Which statement best describes the function of the placenta?
A. It facilitates a two-way exchange of nutrients and waste materials.
B. It is a barrier that protects the developing baby from all harmful substances.
C. It functions as a one-way exchange of nutrients from the mother to the fetus.
D. It connects the mother's and the baby's blood supplies.
Answer: A
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The _____ vibrates against an opening in the cochlea, a snail-shaped organ within the inner ear
A) incus B) malleus C) ossicle D) stapes
Which of the following positions causes the talonavicular and calcaneocuboid joints to become less parallel and locks the foot to create a rigid lever?
A. Flexion of the subtalar joint B. Extension of the subtalar joint C. Pronation of the subtalar joint D. Supination of the subtalar joint
When toxic or potentially toxic substances build up in the food chain, the process is called
A. vector transmission. B. radiation sickness. C. bioloading. D. biomagnification.
A healthy way to deal with anger is to
A) count to ten to calm yourself. B) distract yourself with an activity you enjoy. C) avoid the people who make you angry. D) express it assertively.