1. The pharyngeal pouches give rise to all ofthe following ExCEPT the A. Eustach

Question

1. The pharyngeal pouches give rise to all ofthe following ExCEPT the A. Eustachian tube B. Parathyroi D. Thyroid E. Middle ear C. Tonsils 2. Which of the following constitutes the hind brain? A. Mesencephalon and Rhombencephalon B. Diencephalon and Metencephalon C. Telencephalon and Diencephalon D. Metenceph and Rhombencephalon alon E. etencephalon and Myelencephalon 3. The lining of the digestive tract and the lungs is derived from D. A and B E. A and C B. Endoderm C. Mesoderm A. Ectoderm 4. Which of the following grows together forming the embryonic heart tube? A. Endothelium B. Ventricles C. Cardiac jelly D. Myocardium E. Endocardial tubes 5. Which of the following gives rise to cardiovascularsystem, smooth muscle and connective tissues surrounding blood vessels, intestines, and other internal organs? A. Axial mesoderm B. Paraxial mesoderm C. Intermediate mesoderm D. Visceral layer E. Somatic layer becomes the labyrinth, and gives rise to the Statoacoustic ganglion. 6, The D. Sclerotome E. Nasal placode A. Lens placode B. optic vesicle C. otic placode A. Mesencephalon and Rhombenoephalon 7. The Prosencephalon is subdivided into C. Telencephalon and Diencephalon B. Diencephalon and Metencephalon E. Metencephalon and Myelencephalon D. etencephalon and Rhombencephalon surrounds third ventricle and has two outgrowths called the optic vesicles. C. Telencephalon B. on A. Mesencephalon E. Myelencephalon D. Metencephalon 9. Neural induction requires all of the following ExCEPT A. Planar signals B. Vertical signals E. Epidermal ectoderm C. Mesoderm induction D. Cytoplasmic rearrangements becomes the medulla oblongata. 10. The Diencephalon A. Mesencephalon B. C. Telencephalon E. Myelencephalon D. halon

Explanation / Answer

Answer A: Eustachian tubeThe pharyngeal pouch gives rise to middle ear, tonsil, thymus, parathyroids, part of thyroid and pharyngo tympanic tube Answer : D: metencephalon and rhombencephalon. Hind brain consists of cerebellum, pons and medulla Answer B: endoderm. The gut and the lungs lining arises from endoderm. However the nose passage is from ectoderm. Answer E. Endocardial tubes. This happens in the third week of development

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