What are the contents of carotid triangle?
The carotid triangle includes the common carotid artery and its bifurcation into the external carotid artery (ECA) and internal carotid artery (ICA). It usually contains the superior thyroid, lingual, facial, occipital, and ascending pharyngeal arteries.
What makes up the submandibular triangle?
The submandibular triangle, also known as the digastric triangle, is bounded anteriorly by the anterior belly of the digastric muscle, posteriorly by the posterior belly of the digastric muscle, superiorly by the mandible, and inferiorly by the mylohyoid and hypoglossus muscles.
What are the contents 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.
How many parts does the digastric triangle have?
At the most basic division, the neck is divided into the anterior and posterior triangles, which are separated by the sternocleidomastoid muscle. Focusing specifically on the anterior triangle, it can be divided into four smaller triangles, which are the: carotid triangle. submental triangle.
What are the borders and the contents of each triangle?
This triangle, like the submandibular triangle, is floored by the mylohyoid muscles and roofed by the platysma, fascia and skin….Submental triangle.
| Borders | Inferior – hyoid bone Lateral – anterior belly of digastric muscle Medial – midline of neck |
|---|---|
| Contents | Anterior jugular vein, submental lymph nodes |
Is vagus nerve in carotid triangle?
Clinical significance. As mentioned above, the carotid triangle holds great importance for structures running through the neck. Some of these important structures are more superficial than others; carotid arteries, jugular veins, and vagus and hypoglossal nerves.
What structures are found in the Omoclavicular triangle?
Contents of the omoclavicular/subclavian triangle are as follows:
- the subclavian artery.
- the inferior part of the external jugular vein,
- the investing layer of deep cervical fascia.
- the trunks of the brachial plexus.
What are the boundaries of the triangles 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 are the borders of the triangle of auscultation?
It is bordered on three sides – inferiorly by the latissimus dorsi muscle, superiorly by the inferior border of the trapezius, and laterally by the medial border of the scapula formed by the teres major muscle and infraspinatus muscle.
What nerve is in the carotid triangle?
It is formed by the middle cervical fascia where it encompasses the vagus nerve (CN X) as well as the internal jugular vein, the common carotid artery, and deep cervical lymph nodes.
What is in the supraclavicular triangle?
The subclavian triangle (or supraclavicular triangle, omoclavicular triangle, Ho’s triangle), the smaller division of the posterior triangle, is bounded, above, by the inferior belly of the omohyoideus; below, by the clavicle; its base is formed by the posterior border of the sternocleidomastoideus.
What is lumbar triangle?
The borders of Petit’s triangle, also known as the inferior lumbar triangle, is bounded by the latissimus dorsi posteriorly, the external oblique anteriorly, and the iliac crest inferiorly, which is the base of the triangle. The floor of the triangle is the internal oblique muscle.
What are the contents of axilla?
The axilla is an anatomical region under the shoulder joint where the arm connects to the shoulder. It contains a variety of neurovascular structures, including the axillary artery, axillary vein, brachial plexus, and lymph nodes.
What is contained in the anterior triangle of the neck?
The contents of the anterior triangle include muscles, nerves, arteries, veins and lymph nodes. The muscles in this part of the neck are divided as to where they lie in relation to the hyoid bone. The suprahyoid muscles are located superiorly to the hyoid bone, and infrahyoids inferiorly.
What are the borders of Hesselbach’s triangle?
The superolateral border of the Hesselbach triangle is the inferior epigastric vessels. The inguinal ligament constitutes the inferolateral side. The lateral edge of the rectus sheath is the medial side.
What is the triangle of auscultation?
The triangle of auscultation is a relative thinning of the musculature of the back, situated along the medial border of the scapula which allows for improved listening to the lungs.