Lecture 11: Circulatory System

Question 0

What is a function end artery?

Answer 0

Ineffective anastomoses e.g coronary artery

Question 1

What is an end artery?

Answer 1

An artery that does not anastomoses e.g central artery of retina

Question 2

What is an anastomoses?

Answer 2

Collateral arteries which provide alternative supply of oxygen

Question 3

What does the brachiocephalic artery split into ?

Answer 3

Right subclavian artery and right common carotid artery

Question 4

To supply the posterior intercostal spaces the descending thoracic aorta splits to form what artery?

Answer 4

Posterior intercostal arteries (EXCEPT 1st and 2nd space)

Question 5

To supply anterior intercostal spaces 1-6 ?

Answer 5

Subclavian=> Internal thoracic artery =>Anterior intercostal

Question 6

To supple the anterior intercostal spaces 7-9?

Answer 6

Musculophrenic or superior epicanthic => anterior intercostal arteries

Question 7

The Internal thoracic arteries are a branch of what?

Answer 7

Subclavian artery

Question 8

Internal thoracic artery splits to form?

Answer 8

anterior intercostals, musculophrenic and superior epigastric ( bifurcates at 6th intercostal space)

Question 9

The anterior thoracic abdominal anastomoses forms between which arteries?

Answer 9

Superior epigastric and musculophrenic with the inferior epigastric

Question 10

What does the coeliac trunk supply?

Answer 10

Liver stomach pancreas, spleen and proximal part of duodenum

Question 11

What does the superior men’s enteric artery supply?

Answer 11

Distal end of duodenum, jejumn, ileum and ascending and transverse colon

Question 12

What does the inferior mesenteric artery supply?

Answer 12

Descending and sigmoid colon and rectum

Question 13

The axillary artery branches from?

Answer 13

Subclavian artery

Question 14

The axillary artery has 6 branches?

Answer 14

Thoraco-acromial
Superior thoracic
Lateral thoracic
Subscapular
Anterior circumflex humeral
Posterior circumflex humeral

Question 15

Where is the carotid pulse found?

Answer 15

Anterior to SCM at superior border of thyroid cartilage level

Question 16

Brachial pulse is found where?

Answer 16

Medial to biceps brachii

Question 17

Where is the radial pulse found?

Answer 17

Anatomical snuff box

Between extensor pollicis longus and brevis

Question 18

Where is the dorsalis pedis pulse felt?

Answer 18

Between tendons of extensor hallucis longus and extensor digitorum longus

Question 19

The SVC receives what blood vessels?

Answer 19

Brachiocephalic veins and azygis veins immediately before entering pericardial sac

Question 20

What is the venous drainage of the face?

Answer 20

External jugular vein=> subclavian=> brachiocephalic => superior vena cava

Question 21

What is the venous drainage of posterior thoracic wall?

Answer 21

Posterior intercostal veins=> azygos system of veins= SVC OR IVC

Question 22

What is the drainage of the anterior thoracic wall?

Answer 22

Musculophrenic/ superior epigastric veins=> internal thoracic=> brachiocephalic=> SVC

Question 23

The azygos vein originates at what level?

Answer 23

L1/L2

Question 24

The azygos veins arch anterior over the right lung root to join the?

Answer 24

SVC

Question 25

The azygos vein drains what? And then dumps it into SVC

Answer 25

Posterior body wall and some thoracic viscera

Question 26

The accessory hemiazygos vein drains which specific posterior intercostal veins?

Answer 26

4th-8th

Question 27

The accessory hemiazygos vein drains to the azygos vein at what vertebrae level?

Answer 27

T8

Question 28

The hemiazygos vein drains to the azygos vein at what level?

Answer 28

T9

Question 29

The hemiazygos vein drains the left posterior Intercostal veins at what specific level?

Answer 29

8th-11th

Question 60

The inferior epigastric artery is a branch of major artery?

Answer 60

from the external iliac artery

Question 61

What are vasa vasorum?

Answer 61

Small blood vessels on arteries supplying the artery

Question 62

The subclavian artery forms the axillary artery at what specific landmark?

Answer 62

First rib