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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.

500 Questions

Name of cranial nerves in frog?

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Asked by Wiki User

olfactory

optic

oculomotor

trochlear

trigeminal

abducens

facial

auditory

glossopharyngeal

vagus

What are the ganglia in a cockroach?

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Asked by Wiki User

There are 12 major groups of CNS ganglia (ganglions) in a cockroach:

- 3 in the head:

supra-oesophageal (cerebral) ganglia

sub-oesophageal ganglia

circum-oesophageal connectives

- 3 in the thorax:

prothoracic ganglia

mesothoracic ganglia

metathoracic ganglia

- 6 in the abdomen:

first through fifth abdominal ganglia (fused from pairs)

sixth abdominal ganglia (fused from a group)

The cockroach central nervous system has a double ventral nerve cord in the thorax and abdomen.

What is the Refers to those parts of a computer which you can touch or feel?

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Asked by Wiki User

Hard drive

Peripherals are all the external bits attached to your computer, such as mouse, printer, fax, modem and so on.

What the functions the nervous system?

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Asked by Wiki User

ewan ko sa inyo!

How many cranial nerves does a rat have?

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Asked by Wiki User

Rats have twelve pairs of cranial nerves.

What part of the brain controls learning?

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Asked by Wiki User

The frontal and temporal lobe.
The frontal lobe and temporal lobe

What is somatic nervous system?

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The somatic nervous system transmits sensory messages to the central nervous system. The somatic nervous system is a sub group of the peripheral nervous system, it mainly controls voluntary muscles and sense organs.

Do all animals have complex nervous systems?

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Asked by Wiki User

Not all animals have complex nervous systems. In fact, most lower animals don't even show an organized nervous system. Its only in higher animals like chordates that a proper organized nervous system is seen.

What is dysfunction of the nervous system?

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Asked by Wiki User

The nerve damage interferes with the messages sent between the brain and other organs and areas of the autonomic nervous system, such as the heart, blood vessels and sweat glands.

What system is the nervous system related to?

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Asked by Wiki User

The nervous system controls the rate of the heart. In turn the cardiovascular system brings oxygen & nutrients to the brain & the removes all the waste.

Where are cell bodies of the somatic motor neurons of the spinal nerves located?

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Asked by Wiki User

It depends on whether it is afferent or efferent. The afferent neurons have their soma, or cell body, near the sensory receptor sites in the body tissues. The efferent spinal nerve cells have their soma near the spinal cord cord in a ganglion.

The gray matter in the spinal chord is mostly made up of the cell bodies of one of the three types of neurons, afferent, or sensory neurons, interneurons, which are also called association neurons, and efferent, or motor, neurons. The interneurons have their cell bodies roughly in the middle, with the dendrites projecting out to one side (usually heavily branched) and the axon projecting out to the other but each only a short distance. In motor neurones (efferent neurone) the cell body is very much at one end, with the dendrites branched directly from and the axon projecting a long way to reach the target. These neurons also have their cell bodies in the spinal column (usually) but there just are not as many of these as there are interneurons. The sensory neurones (afferent neurones) are quite like the interneurons in structure as they have their cell bodies in the middle but the distance the dendrites and the axons projects are much greater. The allows the cell bodies from many sensory neurons to be grouped together, a fair distance from the sensing tissue, what is also referred to as as affector organ, in a structure called a ganglia (the name for a collection of cell bodies in the periphery).

What organs work in the nervous system?

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Asked by Wiki User

the spinal cord works with the brain, and others

Do your ears produce more wax when you are nervous?

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Asked by Asus16

when your with dakotay 2h4fc\[ uhb=

What does the parasympathetic nervous system stimulate in the micturition reflex?

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Asked by Wiki User

The parasympathetic nervous system allows the act of micturition. The sympathetic nervous system inhibits it.

What makes a skin cell different from a nerve cell?

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Asked by Wiki User

A skin cell is different than a nerve cell because they do different jobs. A skin cell protects the body, regulates body temperature, and helps protect from germs trying to get into the body. The nerve cell sends out a message when your brain want to move a part of the body.



Hope this helps.

How is an impulse transmitted between neurons?

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Asked by Wiki User

The point at which two neurones meet is called the synapse. At this point there are 2 situations:

1: there is no gap, the neurones are physically connected by gap-junctions. This is a rarer situation but does occur. In this case the nerve impulse continues down the second neurone (known as the post-synaptic nerve)

2: there is a small gap (a few micrometers) between the cells. In this case the first nerve, carrying the impulse, (pre-synaptic) causes a release of a chemical known as a neurotransmitter. There are various types of neurotransmitters and each are involved in different situations. When the neurotransmitter reaches the 2nd nerve it binds to the membrane (in most situations) which either causes the cell to depolarize and continue the impulse, or causes hypo-polarization which prevents any other nerve stimulating it.

Short and Simple Answer:

Nerve impulse is transmitted by:

- nerve impulse triggers transmitter substance

- which diffuses across synapse

- the transmitter substance binds with receptor molecule in membrane of next molecule

How do you find your iliopsoas muscle?

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Asked by Wiki User

Well it's sort of below the hip and belly bottom.

It originates from the lumber area of the back and extends to the pelvic iliac rim, the pass around the hip through the sciatic notch to the hip.

Which systems act on the same organs but in opposite ways?

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Asked by Layla52214

The Autonomic Nervous System (ANS) regulates the action of smooth muscles, cardiac muscle, and some glands.
In other words, the ANS regulates involuntary (automatic; unconscious) actions.


There are two major divisions of the ANS. The parasympathetic division functions under normal conditions (to maintain homeostasis), and the sympathetic division of the ANS functions under stress.
Some times the sympathetic divison is called the "Fight or Flight" response and the parasympathetic division is called the "Rest and Repose {turkey dinner syndrome)" response.





What would be the result of damage to ventral root of a spinal nerve?

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Asked by Wiki User

Would lead to loss of both sensory & motor function. Ventral ramus is the anterior division of a spinal nerve.