divides the body into upper and lower halves
away from the midline
divides body into left and right
of a multicelled organism, body fluid in spaces between cells
facing forward with palms of the hands and feet also facing forward
(adj.) on or near the surface; concerned with or understanding only what is on the surface, shallow
Closer to the origin of the body part or the point of attachment of a limb to the body trunk
The most abundant element in the human body is
Bonds created by sharing electrons with other atoms.
Formed when one or more electrons are transferred from one atom to another
Involuntary muscle found inside many internal organs of the body
A muscle that is attached to the bones of the skeleton and provides the force that moves the bones.
A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level
A type of regulation that responds to a change in conditions by initiating responses that will amplify the change. Takes organism away from a steady state.
A primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation.
simple squamous epithelium
single layer of flattened cells
stratified squamous epithelium
Function: protects underlying tissues in areas subject to abrasion
Location: nonkeratinized type forms the moist lining of the esophagus, mouth, and vagina; keratinized type forms the epidermis of the skin, a dry membrane.
layer of skin cells forming the outer and inner surfaces of the body
A body tissue that provides support for the body and connects all of its parts (i.e bones, blood, cartilage)
structural protein found in the skin and connective tissue
hard protein material found in the epidermis, hair, and nails
Tissue that covers outside of the body and lines organs and cavities.
regeneration and fibrosis
delivers oxygen and nutrients to body cels
the system that removes waste from your body and controls water balance
Allows movement, facial expression and supports the bones
forms blood cells
Cleans body fluids of bacteria and foreign matter
Breaks down food into absorbable units that enter the blood for distribution to body cells.
Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use (metabolism) by body cells. (hormones)
replacement of destroyed tissue by the same kind of cells
the thickening and scarring of connective tissue, usually as a result of injury.
amino acids (i.e. keratin, collagen)
fats and oils
A lipid made from fatty acids that have at least one double bond between carbon atoms. (liquid at room temp)
A lipid made from fatty acids that have no double bonds between carbon atoms (solid at room temp)
back of knee
head, neck, trunk
anatomical term for front
Examples of positive feedback
enhancement of labor contractions by oxytocin, platelet plug formation and blood clotting
Examples of negative feedback
body temperature, blood pressure, sweating, glucose regulation