How many primary oocytes does a female have by the onset of puberty?
A. 400,000
B. 500,000
C. 1 million
D. 2 million
E. 1,000
A. 400,000
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Which is not a characteristic of the hormone oxytocin?
a. it stimulate uterine contractions. b. it promotes milk ejection from mammary gland ducts. c. it influences bonding behavior between mother and baby. d. it is a tropic hormone. e. none of these answers.
The glial cells that help produce and circulate cerebrospinal fluid in the CNS are
a. satellite cells. b. microglia. c. ependymal cells. d. astrocytes.
In a healthy person, which of the following will have the greatest influence on resistance to pulmonary airflow?
A. Contraction of the diaphragm B. Atmospheric pressure C. Respiratory rate D. Quantity of surfactant E. Bronchiole diameter
A chemical produced in a cell that activates specific processes in response to a hormone interaction with a membrane-bound receptor is referred to as a/an ________.
A. messenger RNA B. hormone response element C. intracellular mediator D. transcription factor