Cardio

Question 1

PR interval

Answer 1

Conduction through the AV node

Question 2

ST segment

Answer 2

Period of zero potential between ventricular depolarisation and repolarisation

Question 3

QRS complex

Answer 3

Ventricular depolarisation

Question 4

Where are baroreceptors found?

Answer 4

Carotid sinus and aortic arch

Question 5

What is the L atria developed from?

Answer 5

4 primitive pulmonary veins

Question 6

What is the R atrium developed from?

Answer 6

Primitive atrium and sinus venosus

Question 7

What is the R ventricle developed from?

Answer 7

Bulbis cordis

Question 8

What is the L ventricle developed from?

Answer 8

Primitive ventricle

Question 9

When does the heart start beating?

Answer 9

day 22

Question 10

Aortic valve sound

Answer 10

3rd intercostal space - right

Question 11

Tricuspid valve sound

Answer 11

4th intercostal space

Question 12

Pulmonary valve sound

Answer 12

2nd intercostal space -left

Question 13

Bicuspid valve sound

Answer 13

5th intercostal space

Question 14

% involved in dominance

Answer 14

70% right
10% left
20% co dominant

Question 15

Where does the aorta pierce the diaphragm

Answer 15

T12

Question 16

Where does the oesophagus pierce the diaphragm

Answer 16

T10

Question 17

Where does the IVC pierce the diaphragm

Answer 17

T8

Question 18

Where does the superior mess enteric artery come off the abdominal aorta?

Answer 18

l1

Question 19

Where does the renal artery come off the abdominal aorta?

Answer 19

L1-L2

Question 20

Where does the inferior mesenteric artery come off the abdominal aorta?

Answer 20

L3

Question 21

P wave

Answer 21

Atrial depolarisation

Question 22

What is the Frank Starling Mechanism?

Answer 22

The stroke volume of the heart increases as the end diastolic volume increases when all the other factors stay the same

Question 23

Name a potent vasodilator

Answer 23

Prostacyclin

Question 24

Name a potent vasoconstrictor

Answer 24

Endothelium

Question 25

What is the endothelium derived relaxing factor

Answer 25

Nitric oxide (NO)

Question 26

How is interstitial fluid returned to the CV system

Answer 26

1) thoracic duct

2) left subclavian vein

Question 27

What is vasculogenesis

Answer 27

When blood islands form in the mesoderm forming blood cells and vessels

Question 28

What is the aortic vestibule?

Answer 28

• an embryonic derivative of the bulbis cordis
• smooth walled
• outflow of left atria?

Question 29

What are the branches of the aortic arch?

Answer 29

Brachiocephalic
Left common carotid
Left subclavian

Question 30

What does the internal thoracic split into?

Answer 30

Superior epigastric

Muscularphrenic

Question 31

What is the blood supply of the anterior chest?

Answer 31

Internal thoracic