What thin membrane, continuous with the epiblast layer, secretes fluid to bathe the embryo?
A. Yolk sac
B. Amnion
C. Corona radiata
D. Chorion
Answer: B
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Which veins drain blood from the diaphragm?
A) phrenic veins B) hepatic veins C) adrenal veins D) renal veins
Explain why humans should avoid drinking salt water
What will be an ideal response?
The sinoatrial node sets the heart rate by sending its impulse to the atrioventricular node for distribution.
Answer the following statement true (T) or false (F)
Harrison loves to entertain his classmates with his strange talents. His newest "trick" is to roll his tongue into a tube shape. Which muscles are important for Harrison to perform this trick?
A. Buccinator B. Extrinsic muscles of the tongue C. Intrinsic muscles of the tongue D. Both "Intrinsic muscles of the tongue" and "Buccinator" are correct.