Which neuron could transmit a nerve impulse the fastest?
|WHICH NEURON COULD TRANSMIT A NERVE IMPULSE THE FASTEST||A LARGE DIAMETER NEURON WITH MYELIN|
|WHICH IS TRUE OF A NEURON WITH A RESTING POTENTIAL||SODIUM PUMP HAS MOVED NA+ TO THE OUTSIDE OF THE PLASMA MEMBRANE|
Which part of the neuron carries the nerve impulse?
In which pathway does a nerve impulse usually move?
Nerve impulses begin in a dendrite, move toward the cell body, and then move down the axon. A nerve impulse travels along the neuron in the form of electrical and chemical signals. The axon tip ends at a synapse. A synapse is the junction between each axon tip and the next structure.
What are the routes that nerve impulses travel called?
The routes nerve impulses travel are called pathways, the simplest of which is a reflex arc. 1. A reflex arc includes a sensory receptor, a sensory neuron, an interneuron in the spinal cord, a motor neuron, and an effector.
What are the two types of impulses?
The two type of impulses are the motor and sensory impulses. The motor impulses are those that are provenient from motor neurons or efferent neurons, coming from the central nervous system, and produce effects controlling effector organs, mainly muscles and glands.
What is the role of a gap junction between cells?
Gap junctions are aggregates of intercellular channels that permit direct cell–cell transfer of ions and small molecules. Initially described as low-resistance ion pathways joining excitable cells (nerve and muscle), gap junctions are found joining virtually all cells in solid tissues.
What is the function of tight junction?
Tight junctions form the continuous intercellular barrier between epithelial cells, which is required to separate tissue spaces and regulate selective movement of solutes across the epithelium.