Cardivascular system - at rest

Question 1

What are the heart chambers ?

Answer 1

Right atrium
Left atrium
Right ventricle
Left ventricle

Question 2

What are the heart valves ?

Answer 2

Tricuspid valve
Bicuspid valve
Pulmonary semilunar valve
Aortic semilunar valve

Question 3

Why are the blood vessels that attach to the heart ?

Answer 3

Vena cava
Pulmonary artery
Pulmonary vein
Aorta

Question 4

What are the features of the conduction system ?

Answer 4

SA node
AV node
Bundle of his
Purkinje fibres

Question 5

the blood flow through the right hand side of the heart

Answer 5

Vena cava
Right atrium
Tricuspid valve
Right ventricle
Pulmonary semi lunar valve
Pulmonary artery
Lungs

Question 6

The blood flow through the left hand side of the heart

Answer 6

Pulmonary vein
Left atrium
Bicuspid valve
Left ventricle
Aortic semilunar valve
Aorta
Body tissues

Question 7

What is the flow of blood on the left hand side of the heart called ?

Answer 7

Pulmonary circulation

Question 8

What is the flow of blood on the right hand side of the heart called ?

Answer 8

Systemic circulation

Question 9

What is the conduction system ?

Answer 9

Specialised bundle of tissues that transmit electrical impulses to the heart which cause coordinated contraction.

Question 10

Explain the conduction system.

Answer 10

1. SA node
   In wall of atrium, sends impulse across both atria causing atrial systole.
2. AV node
   In the middle wall of heart (between atria and ventricle). Received impulse from SA node, delays for a moment to allow for atrial systole to finish and sends impulse down to bundle of his.
3. Bundle of his
   In wall of heart. Transmit impulse to the bottom of the right and left side of heart.
4. Purkinje fibres
   In walls of ventricles, causes the impulses to penetrate into the ventricle walls causing ventricular systole.

Question 11

What is the heart rate definition ?

Answer 11

The number of times the heart beats per minute

Question 12

What is the stroke volume definition ?

Answer 12

The amount of blood ejected from the left ventricle per beat

Question 13

What is the cardiac outfit definition ?

Answer 13

The amount of blood ejected from the left ventricle per minute

Question 14

What are the average values at rest ?
(HR, SV & Q)

Answer 14

70 bpm
70 ml
5 L/min

Question 15

What are the endurance athletes values at rest ?
(HR, SV & Q)

Answer 15

50 bpm
100 ml
5l/min

Question 16

What is starlings law ?

Answer 16

SV depends on VR (volume of blood returning to the heart).
If VR increases SV increases.