Answer:
Grading system helps students figure the amount of knowledge they have gained. Grades can also help students making decisions about their career. Without grades, how students would show how much they have learned?
Explanation:
Answer:
Hello!!
NEUR(O) in medical abbreviations means "nerve", "nerves", "nervous system" which is used in the creation of the compound word neurology.
Hope this helps!!
Answer:
I think that you should search online about the time it needs for a person to get drunk and then do a research to see how the human body reacts so in the first day try 1 glass and then in the second 2 and keep going for a week based on the research u will be ablw to see the results
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.
The one that is a reason that a drug may not receive FDA approval is : D. the drug is ineffective
One of the function of FDA is to make sure the Drugs that sold in the market are safe , and fulfill in function.
In order to achieve this, they usually create a series of testing to make sure its efficiency and safety
