Nerves

The nervous system hasn't a defined location, it is distributed in the entire body. Every tiny point of your skin has a nerve that sends a signal to your brain telling that you are feeling pain, heat.. The internal organs of your body also have nerves.

The nervous system is constituted of two main parts : The central nervous system and the peripheral nervous system. The central nervous system contains the brain and spinal cord. The peripheral nervous system consists of nerves, (nerves are long fibers that connect the central nervous system to every other part of the body), the motor neurons, the autonomic nervous system,(comprising the sympathetic nervous system and the parasympathetic nervous system, and the enteric nervous system) which mediates voluntary movements.

For CH 12 of A&P the correct answer is: Sensory Neurons.

Muscle fibers

Neurons are the active cells of the nervous system. They are used for all cognitive, sense, and manipulatory activities, not just emotions.

Although it mights sound counterintuitive, the best way to get rid of a pins and needles sensation in your hands or feet is to move them around. The sensation is caused by a decrease in bloodflow and movement will restore bloodflow to that area.

The parts of the CNS that give rise to sympathetic nerves are the thoracic and lumbar regions of the spinal cord.

synaptic cleft

ACh is not degraded, therefore, prolonged depolorization is enforced on the post synaptic memebrane

The radial nerve supplies the muscles of the arm and forearm and and is also the sensory nerve for the upper limb. It therefore helps in the movement of the upper limb and is also partly responsible for sensory feeling in part of the arm, forearm and hand.

Motor Neurons

ventral posterolateral nucleus of the thalamus
thalamus
in the thalamus

Spinal tracts are communication pathways. There are numerous tracts and they carry messages from the body to the brain and from the brain to the body.

Effectors.

the pins and needles thing is that your hand has fallen asleep.the neck im not sure maybe it needs to be stretched. well this is good info my name is Tia.your welcome!:)

3; the superior, middle and inferior

the longest dendrite is I don't know this /;[

Neur- is the word root for neuritis, meaning inflammation of a nerve.

you have a heart attack

eutrophication.

Types of Neurons

While there are many different kinds of neurons, there are three broad categories based on function:

1. Sensory neurons are sensitive to various non-neural stimuli. There are sensory neurons in the skin, muscles, joints, and organs that indicate pressure, temperature, and pain. There are more specialized neurons in the nose and tongue that are sensitive to the molecular shapes we perceive as tastes and smells. Neurons in the inner ear are sensitive to vibration, and provide us with information about sound. And the rods and cones of the retina are sensitive to light, and allow us to see.

2. Motor neurons are able to stimulate muscle cells throughout the body, including the muscles of the heart, diaphragm, intestines, bladder, and glands.

3. Interneurons are the neurons that provide connections between sensory and motor neurons, as well as between themselves. The neurons of the central nervous system, including the brain, are all interneurons.

Most neurons are collected into "packages" of one sort or another, sometimes visible to the naked eye. A clump of neuron cell bodies, for example, is called a ganglion (plural: ganglia) or a nucleus (plural: nuclei). A fiber made up of many axons is called a nerve. In the brain and spinal cord, areas that are mostly axons are called white matter, and it is possible to differentiate pathways or tracts of these axons. Areas that include large number of cell bodies are called gray matter.

The distance across a nerve synapse is 20 nanometres or 2x10-8 metres

oxytocin

True

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Mr. Salehi can answer the question... btw its a squid... =D