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What is a neuromuscular disorder characterized by relapsing weakness of skeletal muscles?
Myasthenia gravis is a neuromuscular disorder characterized by muscle weakness and fatigue, typically worsening with activity and improving with rest. It is caused by an autoimmune response that targets acetylcholine receptors at the neuromuscular junction, leading to impaired communication between nerves and muscles. Treatment often involves medications that help improve nerve impulse transmission and reduce symptoms.
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What type of muscle tissue has neuromuscular junctions?
skeletal muscle
What is the narrow space that separates the motor neuron and the skeletal muscle fiber in a neuromuscular junction called?
Neuromuscular junction or neuromuscular synapse
What does curare act by in the neuromuscular junction?
Curare acts by blocking nicotinic acetylcholine receptors at the neuromuscular junction, preventing the binding of acetylcholine to these receptors. This leads to muscle paralysis since acetylcholine is unable to initiate muscle contraction.
What are neuromuscular blocking agents?
Neuromuscular blocking agents are medications that work by blocking the transmission of nerve signals to the muscles, resulting in muscle paralysis. They are used during surgical procedures to facilitate intubation, reduce muscle movements, and provide muscle relaxation. These medications are administered by anesthesiologists and require monitoring to prevent complications.
What are three autosomal dominant conditions?
Huntington's disease: a neurodegenerative disorder characterized by progressive movement, cognitive, and psychiatric symptoms. Marfan syndrome: a connective tissue disorder that affects the heart, blood vessels, eyes, and skeletal system. Polycystic kidney disease: a genetic disorder causing fluid-filled cysts to form in the kidneys, potentially leading to kidney failure.
What is a chronic progressive neuromuscular disorder that causes severe skeletal muscle weakness?
myasthenia gravis
What type of muscle tissue has neuromuscular junctions?
skeletal muscle
Action potentials are conducted into a skeletal muscle fiber by?
C. neuromuscular junctions
Each skeletal muscle fiber is controlled by a motor neuron at a single?
neuromuscular junction
Skeletal muscle fiber contraction begins when?
Acetylcholine is released into the neuromuscular junction by the axon terminal
What is the narrow space that separates the motor neuron and the skeletal muscle fiber in a neuromuscular junction called?
Neuromuscular junction or neuromuscular synapse
Which of these junctions represents the connection between the tip of a neuron and a skeletal muscle cell from which Acetylcholine diffuses?
Neuromuscular
Is bone tumor bone cyst hypophosphatasia osteomalacia haematopoiesis or osteoporosis a skeletal disorder?
Hypophosphatasia is a metabolic disorder that can cause skeletal deformities.
Which disorder has to do with women and the skeletal system?
osteoporosis
What is the point of contact between a motor neuron and a skeletal muscle cell called?
This point is often called the neuromuscular junction or motor end plate. ?The neurotransmitter used here is acetylcholine.Many diseases occur with dysfunction at this junction, like Myesthenia Gravis, botulism, or Lambert Eaton Myasthenic Syndrome.
The axon terminals of a nerve cell and the sarcolemma of a skeletal muscle cell join at the?
The axon terminals of a nerve cell and the sarcolemma of a skeletal muscle cell join at the neuromuscular junction. This is where the nerve impulse triggers the release of neurotransmitters, such as acetylcholine, which initiate muscle contraction by binding to receptors on the sarcolemma.
What does curare act by in the neuromuscular junction?
Curare acts by blocking nicotinic acetylcholine receptors at the neuromuscular junction, preventing the binding of acetylcholine to these receptors. This leads to muscle paralysis since acetylcholine is unable to initiate muscle contraction.
