Question

what are the 2 humans body systems that detect changes and release signals in response to those changes?
○ nervous (brain and nerves) and endocrine (glands and hormones)
○ nervous and cardiovascular (heart and blood vessels)
○ endocrine and excretory (kidneys and bladder)
○ nervous and integumentary (skin)

Explanation:

The Nervous system uses neurons to detect changes and send electrical signals. The Endocrine system uses glands to secrete hormones (chemical signals) in response to changes. The Cardiovascular system circulates blood, Excretory system removes waste, and Integumentary system (skin) has protective/sensory roles but not primary signal - releasing for change response like Nervous and Endocrine.

Answer:

A. Nervous (brain and nerves) and Endocrine (glands and hormones)