pulmonary circuit
carries blood between the heart and lungs to be oxygenated and pumped out
systemic circuit
transports blood between the heart and the body. transports oxygen and nutrients to the tissues and takes deoxygenated blood and waste materials back to the heart.
artery
thick elastic walls, small circumference to transport blood away from the heart, high pressure makes a pulse
vein
thin walls with valves and a large circumference to transport blood to the heart
capillary
thin walls with small circumference to exchange materials between the blood and the body
vascular shunt
the redirection of blood flow to areas where it is most needed.
vasoconstriction
constriction/narrowing of blood vessels to areas not involved in exercise
vasodilation
widening of blood vessels to increase blood flow near the surface of the skin for areas that lack oxygen or nutrients
pulmonary circuit
out of right ventricle through the pulmonary artery, to lungs to become oxygenated blood and then goes to the left atrium through the pulmonary vein
systemic circuit
out of left ventricle through aorta to body and back to the right atrium through the vena cava's.
Hyperthermia
Occurs when the body gains more heat that it loses. Core temp rises in three stages, heat cramps, heat exhaustion and heat stroke
Hypothalamus
Receives input from two sets of thermo recepters. One monitors blood passing through the brain and the other monitoring external environment via the skin.
Platelets
Helps form blood clotting. Produced in bone marrow.
Plasma
the clear yellow-liquid part of the blood that carries blood cells around the body
white blood cells
Fights infection, by absorbing and digesting dieases
red blood cells
Blood cells that carry oxygen from the lungs to the body cells. Contain haemoglobin the protein that carrie's the oxygen to muscles
systole
heart contracting and emptying
diastole
heart relaxing and filling with blood
heart rate
number of heart beats a minute
stroke volume
the volume of blood pumped out by a ventricle during 1 heartbeat
cardiac output
amount of blood ejected from the left ventricle in one minute
cardiac output equation
Q= HR x SV