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