Myasthenia gravis, an autoimmune disease, may develop into cats, dogs, and humans. Individuals suffering with the disease experience severe fatigue with even small levels of exertion, drooping of facial muscles, and trouble keeping their eyelids open. Introduction: Myasthenia gravis is a neuromuscular type of autoimmune disease. Autoimmune disease is a medical condition in which antibodies are formed against self-molecules in the cell, mostly against the receptors. The antibodies are formed against acetylcholine receptors in the synapse of neurons and muscle cells.

Question

Want to see the full answer?

Answer 1

Question

Chapter 45, Problem 13TYK

Summary Introduction

To review:

Myasthenia gravis, an autoimmune disease, may develop into cats, dogs, and humans. Individuals suffering with the disease experience severe fatigue with even small levels of exertion, drooping of facial muscles, and trouble keeping their eyelids open.

Introduction:

Myasthenia gravis is a neuromuscular type of autoimmune disease. Autoimmune disease is a medical condition in which antibodies are formed against self-molecules in the cell, mostly against the receptors. The antibodies are formed against acetylcholine receptors in the synapse of neurons and muscle cells.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

An experiment tested the hypothesis that exposure to pesticides decreases immune function in tadpoles. The researchers raised tadpoles in groups, in containers of the same size in a room with consistent temperature and lighting. They exposed some tadpoles to no pesticides, some to low pesticide levels, and some to high pesticide levels, and then measured the density of white blood cells (immune cells) in the tadpoles. Part a: The researchers used a(n) ______________ experiment to show the effects of pesticides on tadpoles. Group of answer choices A. natural history B. laboratory C. field D. quantitative model E. observational part b: What is the dependent variable in this experiment? Group of answer choices A. consistent temperature B. density of white blood cells C. level of pesticides D. intensity of lighting E. number of tadpoles part c: The negative control treatment in the experiment was the: Group of answer choices A. tadpole group receiving no…

. Which of these is not part of insect immunity?(A) enzyme activation of pathogen-killingchemicals(B) activation of natural killer cells(C) phagocytosis by hemocytes(D) production of antimicrobial peptides

When T cells are activated by recognizing peptide:MHC complexes on dendritic cells in the lymph node, they up-regulate the receptor CD69. For T cells expressing a given T-cell receptor, the initial strength of the T-cell receptor signal can be modulated by varying the number of peptide:MHC complexes on the dendritic cells, or by varying the affinity with which the T cell-receptor binds to the peptide:MHC complexes. As a result, T cells stimulated with stronger T-cell receptor signals will maintain high expression of CD69 for one or two days longer that if those same T cells were stimulated with weaker T-cell receptor signals. Therefore, T cells stimulated with weaker T-cell receptor signals are likely to: Die by apoptosis Undergo more rounds of proliferation that T cells stimulated with stronger T-cell receptor signals Migrate to the B-cell zones of the lymph node Have reduced effector functions, such as cytokine production Egress from the lymph node 1–2 days earlier than T cells…