What is the speed at which a neural impulse travels is increased when the axon is encased?
What is the speed at which a neural impulse travels is increased when the axon is encased?
midterm review for biopsychology
| Question | Answer |
|---|---|
| The speed at which a neural impulse travels is increased when the axon is encased by a(n) | myelin sheath |
| A biological psychologist would be most interested in the relationship between | body chemistry and violent behavior |
| Neural impulses may travel as rapidly as | 200 miles per hour |
What increases the speed at which a neural impulse travels?
Speed increases when an axon is encased by a myelin sheath.
What coats the axon and speeds up the impulse?
The myelin sheath coats the axon of a neuron and speeds up the transmission of messages. Myelin is a fatty coating that is unable to perpetuate the action potential signal. As a result, the signal jumps over the myelinated areas, bypassing much of the axon and speeding up transmission.
When an action potential reaches the end of an axon an electrical impulse is then converted into a?
1) An action potential reaches the end of an axon, the synaptic knob. 2) Depolarization of the presynaptic membrane opens voltage-gated calcium channel.
Which part of your brain is essential for receiving information that you are moving your legs?
back? 39. Which part of your brain receives information that you are moving your legs? A) amygdala.
What is the brief electrical charge that travels down an axon called?
Action potential
Action potential: is a brief electrical charge that travels down the axon of the neuron.
How fast does an impulse travel?
Nerve impulses are extremely slow compared to the speed of electricity, where the electric field can propagate with a speed on the order of 50–99% of the speed of light; however, it is very fast compared to the speed of blood flow, with some myelinated neurons conducting at speeds up to 120 m/s (432 km/h or 275 mph).
How fast is a nerve impulse?
In the human context, the signals carried by the large-diameter, myelinated neurons that link the spinal cord to the muscles can travel at speeds ranging from 70-120 meters per second (m/s) (156-270 miles per hour[mph]), while signals traveling along the same paths carried by the small-diameter, unmyelinated fibers of …
What are the spaces between Schwann cells called?
The gaps between adjacent Schwann cells are called nodes of Ranvier.
When does the speed of a neural impulse increase?
The speed at which a neural impulse travels is increased when the axon is encased by a(n) myelin sheath The neural center in the limbic system that processes explicit memories for storage is called the hippocampus. The correct order of the structures of the motor neuron in terms of how they communicate is:
Which is part of the brain processes explicit memories?
Most neurons have all of the following parts EXCEPT: glia The speed at which a neural impulse travels is increased when the axon is encased by a(n) myelin sheath The neural center in the limbic system that processes explicit memories for storage is called the hippocampus.
Which is the correct order of motor neuron structures?
The neural center in the limbic system that processes explicit memories for storage is called the hippocampus. The correct order of the structures of the motor neuron in terms of how they communicate is: dendrites, the cell body, axon, terminal branches.