Term | Definition |
circulatory(cardiovascular)system | group of organs that moves blood throughout the body delivering oxygen and nutrients to the cells |
skeletal system | group of organs that supports the body and works with the muscular system to enable the body to move; blood cells are made in parts of this system |
muscular system | group of organs that are responsible for both voluntary and involuntary movement |
system | a group of related parts that work together |
cardiac muscle | muscle that contracts and relaxes causing the heart to beat |
homeostasis | a stable or balanced state |
involuntary | happens automatically, without intention |
voluntary | happens by choice |
integumentary system | group of organs that includes skin, hair and nails; regulates body temperature and protects the body from and keeps it in touch with the world outside |
stimuli | something that causes a response |
nervous system | group of organs that sends electrical signals throughout the body; brain is the control center |
reproductive | group of organs that work together to produce new idividuals |
tissues | groups of cells that work together; epithelial, nervous, muscle, connective tissues |
joint | place where two are more bones meet |
aerobic | exercise that increases heart rate and blood flow throughout the body and strengthens the cardiac muscle |
resistance exercise | exercise that strengthens skeletal muscles |
epidermis | outermost layer of skin |
dermis | thicker layer of skin under the epidermis |
arteries | carry freshly oxygenated blood from the heart |
blood vessels | artery, capillary, vein |
capillaries | exchanges nutrients and oxygen for carbon dioxide and other wastes in the blood |
veins | carry blood back to the heart |
circulation | blood flow throughout the body |
blood | connective tissue made of plasma, red blood cells and white blood cells |
plasma | mixture of water, minerals, sugars, and proteins; red blood cells, white blood cells and platelets are in it |
blood pressure | force of blood on inside walls of arteries |
immune system | body's major defense against disease; removes damaged cells from the body. |
pathogen | virus, bacteria or fungus that causes disease |
respiratory system | group of organs that take in oxygen and get rid of carbon dioxide; works with cirrculatory system to bring oxygen to the cells |
respiration | process by which body gets and uses oxygen and releases carbon dioxide and water |
breathing | process by which the diaphragm muscle pulls air into and pushes air out of your lungs |
digestive system | organs that work togehter to break down food so it can be used by the body; mouth, esophagus, stomach, liver, small intestines, large intestines, |
levels of organization | cells-> tissues-> organs-> organ systems-> organism |
cells | basic unit of life |
tissue | group of similar cells that perform the same function |
organ | structure made of different tissues working together to perform a particular function |
excretory system | removes waste from the body |
endocrine system | sends chemical messages through body to control daily activities and long term changes such as development |
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