HOC1: Chapter 2, Tissues

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28 Terms
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what are tissues
several cells with similar structure that join together to accomplish a common function
types of tissues
-muscle -epithelial -nervous -connective
parts of epithelial tissue
epithelia and glands
tissues that cover the body and line cavities within the body
function of glands
secrete chemicals
function of epithelial tissues
-protects the body from physical damage -controls what substances enter and leave the body -provide sensory information-secretes various substances
types of epithelia
-simple squamous -simple cuboidal -simple columnar -stratified
simple squamous epithelium
single layer of cells; rapid diffusion of substances because of its thinness
locations of simple squamous epithelium
-found in gas exchanging cavities (alveoli) of the lungs -lining of the abdominal cavity -lines the blood vessels
simple cuboidal epithelium
typically involved with secretion or absorption; surrounds tubules in the kidneys and are present in various secretory glands
simple columnar epithelium
have secretory and absorptive functions; found in the stomach and intestines and in the lining of some of the ducts in the kidneys
stratified epithelia
found where chemical and mechanical protection are needed most
locations of stratified epithelia
-surface of the skin -mouth and throat
connective tissue
most abundant and widespread; found throughout the body
functions of connective tissue
-giving the body and organs the strength to resist external forces (including gravity) -protecting internal organs-maintaining the proper shape of organs (to keep trachea from collapsing) -providing the rigid framework on which muscles can pull, allowing movement
types of connective tissue
-connective tissue proper -cartilage -bone -blood
muscle tissue
allows our body to move
types of muscle tissue
-skeletal muscle (pulls on bones to make us move; voluntary) -cardiac muscle (heart; involuntary) -smooth muscle (found in the walls of hollow organs including blood vessels, airways, GI tract, bladder, and uterus; involuntary)
nerve tissue
-conveys information by electrical signals -concentrated in the brain and spinal cord, but nerves extend throughout the body
amino acids
building blocks of proteins
simple sugar
the study of molecules of life
nucleic acids
information carrying molecules
helps build and repair tissues
serves as an immediate source of energy
all life is made of this and needs this to live
a polymer of nucleotides with the base adenosine, guanine, cytosine, and thymine; where our genes are located