cardiovascular pt 2

carries blood from heart to lungs, blood is oxygen poor

receives blood from 3 places

drains blood above diaphragm (head, neck, thorax and upper limbs)

drains blood below diaphragm (abdominopelvic cavity and lower limbs)

drains blood from myocardium

opens into pulmonary trunk

located sa right side of the heart, carries blood from heart to lungs, blood is oxygen poor pero carbon diozide rich

collection of veins para mag join together together to form large vessels

splits into right and left pulmonary arteries

carry blood away from heart to lungs

carries blood from the heart to body, blood is oxygen rich and carbon dioxide poor

has 4 openings (pulmonary veins) that receive blood from lungs

opens into aorta, thicker and contracts more forcefully, higher blood pressure than right ventricle must get to body

carries blood from left ventricle to the body

supply blood to heart wall, originate from the base of aorta (above aortic semilunar valve

has 3 branches, supply blood to anterior heart wall and left ventricle

originates on right side of aorta, supply blood to right ventricle

collects blood from heart wall, originate from coronary sinus directly connected to the right atrium

collects blood from the right ventricle

collects blood from the lefr ventricle

changes in membrane channels permeability responsible for producing action potentials

primers for pumps

power pumps

repetitive pumping action which includes contraction and relaxation

responsible for blood movement

blood moves from areas of

first sound is lubb, due to the closing of the

second is dupp due to the closing of the

number of heart beats in one minutes, should have 72 beats per minsl

volume of blood pumped by a ventricle in 1 min, product of the heart rate snd the stroke volume

sympathetic nervous system speeds heart rate, parasympathetic nervous system primarily vagus nerve fibers, slow and steady the heart ratw

epinephrine and thyroxine speed heart rate, excess or lack of calcium, sodium, potassium ions also modify heart activity

age, gender, exercise, body temperature influence heart rate