Posterior Triangle of the Neck Anatomy Quiz

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Questions and Answers

Which lymph nodes accompany the external jugular vein?

Lymph nodes on the right side

Deep group of cervical lymph nodes

Superficial group of cervical lymph nodes (correct)

Lymph nodes on the left side

Which lymph nodes drain into the deep nodes?

Deep group of cervical lymph nodes

Superficial group of cervical lymph nodes (correct)

Lymph nodes on the right side

Lymph nodes on the left side

Where do the deep nodes drain on the right side?

Thoracic duct

Right lymphatic duct (correct)

Deep group of cervical lymph nodes

Superficial group of cervical lymph nodes

Where do the deep nodes drain on the left side?

Thoracic duct Signup and view all the answers

What does the thoracic duct drain?

The entire body except the right side of the head, neck, and thorax above diaphragm Signup and view all the answers

Where is the thoracic duct located?

At the junction of the left internal jugular vein and left subclavian vein Signup and view all the answers

What does the right lymphatic duct drain?

The right side of the head, neck, and thorax above diaphragm Signup and view all the answers

Where is the right lymphatic duct located?

At the junction of the right internal jugular vein and right subclavian vein Signup and view all the answers

How many scalene muscles are there?

3 Signup and view all the answers

What is the function of the scalene muscles?

Flex neck laterally and elevate associated rib during inspiration Signup and view all the answers

Which muscle forms the posterior boundary of the posterior triangle of the neck?

Trapezius muscle Signup and view all the answers

Which muscle forms the anterior boundary of the posterior triangle of the neck?

Sternocleidomastoid muscle Signup and view all the answers

What is the inferior boundary of the posterior triangle of the neck?

Clavicle Signup and view all the answers

Which nerve is responsible for innervating the sternocleidomastoid muscle and trapezius muscle?

Spinal accessory nerve Signup and view all the answers

Which nerve is responsible for providing sensory innervation to the skin of the posterior triangle of the neck?

Supraclavicular nerves Signup and view all the answers

Which artery is a branch of the subclavian artery and supplies the posterior triangle of the neck?

Transverse cervical artery Signup and view all the answers

Which vein opens into the subclavian vein and is located within the posterior triangle of the neck?

External jugular vein Signup and view all the answers

Which cranial nerve is contained within the carotid sheath and has many important functions?

Vagus nerve Signup and view all the answers

Which nerve is responsible for motor innervation of the diaphragm?

Phrenic nerve Signup and view all the answers

Which nerve lies behind the anterior scalene muscle and is formed by the ventral rami of spinal nerves C5-T1?

Brachial plexus Signup and view all the answers

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.