What are the derivatives of Octoderm?
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Derivatives of ectoderm
(1) Epidermis of skin, hair, arrector pili muscles, nails, sudoriferous (sweat) and sebaceous (oil) glands and chromatophores (pigment cells) of skin.
(2) Enamel of teeth, salivary glands, mucous membrane of lips, cheeks, gums, part of the floor of the mouth and part of palate, nasal cavities and paranasal sinuses. Lower part of anal canal.
(3) Terminal part of male urethra.
(4) Nervous system including all neurons, neuroglia (except microglia), and Schwann cells. Piamater and arachnoid mater.
(5) External ear, outer layer of tympanic membrane, membranous labyrinth (internal ear).
(6) Mammary glands, outer surface of labia minora and whole of labia majora.
(7) Pituitary gland, pineal gland and medulla of adrenal glands.
(8) Conjunctiva, cornea, lens of eye, muscles of iris, vitreous humour, retina, lacrimal gland.
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