Question

on a hot day, the skin of some people appears red. which two body systems act together to make this happen?
○ endocrine and integumentary
○ integumentary and circulatory
○ nervous and digestive
○ musculoskeletal and endocrine

Explanation:

The integumentary system (skin) and circulatory system work together on a hot day. Blood vessels in the skin dilate (vasodilation) to increase blood - flow to the skin's surface for heat dissipation, making the skin appear red.

Answer:

Integumentary and circulatory