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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.
If you are not ready to take this test, you can
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. Process that - by the end of gastrulation - regions of the germ layers begin to develop into a rudimentary nervous system
Labor
Final Stage of Labor
Third Trimester
Neurulation
2. Ex: marsupials and some tropical fish -without a placenta - exchange of food and oxygen between the young and the mother is limited
Fertilization
Chorion
Labor
Nonplacental Internal Development
3. Includes organogenesis - growth - gametogenesis
Notochord
Neurulation
External Development
Internal Development
4. If more than one egg is fertilized
First Trimester
Fraternal Twins
Fertilization
Ectoderm
5. Three-layered structure that is created when cell migrations - once implanted in the uterus - transform the single-cell layer of blastula
Gastrulation
Organogenesis
Blastula
Fertilization
6. Solid ball of embryonic cells when cell division occurs
External Development
Morula
Yolk Sac
Gastrulation
7. 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
Notochord
Second Trimester
First Trimester
Organogenesis
8. The embryo develops within the egg - feeding on nutrients stored in the yolk
Morula
Fraternal Twins
Neural Crest Cells
External Development
9. Lines the inside of the shell. it is a moist membrane that permits gas exchange
Chorion
Endoderm
Placental Internal Development
Blastula
10. 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
Labor
Endoderm
First Stage of Labor
Fertilization
11. Hollow sphere of cells of cells which is the blastocoel on the fourth day -the stage of the embryo that implants in the uterus
Chorion
Nonplacental Internal Development
Notochord
Blastula
12. Cells at the tip of each neural fold and give rise to sensory ganglia - autonomic ganglia - adrenal medulla - and Schwann cells
Blastocoel
Neurulation
Neural Crest Cells
Second Stage of Labor
13. 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
External Development
Neurulation
Placental Internal Development
Fertilization
14. Fluid-filled cavity developed through blastulation
Embryology
Organogenesis
Endoderm
Blastocoel
15. The body organs begin to form. in this process - the cells interact - differentiate - change physical shape - proliferate - and migrate
Second Stage of Labor
Gametogenesis
Organogenesis
Nonplacental Internal Development
16. 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
Amnion
First Trimester
Organogenesis
Fraternal Twins
17. Cervix thins out and dilates - and the amniotic sac ruptures - releasing its fluids -contractions are relatively mild
Blastula
First Stage of Labor
Morula
Ectoderm
18. A rod of mesodermal cells that develops along the longitudinal axis just under the dorsal layer of ectoderm
Notochord
Allantois
Growth
Labor
19. Sac-like structure is involved in respiration and excretion and contains numerous blood vessels to transport (2 - CO2 - water - salt - and N wastes
Second Stage of Labor
Fertilization
Allantois
Growth
20. Begins when the morula develops a blastocoel
Organogenesis
First Trimester
External Development
Blastulation
21. Musculoskeletal system - circulatory system - excretory system - gonads - connective tissue throughout the body - and portions of digestive and respiratory organs
Mesoderm
Yolk Sac
Final Stage of Labor
Labor
22. Epithelial linings of the digestive and respiratory tracts (including the lungs) and parts of the liver - pancreas - thyroid - and bladder lining
Placental Internal Development
Endoderm
Internal Development
Labor
23. Uterus contracts - expelling the placenta and the umbilical cord
Second Trimester
Embryology
Final Stage of Labor
Fraternal Twins
24. 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
Mesoderm
Third Trimester
Morula
Endoderm
25. A series of rapid mitotic divisions in early embryonic development -lead to an increase in cell number without a corresponding growth in cell protoplasm
Fraternal Twins
Final Stage of Labor
Gastrulation
Cleavage
26. The study of the development of a unicellular zygote into a complete - multicellular organism
Endoderm
Morula
Embryology
First Trimester
27. A series of strong uterine contractions
Labor
Fraternal Twins
Final Stage of Labor
First Trimester
28. Accomplished by labor
Allantois
Yolk Sac
Internal Development
Childbirth
29. 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
First Stage of Labor
Morula
Chorion
Ectoderm
30. Organs increase in size - which is a continual process from infancy to childhood to adulthood
Blastulation
Growth
Endoderm
Chorion
31. Membrane encloses the amniotic fluid. amniotic fluid provides an aqueous environment that protects the developing embryo from shock
Neural Crest Cells
Amnion
Blastula
Childbirth
32. Eggs develop in women and sperm develop in men - which results in the possibility of reproduction occuring
Blastulation
Gametogenesis
External Development
Neural Crest Cells
33. Encloses the yolk. blood vessels in the yolk sac transfer food to the developing embryo
Allantois
Third Trimester
Second Trimester
Yolk Sac
34. Characterized by rapid contractions - resulting in the birth of the baby - folllowed by the cutting of the umbilical cord
External Development
Cleavage
Second Trimester
Second Stage of Labor