1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leona [35]
3 years ago
8

Local anesthetics block voltage-gated Na+ channels, but they do not block mechanically gated ion channels. Sensory receptors for

touch (and pressure) respond to physical deformation of the receptors, resulting in the opening of specific mechanically gated ion channels. Why does injection of a local anesthetic into a finger still cause a loss of the sensation of touch from the finger?
Health
1 answer:
Vinvika [58]3 years ago
3 0

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.

You might be interested in
There were more then how many trucks over 10,000 pounds involved in traffic crashes in the us in 2012
Gelneren [198K]
<span>There were 330,000 trucks in the traffic crashes. Hope that helps or at least I hope that was what you were asking.
</span>
3 0
3 years ago
We need quality food justify it...
Zigmanuir [339]
Food gives you nutritional value so if you eat junk food all the time you won’t be getting those important nutrients that you need
8 0
3 years ago
What is paper bag cooking and low pressure cooking ​
Mice21 [21]

Answer:

paper bag cooking is when you cook with a paper bag on the fire to lower the heat , low presure cooking is cooking with low presure of fire

5 0
3 years ago
which of these is overconsumed in the United States? A. Vitamin C B. Leafy green vegetables C. Sweet Potatoes D. Salty
S_A_V [24]

Answer:

A. Salty

Explanation:

6 0
2 years ago
Read 2 more answers
What is the role of creating in the body?
dimaraw [331]
I believe you meant creatine instead of creating? The answer is that Creatine<span> is an organic acid that plays a key </span>role<span> in supplying energy for muscle cells during intense activity. </span>Creatine<span> is produced naturally by the </span>body<span> and found in small quantities in animal products. </span>Creatine<span> stored in muscle cells helps produce ATP, which is the primary energy currency in the </span>body<span>.</span>
7 0
3 years ago
Other questions:
  • Triggers that may lead to an episode of drug abuse/use can be______.
    15·2 answers
  • why is it important to understand the urinary, reproductive, and endocrine systems and how they relate to medical terms, compone
    9·1 answer
  • The bottom number of your target heart rate tells you
    13·1 answer
  • Anatomy &amp; Physiology Question:
    12·2 answers
  • ¿Cuál es la importancia de hacer ejercicio y comer sano?
    7·2 answers
  • Which of the following describes how a pocket talker can assist in communication between a health care provider and patient? A.
    10·2 answers
  • Taking a large amount of this vitamin can be toxic because it accumulates in the liver.
    9·1 answer
  • Explaim the interrelationship between popoulation environment and development​
    12·1 answer
  • Elden grows wheat on his land. However, his wheat farm is on a steep slope and hence more prone to soil erosion.
    12·1 answer
  • How to not depression?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!