibroblasts embedded within
resists force from multiple directions
found in the dermis, joint capsules and underlying epithelial linings including the digestive tract
dense regular connective tissue enriched with ordered arrangements of elastin fiber
allows for stretch and recoil of tissue
important in blood and air
found in the walls of arteries and bronchial tubes and in some ligaments
collagen and elastic fibers in a specialized matrix -provide support and withstand deformation
3 types
most abundant and the weakest
found in developing bones
strongest and has lots of collagen
found in intervertebral discs
contains lots of elastin to maintain shape
found in the ears
similar to cartilage but has a solid matrix
osteocytes are formed in lacunae
matrix of mostly water
has red and white blood cells ad platelets
matrix similar to blood with fewer proteins
cellular composition varies
generates mechanical force
three kinds
glial cells provide protection, nourishment and support to nerve cells
provide long-distance communication within the body
conducts the electrical impulses
type of epithelial membrane that covers the body (is skin)
keratinized, stratified squamous epithelium attached to a thick layer of connective tissue
exposed to air and dry
type of epithelial membrane that lines the passageways that open to the body surface
very important in defense by trapping particles and lubricates passages
may contain antibacterial agents
lines the digestive, respiratory and reproductive tracts
type of epithelial membrane that lines the body cavity, not opening to the exterior
parietal layer is attached to the cavity
visceral layer is attached to the organs
where 2 bones come together
consists of connective tissue only
cells secrete synovial fluid that acts as a lubricant
