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Organogenetic Period: SA Question 1 Which phase of development involves the maturation of physiologic processes? A. Induction B. Differentiation C. Growth D. Morphogenesis 1 Organogenetic Period: SA Question 1 Answer Which phase of development involves the maturation of physiologic processes? A. Induction B. Differentiation CORRECT ANSWER C. Growth D. Morphogenesis 2 Embryonic Development: Three Phases Phase 1 – Growth: cell division and the elaboration of cell products. Phase 2 – Morphogenesis: development of shape, size or features of a particular organ or part of the whole of the body. Phase 3 – Differentiation: maturation of physiological processes. 3 Organogenetic Period: SA Question 2 Which phase of development that involves cell division? A. Induction B. Differentiation C. Growth D. Morphogenesis 4 Organogenetic Period: SA Question 2 Which phase of development that involves cell division? A. Induction B. Differentiation C. Growth CORRECT ANSWER D. Morphogenesis 5 Organogenetic Period: SA Question 3 Structure A and Structure B interact during the course of development. This culminates in Structure A promoting the development of Structure B. This process is termed: A. Transformation B. Induction C. Differentiation D. Morphogenesis 6 Organogenetic Period: SA Question 3 Answer Structure A and Structure B interact during the course of development. This culminates in Structure A promoting the development of Structure B. This process is termed: A. Transformation B. Induction CORRECT ANSWER C. Differentiation D. Morphogenesis 7 Three possible methods of transmission of signal substances in inductive cell interactions. 8 Organogenetic Period: SA Question 4 Neural crest cells give rise to: A. Muscles of the pharyngeal arch origin B. The adrenal cortex C. The meninges D. Both A and C E. All of the above 9 Organogenetic Period: SA Question 4 Answer Neural crest cells give rise to: A. Muscles of the pharyngeal arch origin B. The adrenal cortex C. The meninges D. Both A and C CORRECT ANSWER E. All of the above 10 11 Organogenetic Period: SA Question 5 Neural crest cells are derived from: A. Paraxial endoderm B. Lateral mesoderm C. Endoderm D. Ectoderm 12 Organogenetic Period: SA Question 5 Answer Neural crest cells are derived from: A. Paraxial endoderm B. Lateral mesoderm C. Endoderm D. Ectoderm CORRECT ANSWER 13 14 Organogenetic Period: SA Question 6 What is the Carnegie Stage of development for an embryo that demonstrates the following characteristics: it is curved in a C-shape; otic vesicles are present; upper limb buds are flipper- like; attenuated tail is present; and there are three branchial arches? A. 11 B. 12 C. 13 D. 14 15 Organogenetic Period: SA Question 6 Answer What is the Carnegie Stage of development for an embryo that demonstrates the following characteristics: it is curved in a C-shape; otic vesicles are present; upper limb buds are flipperlike; attenuated tail is present; and there are three branchial arches? A. 11 B. 12 C. 13 CORRECT ANSWER D. 14 16 17 Organogenetic Period: SA Question 7 Which of the following is the last Carnegie Stage of embryonic development? A. 22 B. 23 C. 24 D. 25 18 Organogenetic Period: SA Question 7 Which of the following is the last Carnegie Stage of embryonic development? A. 22 B. 23 CORRECT ANSWER C. 24 D. 25 19 Carnegie Stages 20 Organogenetic Period: SA Question 8 Embryos show reflex response to touch by this week. A. Three B. Four C. Five D. Sixth 21 Organogenetic Period: SA Question 8 Answer Embryos show reflex response to touch by this week. A. Three B. Four C. Five D. Sixth CORRECT ANSWER 22 Questions 23