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