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What are schwann cell nucleus'?
myelin sheath peace.love.faith
What is the sheath of a schwann cell that contains cytoplasm and a nucleus and encloses myelin?
Neurilemma
Funtion of the nucleus of a schwann cell?
When the peripheral nervous system develops, Schwann cells line up along unmyelinated axons at regular intervals that eventually become the nodes of Ranvier (important for saltatory nerve condution). The ensheathing process takes place as Schwann cells wrap around the axon many times over, creating concentric layers whose cytoplasm progressively condenses. Contact with the axons also activates myelin genes leading to the expression of myelin glycoproteins and lipids across the Schwann cell plasma membrane. The sheath therefore consists of plasma membrane, cytosol, lipids, glycoproteins, and the Schwann cell nucleus.*So basically, the schwann cells is a protective membrane that covers the axon. It also produces myelin sheath (the coating of a neuron), which increases the speed of the nerve impulse.
What is the definition of eukaryote in a small definition?
A cell with a distinct membrane-bound nucleus.
Is the schwann cell a plant cell?
No--a schwann cell is a type of glial cell, a cell that functions to help and support neurons in a nervous system.
The sheath of Schwann is also called what?
Its the Neurilemma.
What is the definition of a nucleus in cells?
It is where the DNA is stored in a eukaryotic cell.
What is definition of nuclear envelope?
A membrane that surrounds the nucleus of a cell.
Does animal cells and plant cells have nucleus?
yes, both of them have a nucleus (definition: controls the cell)
What did virchowschleidan and schwann each contribute to the cell theory?
The name of the theory that Schleiden and Schwann developed is the cell theory.
Describe how schwann cells form the myelin sheath and the neurolemma encasing the nerve processes?
The Schwann cells wrap themselves tightly around the axon like a jellyroll. During the wrapping process, the cytoplasm is squeezed from between adjacent layers of the Schwann cell membranes, so that when the process is completed a tight core of plasma membrane material encompasses the axon. This wrapping is the myelin sheath. The Schwann cell nucleus and the bulk of its cytoplasm end up just beneath the outermost portion of its plasma membrane. This peripheral part of the Schwann cell and its exposed plasma membrane is the neurilemma.
What is a definition for the word cytoplasm?
Cytoplasm definition: The material or protoplasm within a living cell, excluding the nucleus.
