The yolk sac
A. is the fetal half of the placenta.
B. becomes the umbilical cord vessels.
C. provides nutrition until the placenta is formed.
D. is the first site of blood cell formation.
Answer: D
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A) tRNA. B) rRNA. C) mRNA. D) proteins.
Which hormone is associated with emotional bonding between a mother and her infant?
A. Prolactin B. Oxytocin C. Estrogen D. Luteinizing hormone (LH) E. Follicle-stimulating hormone (FSH)
The talocrural joint is formed by the union of the ________, the ________, and the ________.
A. tibia; calcaneus; talus B. femur; tibia; patella C. tibia; fibula; calcaneus D. tibia; fibula; talus E. femur; calcaneus; talus
A failure of the palate to fuse medially results in a condition called ________ palate.
Fill in the blank(s) with the appropriate word(s).