Part 2 Flashcards
Arteries has highly elastic walls to keep blood flowing g in the right direction and also allows the artery to contract. The arteries carries blood..
away from the heart
The arteries are red in colour to not be confused with veins, arteries contain oxygenated blood
Veins has thin rigid walls but does not contract on their own. They have one way valves which is important to counteract the force of gravity and carries blood..
back to heart
The veins are blue in colour but not actually, they contain deoxygenated blood
Varicose veins occur when..
the valves fail to close properly, causing blood to flow backwards and pool in veins
Capillaries connect the arteries and veins to tissues. The are important as they are the site of..
gas exchange in the circulatory system
Capillaries are composed of a single layer of cells and they are much smaller and more w..
widespread than arteries and veins
In blood vessels, there are 3 pathways..
Systemic pathway
pulmonary pathways
Coronary pathways
In a Systemic pathway, this pathway moves blood between..
the heart and the rest of the body
In a Systemic pathway, sends oxygenated blood to..
cells and brings deoxygenated blood to heart
in a pulmonary pathway, this pathway moves blood between..
heart and lungs
In a pulmonary pathway, deoxygenated blood is carried from heart to lungs where it absorbs oxygen and releases carbon dioxide. Oxygenated blood is formed then it gets transferred from..
lungs to the heart
The coronary pathway supplies what with oxygen?..
The coronary pathway supplies the muscles of the heart with oxygen
Blood pressure measures the pressure that is exerted against the..
walls of the heart as blood is transported throughout the body
Blood pressure is measured as a ratio of systoic/diastolic pressure. A normal blood pressure ratio is..
120/80
Maximum blood pressure during ventricular contraction =
systolic pressure
Minimum pressure BEFORE ventricular contraction =
Diastolic pressure
