For a cell to successfully receive a message from a hormone, which of the following must occur? A: The hormone must attach to the cell's receptor.
B: The hormone must enter the cell.
C: The hormone must produce neurotransmitters.
D: The hormone must be destroyed.​

B. the hormone must enter the cell

A: The hormone must attach to the cell's receptor.

the sphincter muscles at the end of the digestive tract is the anus.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.