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35 terms

Human Body Notes

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Cell
the basic unit of structure and function in a living thing
Tissue
a group of cells that perform a function
Types of tissue
Muscle tissue- must contract and shorten_ Nervous Tissue- directs and controls movements_ Connective Tissue- provides support in your body_ Epithelial Tissue- protects body
Organ
a structure composed of tissue
Organ System
a group of organs that work together to perform a function
Skeleton
made up of all bones in a body
Vertebrae
made of 26 smaller bones(backbone)
Joint
a place in the body where 2 bones come together
Ligament
a strong connective tissue that holds the bones in movable joints together
Cartilage
another type of connective tissue that is more flexible then bone and covers the ends of the bones and keeps them from rubbing against each other
Compact Bone
located under the bones membrane and is hard and dense, but not exactly solid
Spongy Bone
has small spaces in it and is lightweight but very strong
Marrow
Red- produces most of the body's blood cells_Yellow- stores fat that can serve as an energy reserve
Sprain
occurs when a ligament is stretched too far and tear in places
Dislocation
occurs when the bone comes out of its joint
Fracture
a break in a bone
X-ray
a form of energy that travels in waves
MRI (Magnetic Resonance Imaging)
a method for taking clear images of both bones and soft tissues of the body
Involuntary Muscles
responsible for such essential activities like breathing and digesting food; cannot control these muscles
Voluntary Muscles
under your conscious control
Skeletal Muscles
attatched to the bones of your skeleton and provides force that move your bones
Tendon
a strong connective tissue that connects muscles to bone
Striated Muscle
another word for Skeletal Muscles
Smooth Muscles
are in internal organs like the stomach and blood vessels
Cardiac Muscles
found only in heart
Blood
made up of 4 components; red and white blood cells, plasma and platelets
Plasma
the liquid part of the blood
Red Blood Cells
take oxygen to your lungs and deliver it elseware in the body
Hemoglobin
an iron containing protien that binds chemically to oxygen molecules
White Blood Cells
the body's disease fighters
Platelets
cell fragments that play an important part in forming blood clots
Blood Type A
its clumping protiens are only anti-B, can recieve a safe transfusion from A and O
Blood Type B
its clumping protiens are only anti-A, can recieve a safe transfusion from B and O
Blood Type AB
its clumping protiens are none, can recieve a safe transfusion from A,B,AB and O
Blood Type O
its clumping protiens are anti-A and anti-B, can recieve a safe transfusion from O