4.
During childbirth stretching of the uterus triggers the
secretion of the hormone oxytocin, which stimulates uterine contractions and speeds up labor and
delivery of a baby.
5.
The body regulates blood pressure in a process in which
nerves sense the blood flow resistance associated with higher blood pressure; the nerves relay
this message to the brain; the brain then slows down the heart rate and dilates the blood
vessels, lowering the blood pressure. ARE THESE NEGATIVE OR POSITIVE FEEDBACK