small thin-walled vessels between the smallest arteries and the smallest veins.
What is capillaries
100
The heart is surrounded by which cavity
What is pericardial cavity
100
These cells control and coordinate the activity of the contractile cells
What is conducting
100
The period between the start of one heartbeat and the start of the next is a single.....?
What is cardiac cycle
100
The amount of blood pumped by each ventricle in one 1 minute
What is cardiac output (CO)
200
What carries blood away from the heart and which carries blood to the heart?
What is arteries and veins
200
A deep groove usually filled with fat which is a border between the atria and ventricles
What is coronary sulcus
200
these cells are responsible for establishing the rate of cardiac contraction
What is nodal cells
200
Another word for contraction
What is systole
200
The flow of venous blood to the heart
What is venous return
300
This discharges blood into the pulmonary circuit
What is right ventricle
300
The inferior pointed tip of the heart
What is apex
300
Name the 3 steps of action potential
What is Rapid depolarization, the plateau, Repolarization
300
This is the phase of relaxation
What is Diastole
300
Major factors that regulate cardiac output (3)
What is blood volume reflexes, autonomic innervation and hormones
400
This collects blood from the pulmonary circuit
What is left atrium
400
delivers blood from the head, neck, upper limbs and the chest
What is superior vena cava
400
The pacemaker cells are located in which node
What is Sinoatrial node (SA)
400
The lubb of the lubb dupp sound of the heart is produced by which valves opening and which closing
What is AV valves close and the semilunar valves open
400
When this is released by the sympathetic neurons the heart rate increases
What is Norepinephrine
500
What are efferent vessels and afferent vessels
What is arteries and veins
500
Small tributaries from the branches of the left and right coronary arteries from interconnections are called
What is anastomoses
500
These convey the impulses to the contractile cells of the ventricular myocardium
What is Purkinje fibers
500
What is the pressure relationship during the systole and diastole phase
What is rises during systole and falls during diastole
500
A general rule (principle) when venous return increases suddenly and the myocardium stretches farther, the ventricles produce greater force upon contraction and stroke volume increases