Question

directions: select each correct answer. more than one answer may be correct.
which of the following is an example of two or more body systems interacting to maintain homeostasis?
when calcium levels in the blood are low, hormones cause calcium to be released from bones.
when body temperature is high, signals from the brain cause increased blood flow to the skin.
when too much salt is consumed, it is filtered out of the blood by the kidneys and excreted.

Explanation:

• For the first option: The endocrine system (hormones) and skeletal system (bones) interact. Hormones (endocrine) act on bones (skeletal) to release calcium, helping maintain blood - calcium homeostasis.
• For the second option: The nervous system (brain signals) and circulatory system (blood flow) interact. Brain (nervous) signals increase blood flow (circulatory) to skin for heat dissipation, maintaining body - temperature homeostasis.
• For the third option: The excretory system (kidneys) and circulatory system (blood) interact. Kidneys (excretory) filter salt from blood (circulatory) and excrete it, maintaining salt - balance homeostasis.

Answer:

All of the options (When calcium levels in the blood are low, hormones cause calcium to be released from bones; When body temperature is high, signals from the brain cause increased blood flow to the skin; When too much salt is consumed, it is filtered out of the blood by the kidneys and excreted) are correct.