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46 Cards in this Set
- Front
- Back
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1. Induction is a process whereby a group of cells is influenced to change their fate.
A. true B. false |
A. true
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2. Which of the following acts over a shorter distance?
A. juxtacrine signaling B. paracrine signaling |
A. juxtacrine signaling
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3. Which of the following makes use of diffusible factors?
A. juxtacrine signaling B. paracrine signaling C. both D. neither |
B. paracrine signaling
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4. Induction can involve interactions between epithelial cells and:
A. mesenchymal cells B. epithelial cells C. both |
C. both
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MATCH THE FOLLOWING WITH ITS CORRECT ORIGIN. ONE ANSWER PER QUESTION. ANSWERS MAY BE USED MORE THAN ONCE.
5. corium 6. sweat glands 7. periderm 8. dermis of the face A. ectoderm B. mesoderm C. both |
5. corium
C both 6. sweat glands A ectoderm 7. periderm A ectoderm 8. dermis of the face C both |
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9. The periderm serves mainly as a protective barrier between the fetus and amniotic fluid.
A. true B. false |
B. false
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10. Which of the following develops from mesoderm?
A. sebaceous glands B. arrector pili muscles C. both D. neither |
B. arrector pili muscles
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11. Which of the following appears earlier in development?
A. vernix caseosa B. periderm C. they appear at the same time |
B. periderm
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12. Melanocytes are part of the dermis.
A. true B. false |
B. false
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13. Albinism is an anomaly associated with:
A. sweat glands B. mammary glands C. sebaceous glands D. none of the above |
D. none of the above
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14. Ichthyosis is a condition characterized by lack of pigment production.
A. true B. false |
B. false
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15. Muscle tissue develops from ____mesoderm.
A. paraxial B. splanchnic C. both D. neither |
C. both
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16. Occipital myotomes develop into:
A. extrinsic muscles of the eye B. muscles of the tongue C. both D. neither |
B. muscles of the tongue
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17. Preotic myotomes give rise to the muscles of facial expression.
A. true B. false |
B. false
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18. Muscles that develop from the hypomere are innervated by the ___ ramus of a spinal nerve.
A. dorsal B. ventral |
B. ventral
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19. Muscles of the limb are derived from the:
A. epimere B. hypomere C. both D. neither |
B. hypomere
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20. The rectus abdominis muscle is derived from the:
A. epimere B. hypomere C. both D. neither |
B. hypomere
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21. The muscular part of the diaphragm is derived from occipital myotomes.
A. true B. false |
B. false
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22. Cardiac muscle is derived from _____ mesoderm.
A. somatic B. splanchnic C. both D. neither |
B. splanchnic
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23. Torticollis refers to damage to the:
A. diaphragm B. pectoralis major C. serratus anterior D. sternocleidomastoid |
D. sternocleidomastoid
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24. Which of the following is derived from the epimere?
A. longisimus capitus B. sternohyoid C. both D. neither |
A. longisimus capitus
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25. Which of the following bones ossify by intramembranous ossification?
A. frontal B. maxilla C. both D. neither |
C. both
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26. Which of the following form by endochondral ossification?
A. clavicle B. humerus C. both D. neither |
B. humerus
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27. Bones develop from the ______ division of the somite.
A. dermatome B. sclerotome C. both D. neither |
B. sclerotome
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28. The occipital bone forms by _____ ossification.
A. intramembranous B. endochondral C. both D. neither |
C. both
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29. Each vertebra forms from ______ somite(s).
A. one B. two C. three D. four |
D. four
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30. Bones of the neurocranium form by both intramembranous and endochondral ossification.
A. true B. false |
A. true
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31. The bones of the viscerocranium are derived from:
A. neural crest cells B cells of the paraxial mesoderm C. both D. neither |
A. neural crest cells
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32. The superior/inferior axis of the developing limb is determined by the:
A. AER B. ZPA C. both D. neither |
B. ZPA
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33. Ribs develop from condensation in the somatic layer of the mesoderm.
A. true B. false |
B. false
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34. In order for all of the structures of the limb to form in the correct location, how many axes must be established?
A. one B. two C. three D. four |
C. three
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35. Klippel-Feil syndrome is an anomaly in which the limbs are malformed.
A. true B. false |
B. false
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36. Which of the following often accompanies club foot?
A. polydactyly B. syndactyly C. meromelia D. none of the above |
B. syndactyly
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37. Premature closure of the sutures of the skull results in a condition known as craniosynostosis.
A. true B. false |
A. true
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38. Which of the following are derived from the neuroepithelium?
A. neurons of the dorsal root ganglion B. neurons of the ventral horn of the spinal cord C. both D. neither |
C. both
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39. The mantle layer of the spinal cord forms _____ the marginal layer.
A. earlier than B. later than C. at the same time as |
A. earlier than
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40. Sensory function in the spinal cord is associated with development of the ____ plates.
A. basal B. alar C. both |
B. alar
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41. Sensory neurons that form the dorsal root of spinal nerves are derived from neural crest.
A. true B. false |
A. true
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42. The cauda equina is composed of spinal roots of lumbar and sacral spinal nerves.
A. true B. false |
A. true
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43. Which of the following develops in the metencephalon?
A. cervical flexure B. cranial flexure C. pontine flexure |
C. pontine flexure
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44. Spina bifida cystica is normally accompanied by localized hypertrichosis.
A. true B. false |
B. false
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45. The diencephalon is derived from the:
A. rhombencephalon B. mesencephalon C. prosencephalon D. none of the above |
C. prosencephalon
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46. There are distinct basal and alar plates in the:
A. myelencephalon B. metencephalon C. both D. neither |
C. both
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47. The cerebellum develops from the:
A. metencephalon B. myelencephalon C. mesencephalon D. diencephalon |
A. metencephalon
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48. The diencephalon gives rise to a portion of the pituitary gland.
A. true B. false |
A. true
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49. Which of the following is derived from the metencephalon?
A. medulla oblongata B. thalamus C. superior colliculi D. pons |
D. pons
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