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DEVELPMENT>>>OCCULAR ANATOMY

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DEVELPMENT>>>OCCULAR ANATOMY

Post by nomoredoc on Thu Nov 22, 2007 10:04 pm

Question WHICH ONE DEVELOPS FROM NEURAL CREST???

1)orbital bones
2)retina
3)lacrimal gland
4)iris

confused [doubt probably between (2) & (4)]???? Evil or Very Mad


Last edited by on Wed Nov 28, 2007 9:55 am; edited 1 time in total

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Re: DEVELPMENT>>>OCCULAR ANATOMY

Post by dpkmenon on Fri Nov 23, 2007 6:59 pm

wud hav to say its orbital bones..besides, the rest r frm surface and neurectoderms.

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Re: DEVELPMENT>>>OCCULAR ANATOMY

Post by sonia on Sat Nov 24, 2007 8:19 am

yes answer is definitely orbital bones,iris we knw is both ectodermal and mesodermal,retina is neuroectoderm and lacrimal gland is surface ectoderm.OTHER STRUCTURES WICH BELONG TO NEURAL CREST Rrough pne.umonic is EPiCArDiuM and OS.,for endocardiac cushions 2.p for pharyngeal arch and cartilage,pigment cells,pigment cells,C FOR chromaffin cells,carotid body,calcitonin,corneal endothelium and stroma.A FOR AORTOPULMONARY WINDOW,D for dermis.M for melanocytes,multipolar and meningeswich include only pia and arachnoid.O for orbital bones and odontoblasts.S FOR schwann cells,sensory ganglion

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Re: DEVELPMENT>>>OCCULAR ANATOMY

Post by behappy on Fri Nov 30, 2007 5:20 pm

Derivative Cell type or structure derived from Neural crest


--------------------------------------------------------------------------------


Peripheral nervous system (PNS)

Neurons, including sensory ganglia, sympathetic and parasympathetic ganglia, and plexuses Neuroglial cells
Schwann cells
Neuroglial cells
Schwann cells


Endocrine and paraendocrine derivatives

Adrenal medulla
Calcitonin-secreting cells
Carotid body type I cells

Pigment cells
Epidermal pigment cells

Facial cartilage and bone
Facial and anterior ventral skull cartilage and bones

Connective tissue
Corneal endothelium and stroma
Tooth papillae
Dermis, smooth muscle, and adipose tissue of skin of head and neck
Connective tissue of salivary, lacrimal, thymus, thyroid, and pituitary glands
Connective tissue and smooth muscle in arteries of aortic arch origin

or u can remember this way


Derivatives of Neural Crest Cells
Spinal ganglia (prevertebral/paravertebral)
Ganglia of the autonomic nervous system (ANS)
Ganglia of cranial nerves V, VII, IX, X
Sheaths of peripheral nerves
Meningeal coverings of brain and spinal cord
Pigment cells (melanocytes)
Adrenal medulla
Odontoblasts of tooth
Other components of head


Langman's Embryology 8th Edition Pagenumber 95 mentions about Neural crest derivaties
Connective tissue and bones of the face and skull
Cranial nerve ganglia
C cells of the thyroid gland
Conotruncal septum inthe heart
Odontoblasts
Dermis in face and neck
Spinal(dorsalroot)ganglia
Sympatheticchain and preaortic ganglia
Parasympathetic ganglia of the gastrointestinal tract
Adrenalmedulla
Schwanncells
Glialcells
Arachnoid and piamater(leptomeninges)
Melanocytes

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Re: DEVELPMENT>>>OCCULAR ANATOMY

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