Which of the following is a portal system? multiple choice heart → artery → arteriole → capillary bed → arteriole → capillary bed → venule → vein → heart heart → artery → arteriole → capillary bed → venule → vein → vein → heart heart → artery → vein → heart

Heart → artery → arteriole → capillary bed → arteriole → capillary bed → venule → vein → heart

Explanation:

A PORTAL SYSTEM refers to a system of blood vessels that begins and ends in capillaries. It involves blood passing through the capillaries of one structure TO a large vessel and LATER entering the capillaries of another structure before entering the HEART.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a