Question

Trace a drop of blood from the aorta to the big toe, back to the heart, than to the small intestine.

Answer 1

The numbering represent the blood flow from one vessel to other.

Blood flow from the heart to toe is shown below:

1. Left ventricle
2. Aortic semilunar valve
3.   Ascending aorta
4.   Passes opening to Right and Left coronary arteries
5.   Arch of aorta
6.   Passes opening to brachiocephalic trunk
7.   Passes opening to Left common carotid artery
8.   Passes opening to Left subclavian artery
9.   Descending aorta
10.   Thoracic aorta
11.   Abdominal aorta
12.   Passes opening to celiac trunk
13.   Passes opening to superior mesenteric artery
14.   Passes opening to renal artery
15.   Passes opening to inferior mesenteric artery
16.   Common iliac artery
17.   External iliac artery
18.   Popliteal artery
19.   Anterior tibial artery
20.   Arcuate artery
21.   Dorsal metatarsal artery
22.   Dorsal digital artery
23. Dorsal digital vein.

Blood flow from toe to heart is shown below:

1.   Dorsal metatarsal vein
2.   Dorsal venous arch vein
3.   Anterior tibial vein
4.   Popliteal vein
5.   Femoral vein
6.   External iliac vein
7.   Common iliac vein
8.   Inferior vena cava
9.   Passes opening from renal vein
10.   Passes opening form hepatic vein
11.   Right atrium
12.   Tricuspid valve / right AV Valve
13.   Right ventricle
14.   Pulmonary semilunar valve
15.   Pulmonary trunk
16.   Right and left pulmonary arteries
17.   Lungs
18.   Right and left pulmonary veins
19.   Left atrium.

Blood flow from the heart to intestine:

1. abdominal aorta
2. superior mesenteric artery
3. branches of superior mesenteric artery
4. capillaries of small intestine.

INTESTINE

blood from intestine to heart:

5. branches of superior mesenteric vein
6. superior mesenteric vein
7. hepatic portal vein
8. hepatic veins
9. inferior vena cava
10. right atrium