Author Question: A portal system is A) an area connecting arterioles to venules. B) a series of (Read 413 times)

luvbio

  • Hero Member
  • *****
  • Posts: 623
A portal system is
A)  an area connecting arterioles to venules.
B)  a series of vessels that returns blood to the heart in an animal with an open circulatory system.
C)  a space within or between organs where blood is allowed to pool.
D)  a slightly muscular vessel that has minimal pumping action in an organism with no heart.
E)  a vessel or vessels connecting two capillary beds.



coco

  • Hero Member
  • *****
  • Posts: 739

Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

For a complete list of videos, visit our video library