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ATI TEAS: Neuromuscular System
This deck contains 19 flashcards that cover key concepts related to the neuromuscular system, including the central and peripheral nervous systems, types of neurons, nerve bundles, muscle structure, and neuromuscular disorders.
What does the CNS consist of?
Brain & spinal cord
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Key Terms
Term
Definition
What does the CNS consist of?
Brain & spinal cord
What is the peripheral nervous system?
Network of spinal nerves to and from the spinal cord in the body
What are afferent neurons?
Sensory neurons that carry signal from stimuli to the CNS
What are efferent neurons?
Motor neurons that carry signal from CNS to muscles
What are somatic nerves?
Voluntary movement
What are autonomic/visceral nerves?
Involuntary movement
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| Term | Definition |
|---|---|
What does the CNS consist of? | Brain & spinal cord |
What is the peripheral nervous system? | Network of spinal nerves to and from the spinal cord in the body |
What are afferent neurons? | Sensory neurons that carry signal from stimuli to the CNS |
What are efferent neurons? | Motor neurons that carry signal from CNS to muscles |
What are somatic nerves? | Voluntary movement |
What are autonomic/visceral nerves? | Involuntary movement |
What is the function of neurons? | Cell that conducts electrical nerve impulse |
What is the order of neuron cell parts that an electrical impulse flows? | Dendrites, cell body, axon, axon terminals |
What is a synapse? | Gap between that neuro signal passes to other neurons, muscles, or glands |
What are nerves? | Bundles of nerve fibers |
Which nerve bundle has both afferent and efferent fibers? | Spinal |
What is a myofibril? | Contractile muscle filaments made of a strand of sacromeres |
What is actin? | Thinner contractile muscle filament; moves past myosin during contraction |
What is myosin? | Thicker stationary muscle filament |
What is a sacromere? | Contracting unit of a muscle; a section of myofibril |
What is a muscle fascicle? | a bundle of muscle fibers |
What is contraction? | When the sacromere shortens of a muscle shortens; uses ATP; actin and myosin filaments slide past each other, but stay the same length |
What is amyotrophic lateral sclerosis (ALS) aka Lou Gehrig’s disease? | Motor neurons degenerate leading to loss of voluntary movement |
What is muscular dystrophy? | Abnormal genes prevent the protein that makes muscles causing muscles to weaken. Both voluntary and involuntary muscles are compromised. |