Sensory and Motor Neurons
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Questions and Answers

Which of the following word roots refers to muscle?

  • Myco/o
  • Sacr/o
  • Sthen/o
  • Myo/o (correct)

Which of the following terms refers to the attachment of a muscle to the bone or structure that does not move when the muscle contracts?

  • Belly
  • Origin (correct)
  • Insertion
  • Tendon

What does the term intrinsic refer to in regard to muscle?

  • Intrinsic describes a muscle that has an origin and insertion located in different body regions.
  • Intrinsic describes the attachment of a muscle to the bone or structure that does not move when the muscle contracts.
  • Intrinsic describes the attachment of a muscle to the bone or structure that does move when the muscle contracts.
  • Intrinsic describes a muscle that has an origin and insertion located in the same body region. (correct)

Which division of the PNS prepares the body for physical activity or fight or flight?

<p>Sympathetic (A)</p> Signup and view all the answers

Which part of a neuron carries the nerve impulse?

<p>Axon (B)</p> Signup and view all the answers

What part of a neuron usually receives the information?

<p>Dendrite (D)</p> Signup and view all the answers

What part of the axon is called the trigger zone?

<p>Axon hillock (B)</p> Signup and view all the answers

Which mineral is required for muscle cell function?

<p>Calcium (A)</p> Signup and view all the answers

What is the recommended daily allowance of protein for a person of average weight?

<p>46–56 g (D)</p> Signup and view all the answers

Which of the following is not a function of the muscular system?

<p>Electrolyte balance (D)</p> Signup and view all the answers

What muscular disorder is characterized by painful muscle spasms?

<p>Cramp (B)</p> Signup and view all the answers

Which of the following is the term for a muscle that holds an origin stable for another muscle?

<p>Fixator (A)</p> Signup and view all the answers

Which of the following is the term for muscles that have the same action?

<p>Synergists (B)</p> Signup and view all the answers

Which of the following is the term for muscles that have opposite actions?

<p>Antagonists (C)</p> Signup and view all the answers

Which of the following is the term for the main muscle that performs an action?

<p>Prime mover (A)</p> Signup and view all the answers

Which of the following muscles does not originate on the ribs?

<p>Diaphragm (D)</p> Signup and view all the answers

What is the function of the rectus abdominus?

<p>To compress the abdomen (C)</p> Signup and view all the answers

Which of the following muscles inserts on the metacarpals and the carpals?

<p>Extensor carpi ulnaris (B)</p> Signup and view all the answers

What are the functional units of a skeletal muscle fiber?

<p>Sarcomere (C)</p> Signup and view all the answers

Which statement accurately describes a muscle's response to nerve stimulation?

<p>All of these answers are correct. (C)</p> Signup and view all the answers

Which theory of muscle contraction involves thick myofilaments grabbing thin myofilaments and pulling them toward the center of the sarcomere?

<p>Sliding filament theory (C)</p> Signup and view all the answers

What is a power stroke?

<p>Myosin pulling on actin to draw Z-lines toward the center, shortening the sarcomere (C)</p> Signup and view all the answers

In which phase of a muscle contraction is calcium actively transported back to the sarcoplasmic reticulum?

<p>Relaxation phase (C)</p> Signup and view all the answers

Which lobe of the cerebrum is responsible for hearing?

<p>Temporal (B)</p> Signup and view all the answers

What is the function of the frontal lobe of the cerebrum?

<p>All of these are correct (A)</p> Signup and view all the answers

What is the function of the occipital lobe of the cerebrum?

<p>Vision (C)</p> Signup and view all the answers

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