Which of the following is not an involuntary action?

Which of the following statements about transmission of nerve impulse is incorrect?

Involuntary action in the body are controlled by:

When a person is suffering from severe cold, he or she cannot:

Which of the following statements are true?

(i) Sudden action in response to something in the environment is called reflex action

(ii) Sensory neurons carry signals from spinal cord to muscles

(iii) Motor neurons carry signals from receptors to spinal cord

(iv) The path through which signals are transmitted form a receptor to a muscle or a gland is called reflex arc.