Biology Forums - Study Force

The largest branches of the inferior vena cava are the
 A) lumbar veins.
  B) gonadal veins.
  C) hepatic veins.
  D) renal veins.
  E) adrenal veins.

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(Question 2) By the end of gestation, maternal blood volume normally increases by almost ________ percent.
 A) 20
  B) 25
  C) 50
  D) 80
  E) 100

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(Question 3) The gluteal, internal pudendal, obturator, and lateral sacral veins fuse to form the
 A) femoral circumflex vein.
  B) deep femoral vein.
  C) internal iliac vein.
  D) external iliac vein.
  E) common iliac vein.

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(Question 4) The epidermis and accessory structures of skin form from which germ layer?
 A) endoderm
  B) mesoderm
  C) epiderm
  D) ectoderm
  E) trophoderm

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(Question 5) The azygos vein is the major branch of the
 A) axillary vein.
  B) superior vena cava.
  C) inferior vena cava.
  D) common iliac vein.
  E) jugular vein.

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(Question 6) The primary nutrient source for early embryonic development that later becomes an important site for blood formation is the
 A) amniotic fluid.
  B) placenta.
  C) basal decidua.
  D) umbilical vein.
  E) yolk sac.

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(Question 7) Which of the these blood vessels is not a visceral branch of the thoracic aorta?
 A) intercostal arteries
  B) pericardial arteries
  C) bronchial arteries
  D) esophageal arteries
  E) mediastinal arteries

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(Question 8) The embryo becomes a fetus at
 A) the end of the first week.
  B) the end of the second week.
  C) the end of the eighth week.
  D) the end of the second trimester.
  E) the end of the third trimester.

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(Question 9) The most common site of a stroke is the
 A) anterior communicating artery.
  B) anterior cerebral artery.
  C) posterior communicating artery.
  D) posterior cerebral artery.
  E) middle cerebral artery.

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(Question 10) The separation between the inner cell mass and the trophoblast forms a fluid-filled chamber called the
 A) chorion.
  B) yolk sac.
  C) allantois.
  D) amniotic cavity.
  E) placenta.

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