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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. 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
Endoderm
Allantois
2. Cells at the tip of each neural fold and give rise to sensory ganglia - autonomic ganglia - adrenal medulla - and Schwann cells
Ectoderm
Labor
Notochord
Neural Crest Cells
3. Lines the inside of the shell. it is a moist membrane that permits gas exchange
Chorion
Second Stage of Labor
First Stage of Labor
Allantois
4. Fluid-filled cavity developed through blastulation
Neural Crest Cells
Blastocoel
Neurulation
Embryology
5. A series of strong uterine contractions
Labor
Blastulation
Organogenesis
Chorion
6. If more than one egg is fertilized
Fraternal Twins
External Development
Mesoderm
Blastocoel
7. Characterized by rapid contractions - resulting in the birth of the baby - folllowed by the cutting of the umbilical cord
Final Stage of Labor
Second Stage of Labor
Second Trimester
Blastocoel
8. Organs increase in size - which is a continual process from infancy to childhood to adulthood
Nonplacental Internal Development
Blastulation
Growth
Gastrulation
9. Encloses the yolk. blood vessels in the yolk sac transfer food to the developing embryo
Blastula
Organogenesis
Yolk Sac
Gametogenesis
10. Includes organogenesis - growth - gametogenesis
Embryology
Internal Development
Yolk Sac
Organogenesis
11. 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
Gastrulation
Yolk Sac
Ectoderm
Mesoderm
12. Eggs develop in women and sperm develop in men - which results in the possibility of reproduction occuring
Second Trimester
Childbirth
Gametogenesis
Fertilization
13. The embryo develops within the egg - feeding on nutrients stored in the yolk
Second Stage of Labor
External Development
Yolk Sac
Notochord
14. 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
Chorion
Gastrulation
Yolk Sac
Placental Internal Development
15. 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
Fertilization
Morula
Internal Development
Ectoderm
16. Uterus contracts - expelling the placenta and the umbilical cord
Final Stage of Labor
Morula
Blastulation
Organogenesis
17. Process that - by the end of gastrulation - regions of the germ layers begin to develop into a rudimentary nervous system
Neurulation
Allantois
Blastocoel
Fertilization
18. Epithelial linings of the digestive and respiratory tracts (including the lungs) and parts of the liver - pancreas - thyroid - and bladder lining
Blastulation
Endoderm
Third Trimester
Nonplacental Internal Development
19. Solid ball of embryonic cells when cell division occurs
Chorion
First Trimester
Morula
Internal Development
20. Hollow sphere of cells of cells which is the blastocoel on the fourth day -the stage of the embryo that implants in the uterus
Blastulation
Placental Internal Development
Gametogenesis
Blastula
21. Accomplished by labor
Childbirth
First Trimester
Gastrulation
Blastulation
22. The body organs begin to form. in this process - the cells interact - differentiate - change physical shape - proliferate - and migrate
Morula
Embryology
First Stage of Labor
Organogenesis
23. Musculoskeletal system - circulatory system - excretory system - gonads - connective tissue throughout the body - and portions of digestive and respiratory organs
Mesoderm
Notochord
Allantois
Final Stage of Labor
24. 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 Stage of Labor
Nonplacental Internal Development
Growth
Cleavage
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
First Trimester
Mesoderm
Nonplacental Internal Development
Labor
26. Ex: marsupials and some tropical fish -without a placenta - exchange of food and oxygen between the young and the mother is limited
Labor
Nonplacental Internal Development
Gametogenesis
Neural Crest Cells
27. 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
Second Trimester
Cleavage
Third Trimester
Blastulation
28. Sac-like structure is involved in respiration and excretion and contains numerous blood vessels to transport (2 - CO2 - water - salt - and N wastes
Childbirth
Organogenesis
Internal Development
Allantois
29. The study of the development of a unicellular zygote into a complete - multicellular organism
Neural Crest Cells
First Stage of Labor
Blastulation
Embryology
30. Three-layered structure that is created when cell migrations - once implanted in the uterus - transform the single-cell layer of blastula
Internal Development
Fraternal Twins
Mesoderm
Gastrulation
31. Membrane encloses the amniotic fluid. amniotic fluid provides an aqueous environment that protects the developing embryo from shock
Amnion
Neurulation
Second Stage of Labor
Blastula
32. Cervix thins out and dilates - and the amniotic sac ruptures - releasing its fluids -contractions are relatively mild
First Stage of Labor
Notochord
Blastula
Childbirth
33. A rod of mesodermal cells that develops along the longitudinal axis just under the dorsal layer of ectoderm
Fraternal Twins
Notochord
Organogenesis
Gastrulation
34. Begins when the morula develops a blastocoel
Blastula
Endoderm
Ectoderm
Blastulation