Melatonin is a hormone made by the pineal gland, a small gland in the brain. Melatonin helps control your sleep and wake cycles. Use the Internet to research how the nervous and endocrine systems control the production and release of melatonin and how melatonin controls your sleep and wake cycles. Evaluate each statement below and select the statement that best describes the pathway.

Select one:

Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to wake up.

 Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to wake up.

Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to stop producing melatonin, signalling the body to go to sleep.

. Light on the retina stimulates the hypothalamus to send a signal to the pineal gland to increase the production of melatonin, signalling the body to go to sleep.

 

 

 

When the blood pressure drops, the body responds by

Select one:

 decreasing ADH production to decrease vasoconstriction

 increasing ADH production to increase urine volume

 increasing ADH production to increase vasoconstriction

 decreasing ADH production to decrease urine volume

 

 

Nephrogenic diabetes insipidus is a condition where ADH is released by the posterior pituitary but the cells in the kidneys are unable to respond to ADH. This is in contrast to neurogenic diabetes insipidus where the body does not produce enough ADH. When the kidneys are unable to respond to ADH, the urine formation ______ and ADH secretion _______. Which of the following rows correctly completes the sentence above?

Select one:

a.  Urine Formation ADH Secretion Increases Increases in response to decreased water retention

b.  Urine Formation ADH Secretion Decreases Decreases in response to increased water retention

c.  Urine Formation ADH Secretion Decreases Increases in response to increased blood pressure

d.  Urine Formation ADH Secretion Increases Decreases in response to decreased blood pressure 

 

 

 

In an emergency situation, fluids are given intravenously to a patient. The fluids increase the blood volume. Increasing the blood volume can help to increase the patient’s blood pressure.A hormone in the body that increases blood pressure and the mechanism it uses to do this are, respectively

Select one:

Hormone  Mechanism  Oxytocin  Decreases smooth muscle contractions 

Hormone  Mechanism  ADH  Increases water absorption in the kidneys 

Hormone  Mechanism  ADH  Decreases water absorption in the kidneys 

Hormone  Mechanism  Oxytocin 

Increases smooth muscle contractions 

5 years ago

Answered By Michael M

When blood pressure drops, ADH production increases to increase vasoconstriction.

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