Anatomy of the Right Humerus Quiz

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Questions and Answers

What is the greater tubercle?

  • A depression in the humerus
  • A bony prominence on the humerus (correct)
  • A part of the elbow joint
  • A type of muscle tissue

What is the lesser tubercle?

  • The head of the radius
  • A tendon
  • A cavity within the humerus
  • A small projection on the humerus (correct)

What is deltoid tuberosity?

  • An area that connects the radius and ulna
  • A feature of the shoulder blade
  • A smooth area on the humerus
  • A roughened area on the posterior aspect of the humerus (correct)

What is the radial fossa?

<p>A depression in the humerus for the radius (A)</p> Signup and view all the answers

What is the coronoid fossa?

<p>A depression for the ulna (C)</p> Signup and view all the answers

What is the capitulum?

<p>A rounded articular surface on the humerus (D)</p> Signup and view all the answers

What is the trochlea?

<p>A pulley-shaped structure on the humerus (B)</p> Signup and view all the answers

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Study Notes

Key Features of the Right Humerus

  • Greater Tubercle

    • Located on the proximal end of the humerus.
    • Serves as a site for muscle attachment, particularly for the rotator cuff muscles.

  • Lesser Tubercle

    • Positioned anteriorly compared to the greater tubercle.
    • Also a site for muscle attachment, notably for the subscapularis muscle.

  • Deltoid Tuberosity

    • A roughened area on the lateral shaft of the humerus.
    • Provides attachment for the deltoid muscle and is approximately halfway down the bone.

  • Radial Fossa

    • A shallow depression on the anterior aspect of the humerus, above the capitulum.
    • Accommodates the head of the radius during elbow flexion.

  • Coronoid Fossa

    • A deeper pit located above the trochlea on the anterior side.
    • Receives the coronoid process of the ulna when the elbow is flexed.

  • Capitulum

    • A rounded structure on the lateral side of the distal humerus.
    • Articulates with the head of the radius, playing a crucial role in elbow movement.

  • Trochlea

    • Located on the medial side of the distal humerus and shaped like a spool.
    • Connects with the ulna, facilitating elbow extension and flexion.

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