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Science vocab

For final

TermDefinition
Skeleton your bodies framework, made up of bones and keeps you from just being a blob of flesh on the floor
vertebrae the 26 small bones in the center of your back
joint a place in the body were two bones come together
hinge joint forward and backward movement, ex. elbow
ball and socket joint greatest range of movement, ex. hips, and shoulder
pivot joint one bone rotates around another. ex. neck
gliding joint one bone slides over another, ex. wrist, and ankles
ligament holds movable joints together and is a strong connective tissue
cartilage more flexible than bone and holds joints together like a ligament
compact bone hard and dense but not solid
spongy bone like a sponge with many small spaces in it.
marrow red/ produces red blood cells Yellow/ stores fat
osteoporosis when old peoples bones become weak and break easily
fracture a break in the bone
dislocation occurs when end of bone comes out of its joint
sprain when ligaments are stretched too far
X- rays a form of energy that travels in waves used to detect broken bones
MRI/ Magnetic response imaging uses electromagnets to make a very clear picture of the inside of a body
arthritis disease of joints that makes moving them painful
athroscope when doctors make a small incision and insert a small tube with a camera in it into the joint where it is needed
involuntary muscle breathing and digesting food
voluntary muscle under conscious controll
cardiac muscle in the heart
skeletal muscle the muscle that is connected to your bones that make your bones move
smooth muscle in the internal organs like your digestive system
striated muscle muscles that appear to be banded voluntary muscles
Digestion The breakdown of food inside of the human body
Absorbtion the process by which nutrient molecules pass through the wall of your digestive system
saliva the chemical that breaks down other chemicals and nutrients in your body. mostly in the mouth
Enzymes proteins that speed up chemical reactions
epiglottis the flap of tissue that prevents food and water from entering your lungs
esophagus the muscular tube that connects your mouth to your stomach
mucus a thick slippery substance produced by the body. aides in lubrication
peristalsis when the food begins to enter the stomach
stomach the place where your body stores food and water
small intestine where chemical digestion takes place
liver produces bile and filters blood
gallbladder the organ that holds bile
pancreas preaks down chemicals such as proteins, starches, and fats.
villi absorb nutrient rich molecules
large intestine readies the last part of chemical digestion for removal through the anus
rectum waste material is readied by being compressed into a solid form
anus where solid waste material is ejected from the body.
cardiovascular system carries needed substances and cells and carries waste products away from cells.
Heart pumps blood through the body. pushes blood through the blood vessels of the cardiovascular.
atrium the upper two blood chambers in the heart
ventricle pumps blood out of the heart
valve flap of tissue that prevents blood from flowing in the wrong direction
Arteries blood vessels that carry blood away from the heart
capillaries substances are exchanged between the blood and body cells
veins blood vessels that carry blood back to the heart
aorta the largest artery in the body. blood flows from the left ventricle to the aorta
Coronary arteries carry blood to the heart itself
pulse the alternating expansion and relaxation of the artery wall
diffusion process by which molecules move from an area of higher concentration to an area of lower concentration.
blood pressure the amount of force that the blood exerts on a wall of a blood vessel.
Plasma the liquid part of blood. (90% water)
red blood cells take oxygen from the lungs and brings it too the heart and brain.
white blood cells the bodies disease fighters. They go around the body and target viruses and try to kill them off as fast as possible. Only one white blood cell for every 500 to 1000 red blood cells.
hemoglobin what red blood cells are mostly made of. an iron containing molecule that bonds to oxygen molecules
Platelets Cell fragments that play an important role in making blood clots.
lymphatic system The network of veinlike vessels that returns the fluid to the bloodstream.
lymph consists of water and dissolved materials such as glucose
lymph nodes filter lymph, trapping bacteria and other disease causing microorganisms in the fluid.
atherosclerosis the condition where the artery wall thickens as a result of the buildup of fatty materials
heart attack occurs when blood flow to the heart muscle is blocked.
Hypertension high blood pressure
Created by: jawsopti14645