Which statement is true about oxytocin's role in childbirth?
A. Oxytocin targets the fetus to push on the cervix.
B. Oxytocin is released by the uterus as it contracts, causing more contractions until the baby is born.
C. Oxytocin suppresses uterine contractions.
D. Oxytocin stimulates uterine contractions.
Answer: D
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The electron transport system doesn't produce ATP directly instead it uses the hydrogen ion gradient to drive
A) substrate-level phosphorylation. B) chemiosmosis. C) anaerobic metabolism. D) decarboxylation. E) deamination.
The inferior vena cava carries blood __________ the ___________ of the heart.
away from; left atrium to; left atrium away from; right atrium to; right atrium
What unit of bone consists of a central canal (containing blood vessels, nerves, and lymph vessels) surrounded by concentric rings of calcified matrix?
A. Osteocyte B. Canaliculus C. Osteon D. Lamella E. Trabeculum
Central adaptation refers to
A) the decline in activity of peripheral receptors when stimulated. B) a characteristic of phasic receptors. C) inhibition of nuclei located along a sensory pathway. D) increases in conscious perception of a sensory stimulus. E) a change in motor receptivity of a neuron.