Explore the Fascinating Compartments of the Neck

Spinal accessory nerve (CN11) and cervical plexus.

Motor innervation to the trapezius and sternocleidomastoid muscles.

Scalene muscles (posterior, middle, and anterior).

<p>Brachial plexus.</p> Signup and view all the answers

<p>Draining blood from various regions of the head and neck.</p> Signup and view all the answers

<p>Internal jugular vein.</p> Signup and view all the answers

<p>Superior vena cava.</p> Signup and view all the answers

<p>Suprahyoid muscles and infrahyoid muscles.</p> Signup and view all the answers

<p>Elevate the hyoid bone.</p> Signup and view all the answers

<p>Depress the hyoid bone.</p> Signup and view all the answers

<p>The four compartments of the neck are vertebral, musculofascial, carotid, and visceral.</p> Signup and view all the answers

<p>The vertebral compartment is surrounded by prevertebral fascia.</p> Signup and view all the answers

<p>The carotid compartment is enclosed by the carotid sheath.</p> Signup and view all the answers

<p>The musculofascial compartment is encircled by deep cervical fascia.</p> Signup and view all the answers

<p>The visceral compartment is primarily visible from the anterior aspect.</p> Signup and view all the answers

<p>The compartments and their associated fascia separate structures from one another by creating physical barriers.</p> Signup and view all the answers

<p>The separation of compartments by fascia can limit the spread of infections by requiring them to traverse multiple layers of fascia to enter another compartment.</p> Signup and view all the answers

<p>There are two clinically relevant triangles in the neck.</p> Signup and view all the answers

<p>The boundaries of the posterior triangle of the neck are the trapezius muscle and the sternocleidomastoid muscle.</p> Signup and view all the answers

<p>The anterior triangle of the neck is more clinically significant than the posterior triangle.</p> Signup and view all the answers

<p>The infrahyoid muscles are a group of muscles located below the hyoid bone. They are called infrahyoid because of their position below the hyoid bone.</p> Signup and view all the answers

<p>The thyrohyoid muscle runs from the thyroid cartilage to the hyoid bone.</p> Signup and view all the answers

<p>The omohyoid muscle consists of a superior and inferior belly, separated by a tendon. It extends from the curvature of the hyoid bone to the back of the scapula (subscapular fossa).</p> Signup and view all the answers

<p>The sternothyroid muscle originates from the upper posterior surface of the sternum and stops at the thyroid cartilage, not reaching the hyoid bone.</p> Signup and view all the answers

<p>The thyrohyoid and sternothyroid muscles both attach to the thyroid cartilage, essentially connecting them.</p> Signup and view all the answers

<p>The infrahyoid muscles are innervated by cervical spinal nerves from C1 to C3, as well as fibers from the Ansa Cervicalis.</p> Signup and view all the answers

<p>The suprahyoid muscles play a role in elevating the hyoid bone and are involved in activities such as swallowing and vocalization.</p> Signup and view all the answers

<p>The mylohyoid muscle runs from the mandible to the hyoid bone. It is innervated by CN5 V3.</p> Signup and view all the answers

<p>The geniohyoid muscle extends from the hyoid bone to the posterior aspect of the mandibular symphysis.</p> Signup and view all the answers

<p>The stylohyoid muscle is innervated by CN7.</p> Signup and view all the answers