Which of the following is NOT formed in the developing epidermis? Mammary glands

Question

Which of the following is NOT formed in the developing epidermis? Mammary glands Hair papilla Sebaceous gland Mammary ridge Cochlea The closes to form the neural tube. Neural crest Notochord Neural plate Blastopore Epidermal ectoderm The gives rise to the myotome. Mesoderm Dermatome Dermamyotome Selerotome Lateral plates The degenerates (breaks down) in females. It gives rise to parts of male reproductive system. Wolffian duct Ureteric bud Mullerian duct Nephric ducts Pronephros At the phylotypic stage, embryos are very similar. True False The in birds is the functional equivalent to the dorsal lip of the blastopore. It acts as a neural inducer. Blastopore Hypoblast Hensen's node Epiblast Primitive groove Which of the following docs NOT arise from the foregut? Esophagus Duodenum Stomach Rectum B and D The ureteric bud gives rise to the ureter, renal pelvis, calyces and collecting tubules of the kidney. True False The gives rise to the kidneys and some of the reproductive structures. Paraxial mesoderm Axial mesoderm Intermediate mesoderm Somatic layer Visceral layer Which of the following matches is incorrect? Dorsal lip of the blastopore-Planar signal Chordamesoderm-Vertical signal Epidermal Ectoderm-Planar signal Neural Ectoderm-Vertical signal C and D The is called the organizer. In the amphibian embryo it can induce the formation of the embryonic axis. Ectoderm Blastopore Henson's node Dorsal lip of blastopore Notochord. During neurulation the embryo is called a Zygote Blastual Morula Gastrula Neurula

Explanation / Answer

27. answer: E: cochlea. Epidermal derivatives are sebaceous glands, mammary glands, sweat glands, hair follicles, nails and hair

28. answer : A: neural crest migrate to form neural tube. Actually the neuropore close to form the neural tube

29. answer: D: heart is developed from endocardial tubes

30. answer D: somite develops into sclerotome which gives rise to myotome

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