Which of the following will increase the heart rate?
A. a rise in pH
B. an increase in the level of carbon dioxide in the blood
C. an increase in the level of blood oxygen
D. an increase in blood pressure
E. a decrease in the level of carbon dioxide in the blood
B
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The ductus venosus delivers blood to the
A) placenta. B) foramen ovalis. C) aorta. D) right atrium. E) inferior vena cava.
The hypothalamus synthesizes the hormones released by the anterior pituitary
Indicate whether the statement is true or false
The inferior termination of the sacral canal is an opening called the
A. anterior sacral foramen. B. sacral promontory. C. posterior sacral foramen. D. sacral hiatus.
Which structure is filled with vitreous humor?
A) Posterior cavity B) Inner neural layer C) Anterior cavity D) Middle vascular layer