Cardiac Flashcards
(30 cards)
What carries oxygenated blood to the atrium
Pulmonary vein
What carries oxygenated blood to the body/muscles
Aorta
What carries de oxygenated blood to the atrium
vena cava
What carries de oxygenated blood to the lungs
pulmonary artery
How to remember the valves
try before you by
What do arteries do
Carry blood away from the heart
What do arterioles do
Control blood distribution by changing their diameter
What do capillaries do
Connect arteries and veins by uniting arterioles and venules
What do veins do
Faciliate venous return (de ox blood returning to the heart)
What do red blood cells do
Carry oxygen to all living tissue
What do white blood cells do
Protect the body for infections
What is the function o the cardiovascular system
Deliver oxygen & nutrients, removal of waste products, fight infection, clot blood
What is the cardiac cycle?
The mechanical events of one heartbeat
What is diastole
The passive filing of the heart
What is atrial systole
Active forcing remaining blood into ventricles
What is ventricular systole
Active forcing ventricular blood out of the heart into the aorta and pulmonary artery
What is the sa node
The hearts pacemaker
sinoatrial node
What is the bundle of his
It carries electrical impulse from the av node to the septum and ventricle walls to the apex of the heart
Draw the nervous control of the cardiac cycle
:0
What are the purkinje fibres
They surround the ventricle walls causing ventricles to contract. Causing blood to be pushed up & out of the heart
What is the sympathetic nervous system
Speed up- fast via accelerator nerve
What is the parasympathetic
slow down -via vagus nerve
What happens to your heart rate before exercise
Anticipatory rise in order to prepare body
