B our enjoyment of nature
Answer:
Around the 1943, centuries ago
Explanation:
Local anesthetics inhibit nerve conduction in a reversible manner without altering the nerve. The inhibition appears rapidly and for a longer or shorter duration depending on the products and the concentrations used. The extent of the territory rendered insensitive to pain depends on the modes of administration of the local anesthetic, either at the level of the nerve endings, or at the level of a nervous trunk, for example.
They act at the level of the neuronal membrane by interfering with the process of excitation and conduction. The anesthetic crosses the axon membrane, rich in lipids, in the form of base before taking up a cationic form on the internal face of the neuron where the pH is more acidic.
At this level, there is a blockage of nerve conduction by decreasing the membrane permeability to sodium ions that occurs during the depolarization phase. As the progression of the anesthetic action along the nerve increases, the threshold of excitability increases and the conduction time increases. This is completely blocked from a certain concentration of local anesthetic.
The nerve fibers are unequally sensitive to the action of local anesthetics: they disappear in order: the painful, thermal, tactile sensations.
Upon the positive Kernig and Brudzinski sign, the nurse should interpret meningeal irritation.
Kernig sign indicates the stiffness of hamstrings with pain on knee extension. And Brudzinski sign is indicated when passive forward flexion of the neck causes the patient to involuntarily raise his knees or hips in flexion.
Meningeal irritation is caused due to the infectious meningitis. Meninges are the three layers of tissues protecting the brain and spinal cord. The symptoms include headache, stiffness of neck and fever. nausea and vomiting can also happen. It can be diagnosed by lumbar test and neuroimaging.
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<u>Answer:</u>
Only failure in school performance and poor coping skills
Option: (D)
<u>Explanation:</u>
- Drug abuse is a harmful habit. In fact, is a harmful brain disease due to which a person repeatedly needs to consume a drug in spite of the harmful consequences of consuming that drug.
- Due to drug abuse, the person loses his/her ability to control the need to consume the drug.
- Drug abuse has many harmful consequences. Some of them are failure in academic performance and poor coping skill.
- The person with drug addiction has low learning ability and lacks the socializing skills.
