Development of the eye

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Development of the eye

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Bones of the cranium
Anatomy of the cranial base
Introduction to the cranial nerves
Anatomy of the olfactory (CN I) and optic (CN II) nerves
Anatomy of the oculomotor (CN III), trochlear (CN IV) and abducens (CN VI) nerves
Anatomy of the trigeminal nerve (CN V)
Development of the nervous system
Central nervous system histology
Peripheral nervous system histology
Nervous system anatomy and physiology
Neuron action potential
Cerebral circulation
Blood brain barrier
Cerebrospinal fluid
Cranial nerves
Ascending and descending spinal tracts
Motor cortex
Pyramidal and extrapyramidal tracts
Muscle spindles and golgi tendon organs
Spinal cord reflexes
Sensory receptor function
Somatosensory receptors
Somatosensory pathways
Sympathetic nervous system
Adrenergic receptors
Parasympathetic nervous system
Cholinergic receptors
Enteric nervous system
Body temperature regulation (thermoregulation)
Hunger and satiety
Cerebellum
Basal ganglia: Direct and indirect pathway of movement
Memory
Sleep
Consciousness
Learning
Stress
Language
Emotion
Attention
Anatomy of the orbit
Anatomy of the eye
Development of the ear
Development of the eye
Eye and ear histology
Anatomy and physiology of the eye
Photoreception
Optic pathways and visual fields
Anatomy and physiology of the ear
Auditory transduction and pathways
Vestibular transduction
Vestibulo-ocular reflex and nystagmus
Olfactory transduction and pathways
Taste and the tongue
Thyroid hormones
Phosphate, calcium and magnesium homeostasis
Parathyroid hormone
Vitamin D
Calcitonin
Color blindness
Cortical blindness
Hemianopsia
Homonymous hemianopsia
Bitemporal hemianopsia
Cataract
Glaucoma
Retinal detachment
Age-related macular degeneration
Diabetic retinopathy
Corneal ulcer
Retinoblastoma
Retinopathy of prematurity
Periorbital cellulitis
Uveitis
Keratitis
Orbital cellulitis
Hordeolum (stye)
Conjunctivitis
Neonatal conjunctivitis
Conductive hearing loss
Eustachian tube dysfunction
Tympanic membrane perforation
Otitis externa
Otitis media
Vertigo
Meniere disease
Labyrinthitis
Acoustic neuroma (schwannoma)

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Development of the eye

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Key Takeaways

The eyes start to develop at around day 22 of embryonic life. They first appear like outpocketings of the forebrain, called optic vesicles. They, therefore, have a neuroectodermal origin. These vesicles invaginate and develop double-walled optic cups, which later generate various parts of the eye. Cells that form various eye structures have different origins. The retina, optic nerve, and ciliary body have a neuroectodermal origin, whereas the lens comes from the ectoderm, and the choroid and cornea come from the mesenchymal.