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

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

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

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

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

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

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

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

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

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

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

Which connective tissue wrapping surrounds a single muscle fiber?

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

What is the primary function of skeletal muscle?

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

What is a common sign of Erb-Duchenne palsy?

<p>Pronated and medially rotated arm (A)</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 (C)</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 (B)</p> Signup and view all the answers

Which nerves are primarily affected in Klumpke paralysis?

<p>Median, Ulnar, and Sympathetic T1 (A)</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 (B)</p> Signup and view all the answers

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

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

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

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

What type of injury can lead to wrist drop?

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

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

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

Which symptom is NOT associated with hyperabduction syndrome?

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

What is a possible cause of Klumpke paralysis during childbirth?

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

What primarily causes injury to the Brachial Plexus?

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

Which of the following symptoms indicates complete paralysis?

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

What is Brachial plexus neuritis commonly associated with?

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

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

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

Which nerve is affected by Brachial plexus neuritis?

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

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

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

Which structure can compress the cords of the Brachial Plexus?

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

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

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

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

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

Which nerve innervates the suprascapular region?

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

Which nerve primarily innervates the biceps brachii and brachialis muscles?

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

What is the primary function of the ulnar nerve?

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

Which of the following nerves innervates the deltoid muscle?

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

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

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

What muscles are innervated by the median nerve?

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

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

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

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

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

Which muscle does the radial nerve primarily innervate?

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

What is the primary role of the axillary nerve?

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

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