The olfactory receptors in humans are located in:

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 electrical signals from spinal cord to muscles in a reflex action

(iii) motor neurons carry signals from receptors to spinal cord in a reflex action

(iv) the pathway of transmitting signals from a receptor to a muscle is a reflex action

The gustatory receptors of our body are in one of the following organs. This organ is:

The contraction of pupil of the eye in the presence of bright light is an example of:

The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is: