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Questions and Answers

What type of muscle fiber arrangement features fascicles arranged in concentric circles?

  • Convergent
  • Parallel
  • Circular (correct)
  • Pennate
  • Which type of muscle has the main responsibility for a specific movement?

  • Fixator
  • Agonist (correct)
  • Antagonist
  • Synergist
  • What best describes a muscle that stabilizes the origin of a prime mover?

  • Antagonist
  • Agonist
  • Fixator (correct)
  • Synergist
  • What is the term for the attachment of a muscle to a movable bone?

    <p>Insertion</p> Signup and view all the answers

    Which of the following is NOT a factor that results from increased muscle use?

    <p>Increase in fatigue susceptibility</p> Signup and view all the answers

    What type of muscle performs actions opposite of the prime mover?

    <p>Antagonist</p> Signup and view all the answers

    Which arrangement of muscle fibers involves tendon running the length of the muscle with short fascicles attached at an angle?

    <p>Unipennate</p> Signup and view all the answers

    What is the name of the classification based on muscle location?

    <p>Location</p> Signup and view all the answers

    What structure is formed by the anterior rami of C5-C8 and T1?

    <p>Brachial plexus</p> Signup and view all the answers

    What best describes the direction of muscle fibers classified as 'rectus'?

    <p>Straight</p> Signup and view all the answers

    What type of muscle is characterized by being striated and voluntary in action?

    <p>Skeletal Muscle</p> Signup and view all the answers

    Which muscle type is involuntary and found in the walls of GI organs and blood vessels?

    <p>Smooth Muscle</p> Signup and view all the answers

    Which connective tissue wrapping surrounds a single muscle fiber?

    <p>Endomysium</p> Signup and view all the answers

    What is the primary function of skeletal muscle?

    <p>Facilitating movement of the skeleton</p> Signup and view all the answers

    What is a common sign of Erb-Duchenne palsy?

    <p>Pronated and medially rotated arm</p> Signup and view all the answers

    What term describes the ability of a muscle to return to its original length after being stretched?

    <p>Elasticity</p> Signup and view all the answers

    What is the role of the neuromuscular junction?

    <p>Serve as the site of nerve and muscle association</p> Signup and view all the answers

    Which nerves are primarily affected in Klumpke paralysis?

    <p>Median, Ulnar, and Sympathetic T1</p> Signup and view all the answers

    Which type of muscle is characterized by branched, tubular, uninucleated cells and is found in the heart?

    <p>Cardiac Muscle</p> Signup and view all the answers

    What will a patient with wrist drop be unable to do?

    <p>Extend the fingers</p> Signup and view all the answers

    What is the connective tissue structure that attaches muscle to bone?

    <p>Tendon</p> Signup and view all the answers

    What type of injury can lead to wrist drop?

    <p>Fracture at the mid shaft of humerus</p> Signup and view all the answers

    What is the primary characteristic of cardiac muscle compared to skeletal muscle?

    <p>It is striated</p> Signup and view all the answers

    Which symptom is NOT associated with hyperabduction syndrome?

    <p>Loss of function in the hand</p> Signup and view all the answers

    What is a possible cause of Klumpke paralysis during childbirth?

    <p>Excessive pulling of the upper limb</p> Signup and view all the answers

    What primarily causes injury to the Brachial Plexus?

    <p>Prolonged hyperabduction of the arm</p> Signup and view all the answers

    Which of the following symptoms indicates complete paralysis?

    <p>Complete lack of movement</p> Signup and view all the answers

    What is Brachial plexus neuritis commonly associated with?

    <p>Inflammation of the Brachial Plexus</p> Signup and view all the answers

    Loss of sensation due to injury to the Brachial Plexus is referred to as what?

    <p>Anesthesia</p> Signup and view all the answers

    Which nerve is affected by Brachial plexus neuritis?

    <p>Nerves from the superior trunk</p> Signup and view all the answers

    What might lead to signs and symptoms of Brachial Plexus injury?

    <p>Vaccination or upper respiratory infection</p> Signup and view all the answers

    Which structure can compress the cords of the Brachial Plexus?

    <p>Coracoid process</p> Signup and view all the answers

    What can be a consequence of profound muscle weakness due to Brachial Plexus injury?

    <p>Muscle atrophy</p> Signup and view all the answers

    Which nerve is NOT derived from the posterior division of the Brachial Plexus?

    <p>Musculocutaneous nerve</p> Signup and view all the answers

    Which nerve innervates the suprascapular region?

    <p>Suprascapular nerve</p> Signup and view all the answers

    Which nerve primarily innervates the biceps brachii and brachialis muscles?

    <p>Musculocutaneous nerve</p> Signup and view all the answers

    What is the primary function of the ulnar nerve?

    <p>Innervate the intrinsic hand muscles</p> Signup and view all the answers

    Which of the following nerves innervates the deltoid muscle?

    <p>Axillary nerve</p> Signup and view all the answers

    From which part of the brachial plexus does the radial nerve originate?

    <p>Posterior cord</p> Signup and view all the answers

    What muscles are innervated by the median nerve?

    <p>Anterior forearm muscles</p> Signup and view all the answers

    Which nerves are responsible for the cutaneous innervation of the arm?

    <p>Axillary nerve and Radial nerve</p> Signup and view all the answers

    Which of the following muscles is NOT innervated by the radial nerve?

    <p>Flexor carpi ulnaris</p> Signup and view all the answers

    Which cord of the brachial plexus is the median nerve derived from?

    <p>Both lateral and medial cords</p> Signup and view all the answers

    Which muscle does the radial nerve primarily innervate?

    <p>Extensor carpi radialis longus</p> Signup and view all the answers

    What is the primary role of the axillary nerve?

    <p>Innervate the teres minor and deltoid muscles</p> Signup and view all the answers

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