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Neuroanatomy & Physiology Flashcards

6 cards from real EMG practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Neuroanatomy & Physiology flashcards as text

  1. Which structure transmits signals from the spinal cord to skeletal muscles?

    Answer: Motor neurons

    Motor neurons carry electrical signals from the central nervous system to muscles, enabling movement.

  2. What part of the brain is primarily responsible for coordinating voluntary movement?

    Answer: Cerebellum

    The cerebellum helps regulate balance, posture, and the timing of voluntary movements.

  3. Which ion is primarily responsible for initiating muscle contraction?

    Answer: Calcium

    Calcium ions are released into the muscle fiber during depolarization, triggering the contraction process.

  4. What is the function of the myelin sheath in neurons?

    Answer: Speeds up nerve impulse conduction

    The myelin sheath insulates nerve fibers and increases the speed of electrical signal transmission along the axon.

  5. Which neurotransmitter is most associated with neuromuscular junctions?

    Answer: Acetylcholine

    Acetylcholine is released from motor neurons at neuromuscular junctions, initiating muscle contraction.

  6. What role does the dorsal root of a spinal nerve play?

    Answer: Transmits sensory information to the spinal cord

    The dorsal root transmits sensory information from the peripheral nervous system to the spinal cord.

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