Blood Vessels, Circulation, and Electrical System

Question 1

blood vessels

Answer 1

• function is transportation of blood throughout the body
• there are arteries, arterioles, veins, venules, and capillaries
• arteries carry blood away from the heart
• veins carry blood to the heart
• capillaries connect arteries to veins and this is where gasses, nutrients and waster products are exchanged with the cells in the body
• arteries get smaller going away from the heart; veins get larger heading to the heart

Question 2

systemic and pulmonary circulation

Answer 2

• pulmonary circulation is the flow of blood only between the heart and lungs
• systemic circulation includes the flow of blood to all parts of the body except the lungs
• the coronary arteries are part of the systemic circulation, provide blood to the myocardium

Question 3

electrical system of heart

Answer 3

• also known as conduction system

- cardiac muscle can conduct electrical impulse

Question 4

pulse

Answer 4

rhythmic pressure against the walls of an artery caused by the contraction of the heart

Question 5

blood pressure

Answer 5

the measurement of the pressure exerted against the walls of the arteries

Question 6

systolic pressure

Answer 6

highest (first) pressure occurs when the ventricles contract

Question 7

diastolic pressure

Answer 7

lower (second) pressure occurs when the ventricles relax

Question 8

b marks what structure

Answer 8

atrioventricular node

Question 9

d marks what structure

Answer 9

bundle branches