Which fetal circulatory structure shunts blood from the pulmonary trunk to the aorta?
A. Umbilical vein
B. Ductus venosus
C. Foramen ovale
D. Ductus arteriosus
E. Umbilical artery
Answer: D
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Fill in the blank(s) with correct word
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A. Hydrocortisone B. Norepinephrine C. Antidiuretic hormone D. Aldosterone
Most transmembrane proteins have ________ regions facing the intra- and extracellular fluid, and ________ regions embedded in the phospholipid bilayer.
A. hydrophilic; hydrophilic B. hydrophobic; hydrophilic C. hydrophilic; hydrophobic D. hydrophobic; hydrophobic E. lipophilic; lipophobic
The cessation of bleeding is specifically called ________.
A. hemostasis B. platelet plug formation C. homeostasis D. a vascular spasm E. coagulation