The correct answer is - Adrenal glands and the thyroid both secrete hormones.
Explanation:
Adrenal glands are triangular glands that are located on top of kidneys and produce hormones cortisol and aldosterone. These hormones that are produced by adrenal glands help regulate metabolism, response to stress, immune system, and blood pressure.
Thyroid glands are located on the front of the neck and appeared like a butterfly shape, this gland produces thyroid hormones T3 and T4 mainly to regulate the metabolism of the person.
the main site of gas exchange is in the lungs between the alveoli and a family of really small blood vessels called capillaries. Which are placed in the walls of the alveoli.
