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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. Cells at the tip of each neural fold and give rise to sensory ganglia - autonomic ganglia - adrenal medulla - and Schwann cells
Neural Crest Cells
Fertilization
Gastrulation
Allantois
2. Sac-like structure is involved in respiration and excretion and contains numerous blood vessels to transport (2 - CO2 - water - salt - and N wastes
Internal Development
Morula
Allantois
Endoderm
3. Epithelial linings of the digestive and respiratory tracts (including the lungs) and parts of the liver - pancreas - thyroid - and bladder lining
External Development
Fraternal Twins
Endoderm
Neural Crest Cells
4. 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
Childbirth
External Development
Yolk Sac
Placental Internal Development
5. Solid ball of embryonic cells when cell division occurs
Morula
Cleavage
Endoderm
Amnion
6. Musculoskeletal system - circulatory system - excretory system - gonads - connective tissue throughout the body - and portions of digestive and respiratory organs
Organogenesis
Allantois
Mesoderm
Labor
7. 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
Endoderm
Mesoderm
Neurulation
8. A series of rapid mitotic divisions in early embryonic development -lead to an increase in cell number without a corresponding growth in cell protoplasm
Cleavage
Blastula
Second Stage of Labor
Blastulation
9. 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
Gastrulation
Gametogenesis
Fertilization
Neurulation
10. Characterized by rapid contractions - resulting in the birth of the baby - folllowed by the cutting of the umbilical cord
Notochord
Labor
Morula
Second Stage of Labor
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
Second Stage of Labor
Blastula
Nonplacental Internal Development
Allantois
12. The embryo develops within the egg - feeding on nutrients stored in the yolk
Nonplacental Internal Development
Notochord
Organogenesis
External Development
13. Includes organogenesis - growth - gametogenesis
Blastula
Second Trimester
Internal Development
Gametogenesis
14. Lines the inside of the shell. it is a moist membrane that permits gas exchange
Cleavage
Third Trimester
Allantois
Chorion
15. Uterus contracts - expelling the placenta and the umbilical cord
Allantois
Third Trimester
Final Stage of Labor
Fraternal Twins
16. A series of strong uterine contractions
Labor
Blastulation
Fertilization
Yolk Sac
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
Embryology
Third Trimester
First Stage of Labor
Allantois
18. Eggs develop in women and sperm develop in men - which results in the possibility of reproduction occuring
Growth
Neural Crest Cells
Allantois
Gametogenesis
19. Fluid-filled cavity developed through blastulation
Yolk Sac
Placental Internal Development
Blastocoel
Allantois
20. 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
First Trimester
Allantois
Second Trimester
Neural Crest Cells
21. A rod of mesodermal cells that develops along the longitudinal axis just under the dorsal layer of ectoderm
Fraternal Twins
Blastocoel
Second Trimester
Notochord
22. Process that - by the end of gastrulation - regions of the germ layers begin to develop into a rudimentary nervous system
Embryology
Morula
Neurulation
Amnion
23. Organs increase in size - which is a continual process from infancy to childhood to adulthood
Growth
Fertilization
First Trimester
Gametogenesis
24. The study of the development of a unicellular zygote into a complete - multicellular organism
Blastulation
Embryology
Organogenesis
Gametogenesis
25. 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
Morula
Mesoderm
Cleavage
First Trimester
26. Begins when the morula develops a blastocoel
Amnion
First Stage of Labor
Blastulation
Third Trimester
27. Accomplished by labor
Childbirth
Gametogenesis
Neurulation
External Development
28. Membrane encloses the amniotic fluid. amniotic fluid provides an aqueous environment that protects the developing embryo from shock
Second Trimester
Amnion
Fraternal Twins
Endoderm
29. Encloses the yolk. blood vessels in the yolk sac transfer food to the developing embryo
Final Stage of Labor
Labor
Third Trimester
Yolk Sac
30. Cervix thins out and dilates - and the amniotic sac ruptures - releasing its fluids -contractions are relatively mild
Ectoderm
First Stage of Labor
Endoderm
First Trimester
31. If more than one egg is fertilized
Final Stage of Labor
Fraternal Twins
Placental Internal Development
First Trimester
32. Three-layered structure that is created when cell migrations - once implanted in the uterus - transform the single-cell layer of blastula
Morula
Gastrulation
Nonplacental Internal Development
Ectoderm
33. The body organs begin to form. in this process - the cells interact - differentiate - change physical shape - proliferate - and migrate
Cleavage
Mesoderm
Final Stage of Labor
Organogenesis
34. 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
Blastulation
Ectoderm
Final Stage of Labor
Notochord