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