Question

chapter 14 circulation and blood

1. involved in portal circulation
2. blood returns from the head and neck
3. blood from small intestine and colon
4. blood bladder and reproductive organs.

Explanation:

1. Portal circulation carries blood from digestive organs to the liver; the hepatic portal vein is the key vessel involved.
2. Blood from the head and neck drains into the superior vena cava via the jugular veins (internal and external jugular veins).
3. Blood from the small intestine and colon is transported to the liver through the hepatic portal vein as part of portal circulation.
4. Blood from the bladder and reproductive organs drains into the inferior vena cava via iliac veins (internal and external iliac veins).

Answer:

1. Hepatic portal vein (and associated vessels)
2. Internal and external jugular veins (draining to superior vena cava)
3. Hepatic portal vein
4. Internal and external iliac veins (draining to inferior vena cava)