Nerves

Skeletal muscle:

(occurs at neuro muscular junction)

At the end of the skeletal muscle fibre, there is a single motor neuron that forms many finer branches. At the end of these branches is a synaptic terminal which contain mitochondria and vesicles which in turn contain ACh.

So, when an action potential is propagated down towards the synaptic terminal, ACh is triggered to be released by exocytosis into the synaptic cleft and then onto the motor end plate (which is the other surface upon which the action potential will propagate; this is highly folded for increased surface area).

ACh then binds to receptors on the motor end plate, changing its permeability to Na+ ions. Na+ ions (due to an increased electrochemical gradient) rush into the sarcolemma. This influx increases until AChE breaks down the ACh. This influx results in the generation of an action potential!

The nerves that controls your facial movements exits the skull from behind, below, and deep to your ears and come toward the middle from both sides to converge upon the nose. BEFORE the nerve leaves the skull, a branch of the nerve crosses below the brain across the skull base to enter the nasal cavity. This branch, however, has nothing to do with facial motion rather it helps control the mucous glands in the nasal cavity and palate. Most problems with facial paralysis result from 1) stroke 2) ear pathology (infections, tumors, etc) and 3) parotid gland (in front of the ears) pathology which damage the origin of the nerve in the brain or the nerve itself.

Scientists.

It could be poor circulation, or even early signs of carpal tunnel syndrome.

The Synapse is the area between an axon and a dendrite

The most immediate effect would be an increase in heart rate. In addition, regulation of heart rate, contractile state, and conduction of electrical impulses through the heart would be impaired.

The reason for the observed effects are that the vagus nerve carries important information to the heart from a part of the central nervous system called the parasympathetic nervous system. The parasympathetic nervous system is often considered the "rest and digest" system. It decreases heart rate, decreases how strongly the heart contracts with each beat, and decreases the rate at which electrical impulses are conducted through the heart. This is in contrast to the effects of the sympathetic nervous system on the heart; the sympathetic nervous system raises heart rate, force of contraction, and rate of electrical conduction in the heart.

A normal heart does not require information from the parasympathetic and sympathetic nervous systems in order to beat. The heart has an intrinsic pacemaker that allows it to generate heart beats on its own. The heart's pacemaker generates a pace at a rate of about 100 cycles per second, which means that if the heart was to take matters into its own hands (ie, have no innervation), then it would beat at about 100 beats per minute (bpm).

If that's the case, then why do normal adult hearts beat around 70 beats per minute and not 100?

As was hinted at above, normal hearts are innervated by the parasympathetic and sympathetic nervous systems. And both act on the heart at the same time. While you might think that the systems would cancel each other out, it turns out that the heart receives more sympathetic stimulation than parasympathetic stimulation at rest. The result is that the heart is effectively told to reduce the heart rate from the normal 100 bpm to something closer to 70 bpm.

Thus if you take a normal heart at rest that's innervated by both sympathetic and parasympathetic systems, and then sever the vagus nerve, you lose the parasympathetic input to the heart, while leaving the sympathetic input intact. The result is that the resting heart rate increases, to something closer to 100 bpm. ________________________________________________________________________ Cutting the vagus nerve would increase the heart rate. At REST there is more Parasympathetic input to the heart because it slows the heart rate. However during activity there is more sympathetic imput than parasympathetic imput. If all nerves were cut from the heart it would continue to beat in a Ryhmic way because of the electrical system, as demonstrated in heart transplants.

optic nerve

You would find the axon in the nervous system loves.

The nervous system is the control system and the network of communication for the body. The nervous system is made up of nerves, the spinal cord and the brain. The nerves control everything we do; they carry messages that tell us to move, to breathe, to feel and to think. Nerves run to the muscles, organs, heart, lungs, blood vessels, brain--even to our teeth and skin. There are two sets of nerves: the central nervous system and the peripheral (outside) nervous system.

the answer i found was the foot. sorry if i am wrong.
Another place to consider is the fold of the arm. If you have someone touch your arm while you are looking and then have them without you looking touch several places on your are it is difficult to know when they return to the exact place they originally touched. You do have nerves in your arms but the endings are few.

The biggest and most important hing to remember is that plant and animal cells look very different from one anther. The major thing to look for when distinguishing the looks of cells is to look for a cell wall and a central vacuole.

Yes. If you were to study the art of Ryukyu-Kempo, you would discover that the body is full of pressure points that can be exploited to immobilize, knock-out and even kill a person. There are two points that correspond to the position of the fingers in the nerve pinch. For more information on Ryukyu-kempo, follow this link http://en.wikipedia.org/wiki/Ryukyu_Kempo

nervence

A synapse is the connection between two neurons. It consists of the synaptic cleft (the physical gap between one neuron's axon and the other's dendrite). Neurotransmitters cross the gap from the axon to the dendrite and affect whether the next neuron fires.

the impulse is transmitted by either neurons or sensory or effector organs.impulse is nothing but the stimulation for an part of body to carry out specific actions.generally impulses are transmitted very faster by neurons that too mylenated neurons.when an impulse is transmitted across a neuron or organ it gets polarised.due to unknown mechanism the axon terminals present at the end of axon release special type of transmitters called neurotransmitters into the gap present in between 2 neurons or a neuron and organ.these examples of neurotransmitters are GABA,acetylcholase,epinephrine ,nor epinephrine etc.these help in transmitting impulses from one to another.these get diffused into gap from axon terminals and helps in transmission.after the impulse is transmitted these again gets inactivated or taken back into axon terminals.these are inactivated by special enzymes.hence these are very important in nervous system for impulse transmission .

It diffuses across a small gap called a synapse between the two nerve cells. It is passed as a neurotransmitter (in chemical sacs). They reach the end of one cell and the impulse is converted into neurotransmitters, which are released from that cell, diffuse across the gap, and land on the receptor site, where they are converted back into electrical impulses.

All the cells in the human body, including the nerve cells, have 46 chromosomes (23 pairs) (except the sperms and egg cells, which have 23 chromosomes each).

The cell body, called the SOMA, is the main part of the neuron. It is the main metabolic center or region of the neuron.

The neuron has 3 parts: DENDRITES (inputs), SOMA (cell body), and AXON (output). The axon is the part which FIRES when sufficient inputs reach it at the axon hillock.

Nerve cells, or neurons, are unique in that they are specialized to transmit electrical and chemical signals throughout the body. They have long projections called dendrites and axons that allow them to communicate with other neurons and muscle cells. Additionally, neurons have a high metabolic rate and cannot divide, making them more susceptible to damage and disease.

A synapse connects one neuron to another (and a neuron to a muscle cell).

The axon hillock at the 'end' of the neuron cell body (soma) initiates a firing of the axon of a neuron.

An axon terminal at the end of an axon is the first part of a synapse.

If this didn't answer your intended question, please compose it better.

An axon will carry nerve impulses away from the cell body.

Motor neuron cells are located within the central nervous system (CNS), specifically in the spinal cord and brain. They are responsible for transmitting signals from the brain to muscles and glands to control movements and various bodily functions.

If I was paying attention in med school, I think... The pre-ganglionic fibers are myelinated and the post-ganglionic are unmyelinated. This is in reference to the sympathetic and parasympathetic systems.