This set of Human Anatomy Multiple Choice Questions & Answers (MCQs) focuses on “Embryo Separation”.
1. The ectoderm cells will become skeletal system.
a) True
b) False
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Explanation: Mesoderm cells become the skeletal system and muscular system. Ectoderm becomes epidermis, epithelial lining of mouth and rectum.
2. The anterior end of neural tube forms ____________
a) Notochord
b) Gonads
c) Brain
d) Gut
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Explanation: The anterior end of neural tube forms brain.
3. The placenta is delivered during second labor stage.
a) True
b) False
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Explanation: Placenta is delivered during the 3rd stage. 3rd stage is the shortest stage.
4. How many stages does parturition have?
a) 1
b) 2
c) 3
d) 4
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Explanation: Parturition is considered to have 3 stages. Parturition is labor and expulsion of the fetus.
5. Ectodermal cells thicken into placodes that develop into ___________
a) the spinal cord
b) peripheral nerves
c) sensory organs
d) skeletal muscles
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Explanation: Ectodermal cells thicken into placodes that develop into Sensory organs of the head. Placode is an area of thickening of the epithelium in the embryonic head ectoderm layer that gives rise to neurons and other sensory nervous system.
6. Organogenesis in the embryo is completed by the end of which stage of the pregnancy?
a) 3rd trimester
b) 1st month
c) 2nd trimester
d) 1st trimester
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Explanation: Organogenesis is a process by which the three germ layers develop into the organs. It is completed by the end of 1st trimester that is 3months.
7. In meroblastic cleavage the cleavage occurs in the ___________
a) placodes
b) blastodisc
c) trophoblast
d) yolk
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Explanation: Meroblastic cleavage is the incomplete cellular division found in embryos with large amounts of yolk. The cleavage occurs in blastodisc.
8. The embryo developed from somatic cells is called as _____________
a) embryoid
b) cybrid
c) callus
d) hybrid
View Answer
Explanation: Embryoid is 3 dimensional aggregates of pluripotent stem cells. Somatic cells are any cells other than the reproductive cells.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
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