Whats the circularity system made of
Cardiovascular system and lymphatic system
Whats the cardiovascrukar system made of
- arterial system
-the heart
-venous system
Describe the pulmonary circulation pathway
Right side of the heart —> lungs —-> left side of the heart
Describe the systemic circulation
- left side of the heart —> capillary beds of organs and tissues —> right side of the heart
Blood drained from right atrium to right ventricle carried to lungs via what
Pulmonary artery
The oxygenated blood returns to left atrium via what
Pulmonary vein
What vessel pumps to the whole body
Aorta
Where does the blood come back via after going through the body
Via the vena cavae
Whats systole
Contraction
Whats diastole
Relaxation
Whats the average pulse rate
70bp
What doe arteries do
Oxygen rush blood away from the heart
What do veins do
Carbon dioxide rich blood and waste products back to heart
What are the 4 functions of circulatory system
- transport fluids throughout the body
- its responsible for distributing gases and other molecules for nutrition , growth and repair
-chemical signaling (hormones ) - mediates inflammation and host defense response
What are the 4 layers of the heart
-Pericardium
-epicardium (external ); visceral (surrounding that organ ) serous pericardium
-myocardium (middle ) cardiac muscle layer
-endocardium (internal ) ; continuous with endothelium of blood vessels connecting with the heart
Name the two cardiac valves
- atrioventricular
-semilunar
Whats two types atrioventricular valve
-have 2 or 3 cusps
—-> left = mitral
—> right = tricuspid
What are two types of semilunar valve
- blood leaving left ventricle = aortic
-blood leaving leaving right ventricle = pulmonary
What are the 4 stages of conduction system of heart
- Electrical impulse starts at sinoatrial (SA) node - atria contract
- Impulse travels to atrioventicular (AV) node at atrioventicular septum
- Impulse travels down left and right bundles in the interventricular (IV) septum
- Impulse spreads out to myocardium through conducting fibers (purcungy) - ventricles contract
What three things are in the neuromuscular bundle
Nerves , arteries and veins
The artery is pulsatile what does pulsatile mean
The artery pulses beating rhythmically
What are the three blood vessels structures
Tunica intima - internal - endothelium
Tunica media -middle -smooth muscles and elastic fibres
Tunica adventita -external -connective tissues
