Explain the function and effect of over and under secretion of thyroxin and insulin. – NABTEB QUESTION

Function: Thyroxin: It controls growth and regulates cells functions.

Effects of over secretion:

1. Cells become over active
2. Enlarge growth behind the eyes pushing them upward forward (exophthalmos)
3. Increased heart beat
4. Loss of weight

Effects of under secretion

1. over weight
2. Low rate of metabolism/hypothyroidism
3. Low metal development and performance
4. development of goitre
5. retarded/arrested growth in infants/cretinism

Insulin
Function
1. Makes the liver to remove excess glucose from blood.
2. stimulates the cell to utilize glucose.

Effects of over secretion:

1. No known effect of over secretion.

Effects of under secretion:

1. Water moves out of the body tissues by osmosis into the blood.
2. Increased urine production.
3. Frequent thirst.
4. Dehydration.
5. Lose of weight.