exam yr 10 Flashcards
Motion
when an object changes its position
Linear motion
one dimensional motion along a straight line
Force
influence that can change motion of object
Summation of force
combination of forces produced by different parts of the body.
simultaneous and sequential
4 components of blood
Plasma
platelets
Red blood cells
white blood cells
Diffusion
oxygen enters blood stream through capillaries and carbon dioxide leaves the blood stream.
Agonist muscle
contracts to move limb
Antagonist
contracts to return limb to starting position
Angular motion
moves along curved path
General
combination of linear and angular motion
Heart rate
speed of heart beat
Stroke volume
volume of blood pumped from the left ventricle per beat
Cardiac output
volume of blood pumped by heart per unit time
Blood pressure
pressure of blood
Systolic pressure
pressure during heartbeat