A high level of progesterone stimulates myometrial contraction
Indicate whether the statement is true or false
F
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Which of the following illustrates a positive feedback mechanism?
A) Body temperature control B) Control of blood sugar C) Maintaining blood pressure D) Uterine contractions during childbirth
Angiotensin II stimulates the adrenal cortex to release aldosterone
Indicate whether this statement is true or false.
The intracellular digestive organelle of a cell is the
A. lipochrome. B. smooth endoplasmic reticulum. C. lysosome. D. rough endoplasmic reticulum. E. microtubule.
During the development of lymphocytes, some pre-T and pre-B cells survive and develop into cells capable of an immune response, this is referred to as ______ selection
However some cells are suppressed from responding to self antigens, this is referred to as ______ selection. A. negative; positive B. neutral; negative C. negative; neutral D. neutral; positive E. positive; negative