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Questions and Answers
What are the boundaries of the axilla's apex?
What are the boundaries of the axilla's apex?
Which branch of the brachial plexus is responsible for innervating the serratus anterior muscle?
Which branch of the brachial plexus is responsible for innervating the serratus anterior muscle?
Which of the following structures is NOT contained within the axilla?
Which of the following structures is NOT contained within the axilla?
What is the root value of the axillary (circumflex) nerve?
What is the root value of the axillary (circumflex) nerve?
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Which muscle is NOT part of the posterior wall of the axilla?
Which muscle is NOT part of the posterior wall of the axilla?
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Which trunk does the musculocutaneous nerve originate from?
Which trunk does the musculocutaneous nerve originate from?
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Which nerve is primarily responsible for innervating the latissimus dorsi muscle?
Which nerve is primarily responsible for innervating the latissimus dorsi muscle?
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What structure passes through the quadrangular space?
What structure passes through the quadrangular space?
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What is the primary function of the brachial plexus?
What is the primary function of the brachial plexus?
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Which of the following muscles contributes to the medial wall of the axilla?
Which of the following muscles contributes to the medial wall of the axilla?
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Study Notes
Axilla Definition and Boundaries
- Pyramidal space between upper parts of arm and chest
- Apex (cervicoaxillary canal): connects neck and axilla, transmits vessels and nerves to upper limb
- Bounded by: medial (15th rib), anterior (clavicle), posterior (scapula)
Axilla Walls
- Anterior: Pectoralis major, clavipectoral fascia, subclavius, pectoralis minor
- Posterior: Subscapularis, latissimus dorsi, teres major
- Medial: Upper 5 ribs and intercostal muscles, upper part of serratus anterior
- Lateral: Upper part of humerus shaft, coracobrachialis, biceps, bicipital groove of humerus
Axilla Contents
- Axillary artery
- Axillary vein
- Brachial plexus
- Axillary lymph nodes
- Axillary fat
- Loose connective tissue
Axilla Base
- Skin
- Axillary fascia
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Description
Test your knowledge on the definition, boundaries, and contents of the axilla. This quiz covers the anatomical features including the walls and base of the axilla, providing a comprehensive understanding of its structure and significance. Perfect for students studying human anatomy or health sciences.
