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23 January, 14:58

A portal system Multiple Choice includes a functional end artery that makes an arterial anastomosis. is one in which circulation to a large organ involves only one artery and one main (portal) vein. is one in which multiple arteries converge on one organ or body region. is a simple circulatory system with an areriovenous anastomosis. is one in which blood flows through two capillary beds before being sent back to the heart.

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  1. 23 January, 18:44
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    is one in which blood flows through two capillary beds before being sent back to the heart.

    Explanation:

    A portal system can be defined as a system of blood vessels having a capillary network at each end, meaning that the blood vessel starts and ends in capillaries, before finding its way back to the heart. The blood draining through the capillary bed flows via the larger vessel to supply the blood to the another structure's capillary bed.
  2. 23 January, 18:45
    0
    A portal system is one in which blood flows through two capillary beds before being sent back to the heart.

    Explanation:

    A portal system consists of one afferent arteriole that anastomoses and gives several capillaries and an efferent arteriole that also anastomoses and gives capillaries, these two capillaries are connected, forming a big capillary bed. The blood flows, fist through the afferent arteriole, then to the capillary bed of this arteriole, and from there it goes, to the capillary bed of the efferent arteriole to end in the efferent arteriole that leads the blood to the heart.
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