1. Within the embryo, the spinal cord is formed by A) folding of the outer tissu

Question

1. Within the embryo, the spinal cord is formed by A) folding of the outer tissue layer B) bulging out of the abdominal wall C) an extension of the digestive tract D) an outgrowth from the embryonic brain 2. Fraternal (dizygotic twins) A) occur from a single sperm fertilizing a single egg B) have the same genetic makeup as each other C) must be both males or both females D) exist in two separate placentas 3. According to Dr. Neumann's lecture, what information is included in a birth plan? A) where the birth will take place B) who will be present during the birth C) what to do in case of medical emergency D) all of the above, and potentially more 4. What occurs during the last stage of childbirth? A) the "water (amniotic sac) breaks B) expelling of the placenta C) contractions of labor D) cervical dilation

Explanation / Answer

1. Spinal cord is formed by folding of central pprtion of ectodermal tissue firming neural plate as grove then a tube open at both ends.this tube forms whole nervous system. So answer is A) folding of outer tissue.

2. Fraternal twins are result of two fertilization of two eggs with two sperm. They have nothing in common except sharing same place in womb.

So answer is D exist in two separate placenta.

3. D. All of above.

4. Last stage of childbirth is B expelling of placenta.

Sequence of events is cervical dilation,amniotic sac breaks, contractions of labor and expelling of placenta.

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