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KLS Human Body

Heart organ that supplies blood and oxygen to all parts of the body by pumping blood through a series of blood vessels
arteries carry oxygenated blood from the heart to the body
veins carry unoxygenated blood to the heart
capillaries small blood vessels where the transfer of oxygen and nutrients from the blood to body tissues occurs; where blood goes from the arteries to the veins
path blood travels through body heart to arteries to capillaries to veins to heart to lungs to heart to arteries
blood's function transport nutrients and oxygen to the body and transport wastes to remove from body
What is heart made of? made of muscular walls
heart beat the beat of the heart is produced by its pace maker which makes all of the heart muscles contract and relax in unison
ventricular fibrillation caused when a heart muscle beats out of unison interrupting the beat of the heart and making the hearts beat totally ineffective
heart attack condition where one of the arteries supplying the heart muscle with blood becomes blocked
heart disease disease where a lot of cholestorol in the blood causes clogging of the arteries and reduces blood flow
why does heart beat increase increased activity or stress requires an increase in oxygen which in turn causes the heart beat to increase; remember, cells requiring more oxygen send message to brain which causes an increase in heart beat
why do doctors shock heart to stop the heart so that its pace maker can retake over the beat and return the beat to normal
lung's function absorb oxygen and transfer it to the blood and remove carbon dioxide from the blood
how do we breath the diaphragm contracts and relaxes which causes air to enter into and out of the lungs
alveoli small air sacs in the lungs where oxygen is put into the blood and carbon dioxide is taken out of the blood
how does oxygen get to all parts of body blood
kidneys' function kidneys form urine by forcing blood through filters where excess fluid and small molecules are removed from the blood; the kidneys also make some hormones for the body
why are people thirsty the thirst center in your brain causes you to be thirsty when your fluid level runs low
signs of dehydration getting very thirsty; feeling weak, light-headed and dizzy; your urine becomes very yellow
treatment for dehydration drinking water
bladder stores urine until you need to urinate
how does virus enter cell fools the cell by making it think it is a messenger (protein that works as a messenger)
what does virus turn cell into virus cloning factory that makes copies of viruses
body's first line of defense killer cells that spray poison killing cells but it also destroys healthy cells
stem cell cells that can create cells and replace damaged cells such as when a bone breaks stem cells replace the damged cells in the bone
what bones are made of collagen (a protein) and calcium phosphate
how do bones stay strong osteoclasts break down and remove old and damaged bones; then osteoblasts lay down new bone
endorphin natural pain killer that blocks pain in the body to give person chance to escape danger
how do wounds form clot platelets form a spherical shape and lock together forming a wall, the wound then forms a net of fibrin that contracts and squeezes out fluids and enventually pulls sides of wound together
why does a wound swell fluids build up where there is damage in the body causing swelling
liver body's largest gland; detoxifies blood and creates bile which is used to break down fats
stomach j-shaped pouch responsible for storing and digesting food; when food enters stomach, walls of stomach churn food with powerful acids that kill bacteria and break down proteins; release food into small intestine
small intestine thousands of folds and millions of fingerlike projections called villi increase surface area of small intestine absorbs 90% of water and nutrients body will absorb from digested food
large intestine absorbs last bits of nutrients and water from indigestible foods; compacts(squeezes) and stores remaining matter and eliminates it from body as feces
pancreas long organ positioned behind stomach produces insulin and and enzymes that aid digestion
insulin helps regulate amount of sugar in blood
gall bladder hangs from liver; collects, stores and concentrates bile from liver
rectum feces are stored here briefly before removal; at end of large intestine
Created by: coachkls