Axons are long nerve processes which carry nerve impulses from the Soma to other neurons, they vary in length but can become almost as long as half of the human body.
The soma (body) of the neuron contains the nucleus which acts as the cell's control centre, these contain many small neurofibrils which project from the nucleus into the dendrites.
Dendrites are short, thick processes which branch out of the soma in a tree like manor. They conduct nerve impulses to the soma.
The three categories of neurons:
Afferent (Sensory) Neurons have the dendrites connected to receptors such as the eyes, ears etc. These receptors change the information they receive into electrical impulses that are transmitted to other neurons. In sensory neurons the axons are connected to other neurons.
Efferent (Motor) Neurons have the dendrites connected to other neurons, the axons are connected to effectors. Effectors are either glands or a muscle cell that is the receiving end of the nerve impulse. The nerve, when excited will cause the effector to react (move, contract, or secrete etc).
Internuncial Neurons have both the dendrites and the axons are connected to other neurons. They are sometimes referred to as connector neurons.
Internuncial neurons are found throughout the body, but especially in the spinal cord and brain.
Properties and characteristics of Neurons:
Normally the electrical impulses (messages) travel through a neuron in only one direction.
The axon may be surrounded by a 'coat' of lipids (fats) and proteins known as the myelin sheath which acts as an insulator.
Neurons are specialist cells that have lost the ability to reproduce themselves. Once the soma of a neuron has died the entire neuron dies, and can never be replaced.
Repair of damaged neurons only occurs in myelinated neurons.
white matter are coloured by myelin, consisting of many neurons supported by neuroglia.
grey matter is soma and dendrites or bundles of unmyelinated axons and neuralgia.
I believe the answer is Sodium, because to much of it will cause high blood pressure. Hope I helped!
Answer:
1. It can be applied when you are throwing the baseball.
2. It is applied when you run to a certain base in order to make it before you get touched by the baseball.
Explanation:
The health-related part and the skill-related part
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Answer:</h2>
Punishment (in behavior modification) appropriate to use immediately after a behavior, punishment is more likely to lead to a reduction in behavior if it immediately follows the behavior.
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Harmful effects :</u></h2><h3><u>Elicitation of undesirable emotional response and aggression :</u> </h3>
1) Punishment especially positive punishment in the form of aversive stimulation , may evoke aggressive behaviour with respondent and operant components.
2) Aggressive behavior following punishment that occurs because it has enabled the person to escape the aversive stimulation in the past is referred to as sperant aggression.
<h3><u>Escape and Avoidance :</u></h3>
1) Natural reactions to aversive stimulation.
2) As the intensity of the punisher increases , so does the likelihood of escape and avoidance.
3) Can be minimized by providing alternative responses that come into contact with reinforcement and avoid the punisher.
