Question

A portal system is that in which
(a) a vein begins from an organ and ends in heart
(b) an artery breaks up in an organ & restarts by
the union of its capillaries
(c) the blood from gut is brought into kidneys
before it is poured into heart
(d) a vein breaks up in an organ into capillaries
& restarts by their union as a new vein in the
same organ

Answer 1

Answer:

A portal system is that in which

(a) a vein begins from an organ and ends in heart

hope its help uh bro

Answer 2

Option D

A portal system is that in which  a vein breaks up in an organ into capillaries  & restarts by their union as a new vein in the  same organ

Explanation:

• In the circulatory practice of animals, a portal venous system transpires when a capillary bed supplies into added capillary bed by veins, without first transpiring through the heart.
• Capillary beds and the blood vessels that unite them are deemed a section of the portal venous system.
• Samples of the before-mentioned systems incorporate the hepatic portal system, the hypophyseal portal system, and the renal portal system.
• The functional importance of such a system is that it deports stocks of one region instantly to a different region in approximately high concentrations.

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