Tissues Flashcards
in kidneys epithelium both:
absorbs and filters
Are epithelial tissues vascular or avascular?
Avascular
most concerned with absorption, secretion and filtration
Simple epithelia
usually forms membranes where filtration/ exchange of substances by rapid diffusion occurs. ;
Simple squamous epithelium
Simple squamous is found in:
air sacs of lungs (alveoli)
common in glands (saliva glands & pancreas)
Simple cuboidal epithelium
forms the wall of kidney tubules and covers surface of ovaries
Simple cuboidal epithelium
lines entire length of digestive tracts from the stomach to the anus
Simple columnar epithelium
their nuclei appear at different heights; gives false pseudo impression ; absorption & secretion
Pseudostratified columnar epithelium
two cell layers; epithelial function in protection
Stratified epithelia
most common srat epithilium in the body ; consist of many layers
Stratified squamous epithelium
found in sites that receive good deal of abuse / friction (skin mouth esoph)
Stratified squamous epithelium
both of these are found in ducts of large glands
stratified cuboidal
stratified columnar
forms lining of urinary bladder, ureters & urethra
Transitional epithelium
make and secretes product
Gland
connects body parts; found everywhere; most abundant & widely distributed tissue type
Connective tissue
protects, supports, cushions & insulating body tissues
Connective tissues
Tendons and ligaments are vascular or avascular?
Avascular
Connective tissues are vascular except tendons & ligaments. T/F
True
nonliving substance outside the cells
extracellular matrix
Types of connective tissues
Bone
Cartilage
dense & loose connective
blood
contains calcium salts & collagen fibers
Bone
Cartilage’s major cell type
Chondrocytes
most wide spread of cartilage
hyaline cartilage
forms trachea, attaches ribs to bone
hyaline cartilage
cushonlike disc between vertebrae of spinal column
fibrocartilage
external ear (type of cartilage)
Elastic cartilage
dense connective tissue’s matrix element
Collagen fiber
Examples of dense connective tissue:
Tendons & ligaments
makes up lower layers of skin
dense irregular connective tissue
Types of Loose connective tissues : (softer, more cells, fewer fibers)
Areolar, adipose, reticular
most widely distributed connective tissue in body; cushions & protects body organs it wraps
Areolar connective tissue
functions as universal packing tissue; connective tissue glue; hold internal organs
Areolar connective tissue
areolar tissue which adipose fats predominate
Adipose connective tissue
forms tissue beneath the skin ; insulates body and protects bumps and extremes of both heat and cold
Adipose connective tissue
Adipose tissue cushions
eyeballs
Types of Muscle tissues: (contract / shorten; generates force)
Skeletal, cardiac and smooth
They pull bones or skins when contracted (changes in facial expression)
Skeletal muscle
Cardiac muscles fit together at junctions called
Intercalated disc
found in walls of hollow organs, stomach uterus & blood vessels
Smooth muscle
send and receive electrochemical impulses
neurons
insulate, support and protect delicate neurons
Neuroglia
body response that attempts to prevent further injury
Inflammation
replacement of destroyed tissue w the same kind of cells
Regeneration
involves repair by scar tissues
Fibrosis
Most of the skeleton in a developing embryo is derived from _____ tissue.
Hyaline
provides water reservoir of water & salts; all body cells obtain and release wastes into this fluid
Areolar connective tissue
forms stroma; internal framework of body; lymph nodes, spleen & bone marrow
Reticular connective tissue
