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Questions and Answers
What is the Optic Nerve also known as?
What is the Optic Nerve also known as?
- Cranial Connecticus
- Ocular Synapse
- Neural Optimalis
- Nervus Opticus (correct)
Where does the Intraorbital part of the Optic Nerve run from?
Where does the Intraorbital part of the Optic Nerve run from?
- Posterior part of the eyeball to the optic canal (correct)
- Anterior part of the eyeball to the optic canal
- Optic disc to the sphenoid bone
- Optic chiasm to the diaphragma sellae
What causes an electrical impulse in neurons?
What causes an electrical impulse in neurons?
- Carbohydrates
- Lipids
- Chemicals (ions) (correct)
- Proteins
What is the main characteristic of the protoplasm of a neuron?
What is the main characteristic of the protoplasm of a neuron?
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What is the estimated number of fibers in each Optic Nerve?
What is the estimated number of fibers in each Optic Nerve?
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Study Notes
Optic Nerve
- The Optic Nerve is also known as Cranial Nerve II (CN II)
- The Intraorbital part of the Optic Nerve runs from the eyeball to the optic canal
- The Optic Nerve is responsible for transmitting electrical impulses from the retina to the brain
Neuron Characteristics
- Electrical impulses in neurons are caused by the movement of ions (charged particles) across the cell membrane
- The main characteristic of the protoplasm of a neuron is its ability to transmit electrical impulses
Optic Nerve Structure
- Each Optic Nerve is estimated to contain approximately 1 million fibers
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