Lecture 6

Question 1

Systemic Circulation

Answer 1

• All systemic arteries branch from the aorta
• All systemic veins drain into the superior or inferior vena cava or coronary sinus to return to the right-side of heart

Question 2

Arterial Branches of Systemic Circulation:

Answer 2

• All are branches from aorta supplying arms, head, lower limbs and all viscera with O2 from the lungs
• Aorta arises from left ventricle (thickest chamber)

Question 3

Aorta is:

Answer 3

largest artery of the body

• ascending aorta
• arch of aorta
• thoracic aorta

Question 4

Subclavian Branches:

Answer 4

-Subclavian arteries pass superior to the 1st rib
–gives rise to vertebral a. that supplies blood to the Circle of Willis on the base of the brain
Become the axillary artery in the armpit
-Become the brachial in the arm
-Divide into radial and ulnar branches in the forearm

Question 5

Common Carotid Branches

Answer 5

External carotid arteries (external to skull)

Internal carotid arteries (eyeballs and brain)

Question 6

Abdominal Aorta and Its Branches

Answer 6

• Supplies abdominal & pelvic viscera & lower extremities
  
  • –celiac, superior/inferior mesenteric, renal, gonadal arteries
• Splits into common iliacaa at 4th lumbar vertebrae
  - –external/internal iliac artery

Question 7

Visceral Branches off Abdominal Aorta:

Answer 7

-Celiac artery is first branch inferior to diaphragm
stomach, splenic artery, common hepatic artery
-Superior mesenteric artery lies in mesentery
- small intestines
-Inferior mesenteric artery
descending colon, sigmoid colon & rectal aa

Question 8

Arteries of the Lower Extremity:

Answer 8

• External iliac artery become femoral artery when it passes under the inguinal ligament & into the thigh
  
  • -femoral artery becomes popliteal artery behind the knee