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Test your basic knowledge |
PCAT Biology Vertebrate Embryology
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Subjects
:
pcat
,
biology
Instructions:
Answer 34 questions in 15 minutes.
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study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Fluid-filled cavity developed through blastulation
Mesoderm
Amnion
Blastocoel
Third Trimester
2. Integument (including the epidermis - hair - nails - and epithelium of the nose - mouth - and anal canal) - the lens of the eye - the retina and the nervous system
Second Stage of Labor
Ectoderm
Notochord
Blastulation
3. Cervix thins out and dilates - and the amniotic sac ruptures - releasing its fluids -contractions are relatively mild
Neural Crest Cells
Embryology
First Stage of Labor
Childbirth
4. A rod of mesodermal cells that develops along the longitudinal axis just under the dorsal layer of ectoderm
Final Stage of Labor
Organogenesis
Notochord
Endoderm
5. A series of rapid mitotic divisions in early embryonic development -lead to an increase in cell number without a corresponding growth in cell protoplasm
Second Trimester
Organogenesis
Cleavage
Chorion
6. Occurs in the lateral - widest portion of the oviduct when sperm traveling from the vagina encounter an egg -can occur within 12-24 hours after ovulation
Embryology
Ectoderm
Fertilization
First Trimester
7. This system not only supplies oxygen and nutrients to the fetus but removes CO2 and metabolic wastes as well -two components of this system are the placenta and umbilical cord - which both develop in the first few weeks after fertilization
First Stage of Labor
Labor
Placental Internal Development
Internal Development
8. Process that - by the end of gastrulation - regions of the germ layers begin to develop into a rudimentary nervous system
Neurulation
Chorion
Labor
Neural Crest Cells
9. Three-layered structure that is created when cell migrations - once implanted in the uterus - transform the single-cell layer of blastula
Notochord
Gametogenesis
Gastrulation
Final Stage of Labor
10. Eggs develop in women and sperm develop in men - which results in the possibility of reproduction occuring
Neural Crest Cells
Fraternal Twins
Mesoderm
Gametogenesis
11. Organs increase in size - which is a continual process from infancy to childhood to adulthood
Blastocoel
Chorion
Amnion
Growth
12. Ex: marsupials and some tropical fish -without a placenta - exchange of food and oxygen between the young and the mother is limited
Nonplacental Internal Development
Second Stage of Labor
Final Stage of Labor
Second Trimester
13. The body organs begin to form. in this process - the cells interact - differentiate - change physical shape - proliferate - and migrate
Internal Development
Organogenesis
First Trimester
Childbirth
14. If more than one egg is fertilized
Fraternal Twins
Second Stage of Labor
Allantois
Cleavage
15. Accomplished by labor
Blastula
Chorion
Childbirth
Nonplacental Internal Development
16. Lines the inside of the shell. it is a moist membrane that permits gas exchange
Chorion
Embryology
Second Stage of Labor
Gastrulation
17. Characterized by continued rapid growth and further brain development -antibodies are transported by highly selective active transport from the mother to the fetus for protection against foreign matter
Childbirth
Growth
Third Trimester
Morula
18. The embryo develops within the egg - feeding on nutrients stored in the yolk
First Stage of Labor
Embryology
Cleavage
External Development
19. Encloses the yolk. blood vessels in the yolk sac transfer food to the developing embryo
Childbirth
Blastula
Neurulation
Yolk Sac
20. Includes organogenesis - growth - gametogenesis
Mesoderm
Fraternal Twins
Internal Development
Placental Internal Development
21. The fetus does a termendous amount of growing -begins to move around in the amniotic fluid - its face appears human - and its toes and fingers elongate
Childbirth
Second Trimester
Yolk Sac
Morula
22. Begins when the morula develops a blastocoel
Blastulation
Embryology
Fraternal Twins
Internal Development
23. The study of the development of a unicellular zygote into a complete - multicellular organism
Notochord
Labor
Embryology
Yolk Sac
24. Sac-like structure is involved in respiration and excretion and contains numerous blood vessels to transport (2 - CO2 - water - salt - and N wastes
Endoderm
Allantois
Childbirth
Mesoderm
25. Membrane encloses the amniotic fluid. amniotic fluid provides an aqueous environment that protects the developing embryo from shock
Gametogenesis
Third Trimester
Yolk Sac
Amnion
26. A series of strong uterine contractions
Nonplacental Internal Development
Morula
Second Stage of Labor
Labor
27. Characterized by rapid contractions - resulting in the birth of the baby - folllowed by the cutting of the umbilical cord
Internal Development
Second Stage of Labor
Blastulation
Cleavage
28. Hollow sphere of cells of cells which is the blastocoel on the fourth day -the stage of the embryo that implants in the uterus
Neural Crest Cells
Blastula
Organogenesis
Allantois
29. Solid ball of embryonic cells when cell division occurs
Third Trimester
Fraternal Twins
Blastocoel
Morula
30. Epithelial linings of the digestive and respiratory tracts (including the lungs) and parts of the liver - pancreas - thyroid - and bladder lining
Endoderm
External Development
Fraternal Twins
Organogenesis
31. Uterus contracts - expelling the placenta and the umbilical cord
Neural Crest Cells
Organogenesis
Final Stage of Labor
Endoderm
32. Musculoskeletal system - circulatory system - excretory system - gonads - connective tissue throughout the body - and portions of digestive and respiratory organs
Mesoderm
Internal Development
Placental Internal Development
Blastulation
33. Cells at the tip of each neural fold and give rise to sensory ganglia - autonomic ganglia - adrenal medulla - and Schwann cells
Chorion
Neural Crest Cells
Yolk Sac
Blastula
34. Major organs begin to develop -cartilaginous skeleton begins to turn into bone by the seventh week -organs will form - brain is fairly developed - and the embryo is referred to as a fetus
Blastula
Blastulation
Second Trimester
First Trimester