The ___ is formal by the allantois, blood vessels, and yolk sac. A) amnion B) bo

Question

The ___ is formal by the allantois, blood vessels, and yolk sac. A) amnion B) body sulk C) chorion D) umbilical cord E) placenta The hormone that increases the flexibility of the pubic symphysis during pregnancy is A) oxytocin. B) progesterone. C) human chorionic gonadotropin. D) human placental lactogen. E) relaxin The placenta is a source of which of the following hormones? A) hCG R) relax in C) placental lactogen D) progesterone E) All of the answers are correct. Deoxygenated blood is carried to the placenta by the A) umbilical vein. B) umbilical arteries. The period of gestation when the rudiments of all major organ systems arc established is the ___ trimester. A) first B)second C) third

Explanation / Answer

39. ANS: E. placenta

40. ANS: E. Relaxin

During pregnancy in the human, hormones such as relaxin remodel this ligamentous capsule allowing the pelvic bones to be more flexible for delivery.

41. ANS: E. All of the answers is correct

The placenta is a source of the hCG, relaxin, placental lactogen, and progesterone hormones. the placenta is a major endocrine organ. It turns out that the placenta synthesizes a huge and diverse number of hormones

42. ANS: B. umbilical arteries

The umbilical vein carries oxygenated, nutrient-rich blood from the placenta to the fetus, and the umbilical arteries carry deoxygenated, nutrient-depleted blood from the fetus to the placenta

43. ANS: A. First

The period of gestation when the rudiments of all major organ systems are established is the First trimester.

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