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Nervous System
This category is for questions about the mechanical and chemical process of reactions to internal and external stimuli, ranging from the brain down to the spinal cord, and all nerves, cells and tissues in between.
3,047 Questions
What is the similarities of voluntary action and involuntary action?
SIMILARITIES of voluntey action and involuntary action
What process does the parasympathetic nervous system not stimulate?
The parasympathetic nervous system does not stimulate the fight or flight response.
Microglia
autonomic nervous system
What is the nervous system in charge of?
The nervous system consists of your brain, spinal cord and the many nerves throughout your body.
The nervous system of the human being is responsible for sending, receiving, and
processingnerve impulses throughout the body.
The drug caffeine stimulates the activity in the central nervous system by?
Interfering with the actions of sodium ions
Why is homeostasis so important in terms of autonomic nervous system?
homeostasis is in place to ensure that the regulation if the body is kept at an equilibrium. This means that that the body is in the state of balance in terms of everything that it contains e.g blood sugar levels. By keeping everything in the body constant, the bosy can function correctly.
Can you have brain surgery awake and not feel a thing?
Yes because you have millions of brain cells but no pain receptors there, so doctors can perform surgery on your brain while you are awake and you not feel a thing!
Is olfactory a sensory or motor nerve?
Olfaction is the sense of smell.
The Olfactory System is the sensory system used for Olfaction (smelling).
So in short, Its a sensory system (nerve) not a motor nerve.
Think of motor nerves as nerves that cause a change in something, such as muscle motor nerves cause the muscle to contract.
Sensory Nerves 'sense' the environment around them and then transfer this information on to other parts of the body such as the brain.
What is an automatic response involving the eye?
Blinking - to protect the eye from something flying towards it.
Pupil growing smaller - to obtain less light in the eye so you are not blinded
Pupil growing larger - to obtain more light so you can see clearer
Which part of the nervous system carries impulses to involuntary muscles and glands?
autonomic
autonomic
Is a barbiturate class of drugs whose major action is to stimulate the central nervous system?
do barbiturates stimulate the central nervous system
What are two ways the nervous system can control the force generated by a muscle?
The two ways that the nervous system can control the force generated by a muscle are by increasing amount and size of contactable muscle units and increasing how often action potentials are sent from the brain to the muscle.
What is the chemical produced between nerve cells?
a neurotransmitter called acetylcholine (ACh) is produced between nerve cells. This neurotransmitter carries the signal (in chemical form) at the synaptic junction.
Does the hypothalamus relay sensory inputs?
No, the thalamus relays sensory inputs, not the hypothalamus.
The somatic and autonomic nervous systems make up the?
The somatic and autonomic nervous systems make up the peripheral nervous system. The main function of this system is to connect the central nervous system to the limbs and organs in the body.
An analogy for Nervous System?
For a real life situation, i would think telegraphs would work well.
1. Telegraphs send and receive data over long distances, (hence the human body.)
2. The messages from the telegraph stations would spread to the townspeople.
My own idea, however.
New version
loop in an endless track
<z><><><> VVGVGFHIHJIUGGGVWXHVVGWHGSGHGHJGHGWSHGHJGHJGHJWGSXHG
What are the two major parts in the nervous system in earthworms?
the neves and the stuff aroud the neves
Cerebellum
Why do psychologist study the brain and nervous system?
It is because our brain affects our behavior, cognition, perception. different moods and various reactions. The brain is the command center of our whole body so its state or nature is very important in understanding behavior and mental processes. Psychology is the study of behavior and mental processes so it makes sense.
What type of nerve cells on the retina that allow to see dim light?
Rod cells are evenly dispersed across the retina and pick up light of all wavelengths as the same stimulus and so do not allow colour vision. The advantage of these cells is that they are sensitive to very dim light light and so are responsible for the limitted degree of night vision in humans.
