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What are medullated and non- medullated nerve fibres?
Depending on the number of sheaths ,nerve fibres are of two types :-Myelinated (Medullated) Nerve Fibre.Nonmyelinated (NonMedullated) Nerve Fibre.Myelinated (Medullated) Nerve Fibre.:-are those nerve fibres which are covered by two sheaths ,myelin & neurolemma.Nonmyelinated (NonMedullated) Nerve Fibre.:-these nerve fibres are devoid of myelin sheath .However,neurolemma is present.
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in?
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
Why does a brain hemorrhage within a region of the right internal capsule results in paralysis?
Internal capsule contains all the nerve fibres coming from motor area of brain. So hemorrhage result in paralysis of the oposite side of the body. As there is crossing of nerve fibres to oposite side.
What do you mean by taste buds?
the taste buds is a suppilers with nerves. when wet food passes through these taste buds, the nerve fibres carry the sensations of taste to the brain.
Are there Nerve endings in eyes?
The cornea is one of the most sensitive tissues of the body, it is densely innervated with sensory nerve fibres via the ophthalmic division of the trigeminal nerve by way of 70 - 80 long ciliary nerves; and short ciliary nerves derived from the oculomotor nerve. The nerves enter the cornea via three levels, scleral, episcleral and conjunctival. Most of the bundles give rise by subdivision to a network in the stroma, from which fibres supply the different regions. The three networks are midstromal, subepithelial/Bowman's layer, and epithelium. The receptive fields of each nerve ending are very large, and may overlap. Corneal nerves of the subepithelial layer converge and terminate near the apex of the cornea in a logarithmic spiral pattern.[5]
A bundle of nerve fibers?
The bundle of the nerve fibers is a collection of the threadlike extension of the nerve cell that consists of the myelin sheath and axon in the nervous system. There are nerve fibers in the peripheral nervous system and the central nervous system.
Where does the sodium-potassium pump work?
Along nerve fibres.
What are medullated and non- medullated nerve fibres?
Depending on the number of sheaths ,nerve fibres are of two types :-Myelinated (Medullated) Nerve Fibre.Nonmyelinated (NonMedullated) Nerve Fibre.Myelinated (Medullated) Nerve Fibre.:-are those nerve fibres which are covered by two sheaths ,myelin & neurolemma.Nonmyelinated (NonMedullated) Nerve Fibre.:-these nerve fibres are devoid of myelin sheath .However,neurolemma is present.
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in?
I'm guessing; "myelinated nerve fibres" contrary to the much slower "non-myelinated nerve fibres"
What is medullary?
Medullary (myelin)- sheath is the covering of nerve fibres. It insulates the nerve fibre (axon) and prevents leakage of ions.
What is an axonopathy?
An axonopathy is a disorder or disruption of the functioning of the axons - the nerve fibres which conduct nerve impulses away from the body of the cell to a synapse.
What is axonopathy?
An axonopathy is a disorder or disruption of the functioning of the axons - nerve fibres which conduct nerve impulses away from the body of a cell to a synapse.
Pelvic splanchnic nerve contains?
Parasympathetic fibres arise from S2,S3,S4. Carry preganglionic parasympathetic and visceral afferent fibres from pelvic and genital organs.
What color is the choroid?
choroid is black in colour with a lot many nerve fibres to nourish the organ that is eye.
Why does a brain hemorrhage within a region of the right internal capsule results in paralysis?
Internal capsule contains all the nerve fibres coming from motor area of brain. So hemorrhage result in paralysis of the oposite side of the body. As there is crossing of nerve fibres to oposite side.
How fast can a nerve signal travel?
A nerve impulse is a pulse of electricity, an action potential that passes along the nerve. The speed at which it travels is called its conduction velocity and in human nerve fibres, this velocity ranges between 1 and 3 metres per second in unmyelinated fibres and between 3 and 120 metres per second in myelinated fibres
Which Nerve ending is located in a tendon and protects against overcontracting?
The internal tendon bulk is thought to contain no nerve fibres, but the epitenon and paratenon contain nerve endings, while Golgi tendon organs are present at the junction between tendon and muscle.
