In the disease myasthenia gravis, the immune system attacks the receptors for the neurotransmitter acetylcholine. A drug is used to inhibit the enzyme acetylcholinesterase, which normally removes the neurotransmitter. This improves the condition of the
patient. How does this work?
What will be an ideal response?
If a person with this disease has fewer receptors for acetylcholine, it would help to inhibit the breakdown of the neurotransmitter in the synapse. Increasing the concentration of the neurotransmitter in the synapse could increase the likelihood that some of the neurotransmitter will bind with the receptors.
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Which of the following is often associated with poultry products?
A. Salmonella B. Campylobacter C. Pseudomonas D. Lactobacillus E. Salmonella AND Campylobacter
Which of the following is (are) NOT trend(s) of
vertebrate evolution? a. conversion of the support for locomotion from the notochord to the vertebral column b. expansion of the nerve cord to form the brain and spinal cord c. changes in the respiratory system from gills to lungs with accompanying changes in the circulatory system d. the development of fewer, more efficient chambers in the heart e. modification of limbs for more efficient movement
Gene mutation occurs at any time, without respect to the mutation's adaptive value or benefit to the organism.
Answer the following statement true (T) or false (F)
Standing out in center field, the baseball player watches the hitter's bat strike the ball and then, slightly later, hears the sound of the impact. What types of sensory receptors did the player just use?
A) thermoreceptors and chemoreceptors B) photoreceptors and mechanoreceptors C) chemoreceptors and pain receptors D) pain receptors and thermoreceptors