Health - Midterm

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Terms in this set (...)

nervous system
coordinates all the activities in the body and allows communication between the brain and other parts of the body
neuron
transmit messages to and from the spinal cord and brain
brain
most important part of the nervous system; broken into 3 divisions; weighs 3 pounds
spinal chord
relays messages from the brain and body
skeletal system
supports, protects, produces new cells, and allows movements; made up of bones and connective tissue
white blood cells
protect the body against infection
capillary
small vessels that carry blood from arterioles and to small vessels called venules, which empty into veins
respiratory system
provides oxygen to the blood and removes carbon dioxide from the body; consists of lungs, trachea, & diaphragm
antibody
a blood protein produced in response to and counteracting a specific antigen
trachea
known as the windpipe; branches out into two bronchi
lungs
organs located on either side of your heart
muscular system
allows voluntary and involuntary movements
joint
where two bones meet
cardiac muscle
a type of striated muscle that forms the wall of the heart
pituitary gland
gland that produces hormones that controls growth and other glands; located in the brain and is very small
metabolism
the chemical reactions that occur within an organism
enzyme
protein that speeds up chemical reactions in the body
large intestine
tube that creates and rids the body of waste; colon is another name
central nervous system
consists of the brain and spinal cord; brain is the most important part of the nervous system; spinal cord relays messages from the brain and body
cell body
main part of a neuron
cerebrum
part of the brain responsible for thinking; largest part
dendrites
short fiber that receives impulses
platelets
types of cells in the blood that cause blood clots to form
red blood cells
contain hemoglobin so they can transport oxygen and carbon dioxide; are made in the bone marrow
heart
has 4 chambers; is a muscle; pumps blood throughout the body
immune system
the cells and tissues that recognize and attack foreign substances in the body
phranyx
another name for your throat
cilia
hair-like particles that remove dust from the air
bones
made up of living tissues formed into different layers
ligaments
connects bones to bones
gland
group of cells that make special chemicals for the body
parathyroid gland
four glands that control the amount of calcium and phosphorous in the body
pancreas
an organ that produces enzymes and releases them to the small intestine
gallbladdder
stores bile produced by the liver
choking
airway obstruction
endocrine system
includes various organs that work together to regulate body functions
cerebellum
part of brain responsible for coordinating muscles
axon
long fiber that carries messages away from cell body
cardiovascular system
transports nutrients, waste, and harmones
pathogen
a microorganism that causes disease
vein
carries blood to the heart; contains carbon dioxide
artery
carries blood away from the heart; contains oxygen
kidney
pair of organs that filter water and wastes from the blood and that excrete products as urine
heart rate
measure of cardiac activity usually expressed as the number of beats per minute
lymph
the clear fluid that fills the spaces around body cells
lymph node
encapsulated masses of lymph tissue found along lymph vessels
mucus
a thick like secretion that moistens the air for the lungs
epiglottis
flap of tissue located above the larnyx; remains open when you breathe; closes when you eat & drink
alveoli
tiny air sacks in the lungs that are covereds with capillaries
broncioles
network of tubes that connect to the lungs
bronchi
two tubes that branch off to the wind pipe; main airways that reach into the lungs
muscle
stretch to allows a wide range of motion like elastic; consists of fibrous cells; more than 600 mucles
tendon
a fibrous cord that attaches muscle to the bone
smooth muscle
muscles that act on the lining of the body's passage ways and hollow internal organs
hormone
chemical messengers that create change in the body; released directly to the blood stream
thyroxin
hormone that controls metabolism and calcium balance in the body
thyroid gland
gland that produces thyroxin; located in the upper trachea
digestive system
breaks down food into nutrients and it helps with the elimination of waste
liver
food never reaches this organ; sends bile to the stomach and small intestine
small intestine
a long tube that digests and absorbs nutrients; 21 feet long
rescue breathing
breathing for a person who isn't breathing on his or her own