olfactory
optic
oculomotor
trochlear
trigeminal
abducens
facial
auditory
glossopharyngeal
vagus
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.
Hard drive
Peripherals are all the external bits attached to your computer, such as mouse, printer, fax, modem and so on.
The frontal and temporal lobe.
The frontal lobe and temporal lobe
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.
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.
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.
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.
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).
The parasympathetic nervous system allows the act of micturition. The sympathetic nervous system inhibits it.
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.
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
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.
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.
Would lead to loss of both sensory & motor function. Ventral ramus is the anterior division of a spinal nerve.