Final answer:
Myxedema is associated with hypothyroidism, an underactive thyroid condition. Hypersecretion involves excessive hormone production, such as cortisol in Cushing's syndrome. Cortisol, thyroid hormone, and glucagon all play roles in regulating metabolism.
Step-by-step explanation:
Myxedema is associated with hypothyroidism, which is an endocrine disorder where the thyroid gland is underactive and does not produce enough thyroid hormones. Hypothyroidism can lead to symptoms such as weight gain, cold sensitivity, and fatigue.
Hypersecretion refers to the excessive production of a hormone, and an example of an endocrine disorder involving hypersecretion is Cushing's syndrome, where there is hypersecretion of the cortisol hormone. Cushing's syndrome often results from a pituitary tumor that leads to excessive production of ACTH and consequently cortisol. Signs and symptoms may include rapid weight gain, especially in the trunk and face region, depression, and anxiety.
Regarding hormones that regulate metabolism, thyroid hormone, cortisol, and glucagon each play roles in metabolic regulation. Therefore, the answer would be D. All of the above.