Refer to the given figure. Identify P -T and select the correct statements regarding them.
(i) Gland P secretes a hormone which plays role in the development of immune system of body.
(ii) Gland Q transmits messages in the form of electrical impulses.
(iii)Hormone released by gland S, enhances blood pressure by stimulating contraction of smooth muscles of arterioles.
(iv) Hypersecretion of a hormone by gland R causes myxedema whereas its hyposecretion causes Graves' disease.
(v) Hormones secreted by gland T regulate the calcium and phosphate levels in blood.
