What Are The Bordering Landmarks Of The Anterior Triangle Of The Neck Mark All That Apply?

What are the bordering landmarks of the anterior triangle of the neck? (Mark all that apply.) Explanation:

The anterior triangle is bordered by the mandible above, the sternomastoid laterally, and the midline of the neck medially.

What muscle the main border of the triangles of the neck?

What are the boundaries of the anterior and posterior triangles of the neck?

Its boundaries are as follows:

Anterior – posterior border of the sternocleidomastoid. Posterior – anterior border of the trapezius muscle

. Inferior – middle 1/3 of the clavicle.

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

These borders include the

trapezius muscle

posteriorly, the sternocleidomastoid muscle anteriorly, and the middle one-third of the clavicle inferiorly. The union of the sternocleidomastoid and trapezius muscles at their insertion on the superior nuchal line of the occipital bone form the apex of the triangle.

What are the bordering landmarks of the anterior triangle of the neck?

Laterally, the anterior triangle is bounded by the

anterior border of the sternocleidomastoid muscle

. Its superior border is the inferior border of the mandible. Medially, the boundary is the midline of the neck. The anterior triangle can further subdivide into four sub-triangles.

What triangles of the neck is the most important?

Lesser’s triangle

This triangle has also been called the lingual triangle [6]. The most important structure in it is the lingual artery [6,7]. The floor of Lesser’s triangle is the hyoglossus muscle, and the lingual artery is found beneath it.

What are the 2 main triangles of the neck?

The neck is divided into two large triangles (

anterior and posterior cervical triangles

) by the sternocleidomastoid muscle. It arises from two heads (sternal and clavicular) inferiorly and takes an oblique course superiorly to insert into the mastoid process and lateral aspect of the superior nuchal line.

Why is the neck divided into triangles?

The use of the divisions described as the triangles of the neck

permit the effective communication of the location of palpable masses located in the neck between healthcare professionals

. The common swellings anterior of the midline are: Enlarged submental lymph nodes and sublingual dermoid in the submental region.

What are the boundaries of the triangles of the neck?

• Superior – posterior belly of the digastric muscle.
• Lateral – medial border of the sternocleidomastoid muscle.
• Inferior – superior belly of the omohyoid muscle.

What is the supraclavicular triangle?

The supraclavicular triangle is

one of the paired triangles in the posterior triangle of the neck

. The triangles of the neck are surgically focused, first described from early dissection-based anatomical studies which predated cross-sectional anatomical description based on imaging (see deep spaces of the neck).

What is the muscle that is a primary rotator of the head and divides the anterior and posterior triangles of the neck?

What nerves are in posterior triangle of neck?

• Spinal accessory nerve (cranial nerve XI)
• Roots of the brachial plexus.
• Suprascapular nerve.
• Cutaneous branches of the cervical plexus: Lesser occipital nerve. Great auricular nerve. Transverse cervical nerve. Supraclavicular nerve.
• Phrenic nerve.

What is the back of the neck called?

The cervical spine

– the neck and upper back, composed of the seven vertebrae closest to the skull. The cervical spine supports the weight and movement of your head and protects the nerves exiting your brain.

What three structures form the boundaries of the posterior triangle of the neck?

• Apex: Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone.
• Anteriorly: Posterior border of the sternocleidomastoideus.
• Posteriorly: Anterior border of the trapezius.
• Inferiorly: Middle one third of the clavicle.

Which artery goes under the clavicle?

Beyond the first rib where it passes underneath the clavicle, the subclavian artery becomes the

axillary artery

and passes underneath the pectoralis minor muscle.

Which gland is anterior to neck?