give two hormones which has opposite effect.?

Question

see the endocrine system or hormones

Answer 1

An example of negative feedback is the regulation of the blood calcium level. The parathyroid glands secrete parathyroid hormone, which regulates the blood calcium amount. If calcium decreases, the parathyroid glands sense the decrease and secrete more parathyroid hormone. The parathyroid hormone stimulates calcium release from the bones and increases the calcium uptake into the bloodstream from the collecting tubules in the kidneys. Conversely, if blood calcium increases too much, the parathyroid glands reduce parathyroid hormone production. Both responses are examples of negative feedback because in both cases the effects are negative (opposite) to the stimulus.

Positive feedback mechanisms control self-perpetuating events that can be out of control and do not require continuous adjustment. In positive feedback mechanisms, the original stimulus is promoted rather than negated. Positive feedback increases the deviation from an ideal normal value. Unlike negative feedback that maintains hormone levels within narrow ranges, positive feedback is rarely used to maintain homeostatic functions.

An example of positive feedback can be found in childbirth. The hormone oxytocin stimulates and enhances labor contractions. As the baby moves toward the vagina (birth canal), pressure receptors within the cervix (muscular outlet of uterus) send messages to the brain to produce oxytocin. Oxytocin travels to the uterus through the bloodstream, stimulating the muscles in the uterine wall to contract stronger (increase of ideal normal value). The contractions intensify and increase until the baby is outside the birth canal. When the stimulus to the pressure receptors ends, oxytocin production stops and labor contractions cease.

Answer 2

Insulin and glucagon secreted by pancreas have opposite effect.Insulin lowers the blood glucose whereas glucagon increases the blood glucose.

Answer 3

Have only on thing to say talk to your doctor.
Maybe they complement each other in a certain way. That is the only reason I can think of but then again I´m not an MD.
Just advise

Answer 4

Besides the obvious (see above), the answer is insulin and glucagon.

Insulin converts blood sugar to glycogen for storage - lack of it results in diabetes.

Glucagon converts glycogen back to blood sugar for use.

Answer 5

Insulin and glucagon.

Insulin decreases the blood glucose concentration, whereas glucagon increases it.

Answer 6

They work antagonistically.

Answer 7

testosterone and estrogen