The extra-embryonic membrane that forms a fluid-filled sac is the
A) yolk sac.
B) amnion.
C) allantois.
D) All of the answers are correct.
E) None of the answers is correct.
Answer: B
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A pole vaulter keeps track of his position in mid-air through
A. pain receptors. B. lamellated corpuscles. C. proprioceptors. D. baroreceptors.
The muscle that provides the major force for producing a specific movement is called the ________
A) antagonist B) agonist C) synergist D) origin
A patient underwent a partial gastrectomy. As a result of this procedure, the patient ________.
A. may become hypoglycemic due to impaired carbohydrate digestion B. may require regular vitamin B12 injections C. may experience an irregular increase in hunger due to increased ghrelin secretion D. would have an increased risk of peptic ulcers and gastroesophageal reflux disease
When a person blinks, she is using her
A. orbicularis oculi. B. orbicularis oris. C. procerus. D. occipitofrontalis muscle. E. depressor labii inferioris.