Question

Cortisol and insulin are synergistic in their actions. Select one True O False As a result of cold environmental temperatures. T3T4 production- Select one a remains unchanged b increases c:decreases

Answer 1

Answer 1. False

Explanation: Cortisol also known as hydrocortisone is a hormone which is released by the adrenal cortex. It falls under the sub class of the glucocorticoids. Glucocorticoids includes three main hormones namely cortisol, cortisone and corticosterone among which cortisol is the most abundant accounting for almost 95% of the total volume.

Its functions include:

1. Gluconeogenesis ; that is stimulates the liver for the synthesis of the carbohydrates from the non carbohydrate sources like amino acids and glycerol.

It thus increases the glucose level in the blood.

Insulin which is releasedby the beta cells of the pancreas reduces the bllod glucose levels and converts them to the glycogen

Hence it has an anti insulin effect

Other functions include:

It stimulates the degradation of the proteins within the cells

It also helps in reducing the pain

It has an anti inflammatory effect

It acts as an immunosuppressant

It stimulates the breakdown of the fats in adipose tissues meant to release the fatty acids in the blood

Answer 2. T4/T3 increases

Explanation: T4 is thyroxin and T3 is Triiodothyronine. These are the hormones which are released by the thyroid gland. One of the major functions of these hormones is-

They are involved in the regulation of the metabolic rate of our body; that is they regulate the BMR (Basal Metabolic Rate). They are helpful in maintaining the body temperature as they are involved in increasing the heat production.

During winters, as the outside condition and the temperature drops, in order to maintain and regulate the internal temperature to that of the external surroundings; thyroid glands had to work harder that is they increase the intensity of the hormone production.