Neurovasculature of Head & Neck: Common Carotid Artery

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Questions and Answers

At what level does the common carotid artery terminate?

T1 vertebra

Lower border of the thyroid cartilage

C7 vertebra

Upper border of the thyroid cartilage (correct)

Which artery arises from the anterior aspect of the external carotid artery?

Maxillary artery

Occipital artery

Superficial temporal artery

Facial artery (correct)

Where does the left common carotid artery originate from?

Superior vena cava

Aortic arch (correct)

Brachiocephalic trunk

Innominate artery

Where does the right common carotid artery arise from?

Brachiocephalic trunk Signup and view all the answers

What is the termination point of the external carotid artery?

In the substance of the parotid gland, behind the neck of the mandible Signup and view all the answers

What structures does the common carotid artery travel with within the carotid sheath?

Internal jugular vein and vagus nerve Signup and view all the answers

The glossopharyngeal nerve originates in which part of the brain?

Medulla oblongata Signup and view all the answers

Which vein drains into the subclavian vein?

External jugular vein Signup and view all the answers

Which artery supplies the inferior surface of the cerebellum?

Posterior inferior cerebellar artery Signup and view all the answers

Where does the anterior spinal artery descend along?

Anterior aspect of the spinal cord Signup and view all the answers

Where does the glossopharyngeal nerve leave the cranium?

Jugular foramen Signup and view all the answers

Which arteries join to form the basilar artery?

Vertebral arteries Signup and view all the answers

What is the function of the tympanic nerve?

Sensory innervation to the middle ear Signup and view all the answers

Where does the posterior auricular vein and retromandibular vein combine?

Immediately posterior to the angle of mandible Signup and view all the answers

At which level does the sternal angle (Angle of Louis) lie?

Opposite the intervertebral disc between the fourth and fifth thoracic vertebrae Signup and view all the answers

Which rib only articulates with T10 and has one articular facet?

10th rib Signup and view all the answers

Which muscle is considered as the most important muscle of the thoracic wall?

Diaphragm Signup and view all the answers

Which part of the rib articulates with the vertebral bodies?

Head of the rib Signup and view all the answers

At what level does the xiphisternal joint lie?

Opposite the body of the ninth thoracic vertebra Signup and view all the answers

What is the primary component of normal respiration?

External intercostal muscle Signup and view all the answers

Which muscle forms the lateral part of the innermost layer of the thoracic wall?

Innermost intercostal muscle Signup and view all the answers

Which nerve is joined to the brachial plexus?

First intercostal nerve (T1) Signup and view all the answers

Which nerve receives a gray ramus from the corresponding ganglion of the sympathetic trunk?

First intercostal nerve (T1) Signup and view all the answers

What type of branch does the intercostal nerve give to a ganglion of the sympathetic trunk?

White ramus communicants Signup and view all the answers

Study Notes

Common Carotid Artery

Terminates at the level of the fourth cervical vertebra (C4).
Travels with the internal jugular vein and vagus nerve within the carotid sheath.

External Carotid Artery

The superior thyroid artery arises from the anterior aspect of the external carotid artery.
Terminates by bifurcating into the maxillary and superficial temporal arteries.

Common Carotid Artery Origins

Left common carotid artery originates from the arch of the aorta.
Right common carotid artery arises from the brachiocephalic trunk.

Glossopharyngeal Nerve

Originates in the medulla oblongata of the brain.
Leaves the cranium through the jugular foramen.

Arteries and Veins

The basilar artery is formed by the union of the two vertebral arteries.
The artery that supplies the inferior surface of the cerebellum is the posterior inferior cerebellar artery.
Subclavian vein is drained by the external jugular vein.

Veins

The posterior auricular vein and the retromandibular vein combine to form the external jugular vein.

Thoracic Anatomy

The sternal angle (Angle of Louis) lies at the level of the second rib.
Rib 10 articulates only with the T10 vertebra and has one articular facet.
The primary muscle of the thoracic wall is the pectoralis major.
The part of the rib that articulates with the vertebral bodies is the head of the rib.
The xiphisternal joint lies at the level of the ninth thoracic vertebra (T9).
The primary component of normal respiration is the diaphragm.

Intercostal Nerve

The lateral part of the innermost layer of the thoracic wall is formed by the internal intercostal muscle.
Intercostal nerve receives a gray ramus from the corresponding ganglion of the sympathetic trunk.
Intercostal nerve gives a white ramus communicantes to the sympathetic trunk's ganglion.

Brachial Plexus

The nerve that is joined to the brachial plexus is the long thoracic nerve.

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Test your knowledge on the origin, course, and termination of the common carotid artery in the neurovasculature of the head and neck.

Neurovasculature of Head &amp; Neck: Common Carotid Artery