Mammary Gland and Axillary Anatomy Quiz
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Questions and Answers

Which artery is responsible for supplying blood to the lateral region of the axillary gland?

  • Subclavian artery
  • Lateral thoracic artery (correct)
  • Internal thoracic artery
  • Acromio-thoracic artery
  • What percentage of lymphatic vessels drain into the parasternal nodes?

  • 30%
  • 75%
  • 25% (correct)
  • 50%
  • Which structure primarily aids in the lymphatic drainage of the medial part of the axillary gland?

  • Internal thoracic artery (correct)
  • Deep lymphatic plexus
  • Superficial apical lymph nodes
  • Pectoral group of axillary nodes
  • Where does the upper part of the axillary gland predominantly drain lymph?

    <p>Superficial apical group of axillary lymph nodes</p> Signup and view all the answers

    The deep lymphatic plexus originates from which area in the axillary gland?

    <p>Pectoralis major fascia</p> Signup and view all the answers

    Which statement about the mammary gland's shape is accurate?

    <p>The mammary gland's base is wide and extends from the sternum to the mid-axillary line.</p> Signup and view all the answers

    What is the structure and function of Cooper's ligaments within the mammary gland?

    <p>They are fibrous septa that connect to the skin and support the gland.</p> Signup and view all the answers

    Where is the apex of the mammary gland located?

    <p>Opposite the 4th intercostal space.</p> Signup and view all the answers

    What are the characteristics of the lobes in the mammary gland?

    <p>Each lobe radiates outward from the nipple and drains into a lactiferous sinus.</p> Signup and view all the answers

    Which feature is NOT found in the apex of the mammary gland?

    <p>Fatty tissue</p> Signup and view all the answers

    What is the primary origin of the clavicular head of the pectoralis major muscle?

    <p>Medial 1/2 of the anterior surface of the clavicle.</p> Signup and view all the answers

    Which structure does the axillary fascia primarily form?

    <p>The floor of the axilla.</p> Signup and view all the answers

    From which area does the sternocostal head of the pectoralis major NOT originate?

    <p>Medial 1/2 of the anterior surface of the clavicle.</p> Signup and view all the answers

    What is the insertion point of the pectoralis major muscle?

    <p>Lateral lip of the bicipital groove.</p> Signup and view all the answers

    Which fascia lies deep to the clavicular head of the pectoralis major?

    <p>Clavi-pectoral fascia.</p> Signup and view all the answers

    What is the primary action of the entire pectoralis major muscle?

    <p>Flexion, adduction, and medial rotation of the arm</p> Signup and view all the answers

    Which statement correctly describes the origins of the laminae forming the tendon of the pectoralis major?

    <p>The anterior lamina is formed by the clavicular head and upper fibers of the sternocostal head.</p> Signup and view all the answers

    Which nerve is primarily responsible for innervating the clavicular head of the pectoralis major?

    <p>Lateral pectoral nerve</p> Signup and view all the answers

    What anatomical structure is found within the delto-pectoral groove?

    <p>Cephalic vein</p> Signup and view all the answers

    Which of the following nerves penetrates the pectoralis minor muscle?

    <p>Medial pectoral nerve</p> Signup and view all the answers

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