Podcast
Questions and Answers
Which muscle shares in the formation of the medial wall of the axilla?
Which muscle shares in the formation of the medial wall of the axilla?
What is the root value of the lateral cord of the brachial plexus?
What is the root value of the lateral cord of the brachial plexus?
Which group of axillary lymph nodes receives lymphatic drainage directly from the tail of the breast?
Which group of axillary lymph nodes receives lymphatic drainage directly from the tail of the breast?
Which structure is not listed as a content of the axilla?
Which structure is not listed as a content of the axilla?
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In the labeled diagram provided, which number corresponds to the axillary vein?
In the labeled diagram provided, which number corresponds to the axillary vein?
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Which structure forms the apex of the axilla?
Which structure forms the apex of the axilla?
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What muscle contributes to both the anterior and posterior walls of the axilla?
What muscle contributes to both the anterior and posterior walls of the axilla?
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Which structure is NOT a main content of the axilla?
Which structure is NOT a main content of the axilla?
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Which muscle is part of the lateral wall of the axilla?
Which muscle is part of the lateral wall of the axilla?
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Which nerve innervates the small skin and muscles of the back of the trunk?
Which nerve innervates the small skin and muscles of the back of the trunk?
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Which muscle contributes to both the anterior wall and posterior wall of the axilla?
Which muscle contributes to both the anterior wall and posterior wall of the axilla?
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What is formed by the ventral rami of C5, 6, 7, 8 & T1 nerves?
What is formed by the ventral rami of C5, 6, 7, 8 & T1 nerves?
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Which trunk of the brachial plexus is formed by C8 & T1 nerves?
Which trunk of the brachial plexus is formed by C8 & T1 nerves?
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Which part of the brachial plexus is formed by the anterior divisions of the upper and middle trunks?
Which part of the brachial plexus is formed by the anterior divisions of the upper and middle trunks?
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Where do the supraclavicular roots and trunks lie?
Where do the supraclavicular roots and trunks lie?
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Which group of axillary lymph nodes is located in front of the subscapularis muscle?
Which group of axillary lymph nodes is located in front of the subscapularis muscle?
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Where is the central group of axillary lymph nodes located?
Where is the central group of axillary lymph nodes located?
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Where do the central group lymph nodes lie?
Where do the central group lymph nodes lie?
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Which group drains lymph vessels directly from the breast?
Which group drains lymph vessels directly from the breast?
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What is a common clinical manifestation of breast cancer in relation to lymph nodes?
What is a common clinical manifestation of breast cancer in relation to lymph nodes?
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Which group receives most of the lymph vessels from the upper limb?
Which group receives most of the lymph vessels from the upper limb?
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What is the significance of examining axillary lymph nodes in relation to breast cancer?
What is the significance of examining axillary lymph nodes in relation to breast cancer?
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Where are the Infraclavicular (deltopectoral) lymph nodes located?
Where are the Infraclavicular (deltopectoral) lymph nodes located?
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Study Notes
Axilla Formation and Walls
- The teres major muscle shares in the formation of the medial wall of the axilla.
- The serratus anterior muscle contributes to both the anterior and posterior walls of the axilla.
- The pectoralis minor muscle forms the anterior wall of the axilla.
- The subscapularis muscle contributes to the posterior wall of the axilla.
Brachial Plexus
- The lateral cord of the brachial plexus has a root value of C5-6.
- The medial cord of the brachial plexus has a root value of C8-T1.
- The brachial plexus is formed by the ventral rami of C5, 6, 7, 8, and T1 nerves.
- The lateral cord is formed by the anterior divisions of the upper and middle trunks.
- The medial cord is formed by the anterior division of the lower trunk.
Axillary Lymph Nodes
- The central group of axillary lymph nodes receives lymphatic drainage directly from the tail of the breast.
- The central group of axillary lymph nodes is located behind the pectoralis minor muscle.
- The infraclavicular (deltopectoral) lymph nodes are located superficially in the deltopectoral groove.
- The apical group of axillary lymph nodes receives most of the lymph vessels from the upper limb.
Clinical Significance
- Examining axillary lymph nodes is significant in relation to breast cancer, as they can be affected by it.
- A common clinical manifestation of breast cancer in relation to lymph nodes is the presence of palpable axillary lymph nodes.
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Description
Test your knowledge on the anatomy of axillary lymph nodes, including their location, drainage pathways, and group divisions. Learn about the different groups of axillary lymph nodes and the organs that drain into each group.
