Which of the following is a change that occurs in fetal circulation at birth?
A. Ductus venosus continues to carry blood to the liver
B. Foramen ovale closes to become the fossa ovalis
C. Umbilical arteries become the fossa ovalis
D. Ductus arteriosis opens
Answer: B
You might also like to view...
The retractable fold of skin covering the glans penis is the __________
Fill in the blank(s) with correct word
Hyp/o- means "above normal."
Answer the following statement true (T) or false (F)
Antigen-presenting cells (APCs) present fragments of cells so they can be recognized by ________
A) inteferon B) T cells C) macrophages D) antigens E) histamine
The first and second heart sounds are most directly related to
A. pulse pressure in the aorta. B. the contraction of the atria. C. vibrations that occur when the valves close. D. contraction of the papillary muscles. E. the flow of the blood.