In what form is the response to a stimulus generally observed in body parts?

Which is the correct sequence of the components of a reflex arc?

Which system facilitates the communication between the central nervous system and other parts of the body?

Label the endocrine glands in the figure.

$(a)$ Name the part of the brain which controls:
$(i)$ voluntary actions,
$(ii)$ involuntary actions.
$(b)$ What is the significance of the peripheral nervous system? Name the components of this nervous system and distinguish between the origin of the two.

Which of the following helps in maintaining the posture and balance of the human body?