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.
Answer:
Can you add the pictures and answer choices
Explanation:
The answer would be Lindsay starts a yoga group with several friends from school. More and more students join the group each week".
I hope this helps!
Answer:
The correct answer is C:
As individuals grow older, their dependability score increases over time.
Explanation:
Studies have shown that there is a strong correlation between aging and dependability.
Dependability here refers to the extent to which one relies on others in other to continue to carry out rudimentary mammalian functions.
Examples of such functions are:
- Walking
- Getting groceries
- Doing Chores
- and other physically exerting activities.
This is not to say that there are no aging adults who go into the geriatric space with their mental strength and reasonable physical strength intact. The above happens because they have good genes and disciplined themselves to maintain a healthy lifestyle of good diets as well as mental and physical excercise.
Cheers
Which one of the following choices is an effective way to prevent low-back pain?
c. maintain correct posture.
