Podcast
Questions and Answers
Which lymph nodes accompany the external jugular vein?
Which lymph nodes accompany the external jugular vein?
Which lymph nodes drain into the deep nodes?
Which lymph nodes drain into the deep nodes?
Where do the deep nodes drain on the right side?
Where do the deep nodes drain on the right side?
Where do the deep nodes drain on the left side?
Where do the deep nodes drain on the left side?
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What does the thoracic duct drain?
What does the thoracic duct drain?
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Where is the thoracic duct located?
Where is the thoracic duct located?
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What does the right lymphatic duct drain?
What does the right lymphatic duct drain?
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Where is the right lymphatic duct located?
Where is the right lymphatic duct located?
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How many scalene muscles are there?
How many scalene muscles are there?
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What is the function of the scalene muscles?
What is the function of the scalene muscles?
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Which muscle forms the posterior boundary of the posterior triangle of the neck?
Which muscle forms the posterior boundary of the posterior triangle of the neck?
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Which muscle forms the anterior boundary of the posterior triangle of the neck?
Which muscle forms the anterior boundary of the posterior triangle of the neck?
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What is the inferior boundary of the posterior triangle of the neck?
What is the inferior boundary of the posterior triangle of the neck?
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Which nerve is responsible for innervating the sternocleidomastoid muscle and trapezius muscle?
Which nerve is responsible for innervating the sternocleidomastoid muscle and trapezius muscle?
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Which nerve is responsible for providing sensory innervation to the skin of the posterior triangle of the neck?
Which nerve is responsible for providing sensory innervation to the skin of the posterior triangle of the neck?
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Which artery is a branch of the subclavian artery and supplies the posterior triangle of the neck?
Which artery is a branch of the subclavian artery and supplies the posterior triangle of the neck?
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Which vein opens into the subclavian vein and is located within the posterior triangle of the neck?
Which vein opens into the subclavian vein and is located within the posterior triangle of the neck?
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Which cranial nerve is contained within the carotid sheath and has many important functions?
Which cranial nerve is contained within the carotid sheath and has many important functions?
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Which nerve is responsible for motor innervation of the diaphragm?
Which nerve is responsible for motor innervation of the diaphragm?
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Which nerve lies behind the anterior scalene muscle and is formed by the ventral rami of spinal nerves C5-T1?
Which nerve lies behind the anterior scalene muscle and is formed by the ventral rami of spinal nerves C5-T1?
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Study Notes
Lymph Nodes and Vessels
- The external jugular vein is accompanied by superficial cervical lymph nodes.
- The deep nodes drain into the jugular trunk on the right side, and into the thoracic duct on the left side.
- On the right side, the deep nodes drain into the right lymphatic duct.
- On the left side, the deep nodes drain into the thoracic duct.
- The thoracic duct drains into the junction of the left subclavian and internal jugular veins.
- The thoracic duct is located in the mediastinum and thoracic cavity.
- The right lymphatic duct drains into the junction of the right subclavian and internal jugular veins.
- The right lymphatic duct is located in the root of the neck.
Scalene Muscles
- There are three scalene muscles: anterior, middle, and posterior.
- The scalene muscles elevate the first and second ribs during inspiration.
Posterior Triangle of the Neck
- The posterior boundary of the posterior triangle is formed by the trapezius muscle.
- The anterior boundary of the posterior triangle is formed by the sternocleidomastoid muscle.
- The inferior boundary of the posterior triangle is formed by the clavicle.
Nerves and Arteries
- The spinal accessory nerve is responsible for innervating the sternocleidomastoid and trapezius muscles.
- The cervical nerves (C2-C4) provide sensory innervation to the skin of the posterior triangle of the neck.
- The transverse cervical artery, a branch of the subclavian artery, supplies the posterior triangle of the neck.
- The external jugular vein opens into the subclavian vein and is located within the posterior triangle of the neck.
- The vagus nerve is contained within the carotid sheath and has many important functions.
- The phrenic nerve is responsible for motor innervation of the diaphragm.
- The brachial plexus lies behind the anterior scalene muscle and is formed by the ventral rami of spinal nerves C5-T1.
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Description
Test your knowledge of the boundaries and contents of the posterior triangle of the neck with this quiz. Learn about the nerves and muscles that make up this important anatomical region.
