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bmms ch. 13 life sci

bmms ch. 13 life science

QuestionAnswer
The body’s ability to destroy pathogens before they can cause disease. immunity
The process by which the body breaks down food into small nutrient molecules. digestion
An organism that causes disease. pathogen
A group of organs that work together to perform a major function in the body . organ system
A protein produced by a B cell of the immune system that destroys pathogens. antibody
The inner framework made of all the bones of the body. skeleton
A place in the body where two bones come together. joint
A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together. cartilage
The small bones that make up the backbone. vertebrae
Strong connective tissue that holds bones together in movable joints. ligament
The soft connective tissue that fills the internal spaces in bone. marrow
Strong connective tissue that attaches muscle to bone. tendon
The maintenance of stable internal conditions in an organism. homeostasis
Hard, dense bone tissue that is beneath the outer layer membrane of a bone. compact bone
Layer of bone tissue having many small spaces and found just inside the layer of compact bone. spongy bone
A muscle that is under conscious control. voluntary muscle
A device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted. machine
A muscle that is NOT under conscious control. involuntary muscle
A push or pull exerted on an object. force
Force exerted on an object that causes it to move. work
A fixed point on which a lever pivots.. fulcrum
The force a lever exerts on an object. resistance force
A simple machine that consists of a rigid bar that pivots about a fixed point. lever
For a lever, the ratio of the resistance force to the effort force. mechanical advantage
The force you exert on a lever. effort force
Created by: tgsheldon
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