Which female reproductive system disorder is characterized by the growth of noncancerous tumors in the uterus?
A. Endometriosis
B. Cervical cancer
C. Fibroids
D. Breast cancer
Answer: C
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During childbirth, as a baby's head is pressed against the mother's cervix, signals are relayed via nerves from cervix to the mother's brain. The brain initiates the secretion of oxytocin (a hormone) from the mother's pituitary gland. Oxytocin stimulates further uterine contractions. As the uterus contracts even harder in response to oxytocin, the baby's head is pushed harder against the cervix; this stimulates yet more nerve signals to the mother's brain, resulting in yet more oxytocin secretion until finally the baby is pushed through the cervix. The effector in this process of childbirth is
A. the mother's cervix. B. the mother's pituitary gland. C. oxytocin. D. the mother's brain. E. the nerve signals to the mother's brain.
The common triggers for non-allergic asthma are stress related.
a. true b. false
Enamel is found in the crown of a tooth, whereas dentin is part of both the crown and the root.
Answer the following statement true (T) or false (F)
Blood glucose concentration rises after a meal and stimulates the pancreas to release the hormone insulin. Insulin travels in the blood and stimulates the uptake of glucose by body cells from the bloodstream, thus reducing blood glucose concentration. This is an example of ________.
A. positive feedback B. integration control C. set point adjustment D. negative feedback E. dynamic equilibrium