Heart
What is the sac that surrounds the heart called
pericardium
What is the liquid portion of blood?
plasma
Sites of gas exchange
Capillaries
Where deoxygenated blood enters the heart
right atrium
There are four valves inside the heart name them.
Tricuspid, Mitral or bicuspid, Pulmonary, and Aortic
Largest artery in the body
Aorta
Name the four chambers of the heart
Right and Left Atrium, Left and Right Ventricle
What chamber does the blood enter once it leaves the lungs.
Left Atrium
Heart chamber that supplies oxygenated blood to the body
Left Ventricle
What type of blood is in the pulmonary artery?
deoxygenated
What is the name of the valve between the right atria and right ventricle
Tricuspid
The cardiovascular system is a closed system which consists of :
Blood
Heart
Blood Vessels
Blood vessel that carries blood from the lower body into the right atrium
Inferior vena cava
Blood vessel carrying oxygenated blood to the left atrium
pulmonary vein
A wall of tissue that divides the right and left sides of the heart
septum
Pericardial fluid; where is it found and what does it do
•Pericardial fluid- found between the two heart layers where it as a lubricant to prevent friction as the heart beats
why are there valves in hearts?
to stop blood from flowing back
Circulation between heart and lungs
pulmonary circulation
conductive pathway of the heart
sa node-->av node-->Bundle of His--> Purkinje fibers
Name 3 functions of the cardiovascular system
•blood is a fluid tissue that transports oxygen and nutrients to the body tissues
•Blood returns some waste products from these tissues to the kidneys and carries carbon dioxide back to the lungs
•blood cells also play important roles in the immune system
What is the function of the capillaries?
Exchange System. Exchange nutrients, gases, and waste products. CO2 and O2
difference between mitral and tricuspid valve
mitral has 2 cusps and tricuspid has 3 cusps
What elements make up a heartbeat and what is happening in each? Must list part of wave and action occurring
•P wave- stimulation (contraction) of the Atria
•QRS complex- stimulation (contraction) of the ventricles; Atria relax as the ventricles contract
•T wave- recovery (relaxation) of the ventricles