What are the content of posterior triangle of neck?
The posterior triangle contains level 5 lymph node chains. These include spinal accessory and transverse cervical nodes. Depending on the location of the nodes above or below the accessory nerve, they are sub grouped as level 5a (above) or level 5b (below).
What are the contents of the occipital triangle?
Contents
- spinal accessory nerve.
- cutaneous and muscular branches of the cervical plexus.
- upper most part of brachial plexus.
- supraclavicular nerve.
- transverse cervical vessels.
What is found in the posterior triangle?
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. The posterior neck triangle is covered superficially to deep by the skin, superficial and deep cervical fascia, and the platysma muscle.
Why are triangles of the neck important?
The triangles of the neck are important because of their contents, as they house all the neck structures, including glands, nerves, vessels and lymph nodes.
What is a Digastric 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 nerve is in the occipital triangle?
The roof of this triangle is formed by the cutaneous nerves of cervical plexus and the external jugular vein and platysma muscle….
| Occipital triangle | |
|---|---|
| Side of neck, showing chief surface markings. (Nerves are yellow, arteries are red.) | |
| Details | |
| Identifiers | |
| Latin | trigonum occipitale |
What is muscular triangle?
The inferior carotid triangle (or muscular triangle), is bounded, in front, by the median line of the neck from the hyoid bone to the sternum; behind, by the anterior margin of the sternocleidomastoid; above, by the superior belly of the omohyoid. Muscular triangle.
What nerve passes through the posterior triangle?
The suprascapular nerve originates from the upper trunk of the brachial plexus (C4–C6), crosses the posterior triangle of the neck, and passes deep to the trapezius muscle.
Which nerve runs across the posterior triangle and what does it supply?
The accessory nerve (CN XI) exits the cranial cavity, descends down the neck, innervates sternocleidomastoid and enters the posterior triangle. It crosses the posterior triangle in an oblique, inferoposterior direction, within the investing layer of fascia.
Why is the triangle of the neck important?
Where is the posterior triangle?
Divisions. The posterior triangle is crossed, about 2.5 cm above the clavicle, by the inferior belly of the omohyoid muscle, which divides the space into two triangles: an upper or occipital triangle. a lower or subclavian triangle (or supraclavicular triangle)
Which neck triangle is thyroid gland in?
Muscular triangle
Muscular triangle The anterior cervical, infrahyoid, prelaryngeal, thyroid, pretracheal, paratracheal lymph nodes can also be found in this triangle. Its medial part includes the esophagus, trachea, thyroid gland, and the lower part of the larynx.
Why is gastric triangle important?
The importance of the triangle is because it has been known as the source of originating most of the gastrinomas. The appellation is due to Edward Peter Passaro, an American surgeon, who explained it for the first time.
What does the greater occipital nerve affect?
The greater occipital nerve arises from between the first and second cervical vertebrae, along with the lesser occipital nerve. It supplies sensation to the skin along the back of the scalp to the top of the head.
How many muscular triangles are there?
The three paired triangles are the submandibular (digastric), carotid, and muscular triangles. The unpaired triangle is the submental triangle.
¿Cuáles son los triángulos del cuello?
TRIÁNGULOS DEL CUELLO. 1. – TRIÁNGULO OCCIPITAL ó “TRIÁNGULO CERVICALPOSTERIOR”. LÍMITES: CONTENIDO: -VÉRTICE: Unión del músculo esternocleidomastoideo y m. trapecio en la línea nucal superior. -BASE:Tercio medio de la clavícula. -TECHO: Capa superficial de fascia cervical profunda. Dividido a 2,5 cm. Por arriba de la clavícula por el
¿Cuáles son los músculos del cuello?
Músculo digástrico del cuello Incisura mastoidea del hueso temporal. Fosadigástrica de la mandíbula. – Vientre anterior: Nervio milohioideo (nervio mandibular). – Vientre posterior: Raíz digástrica (nervio facial)
¿Cuáles son las partes del cuello?
-INTERNO:Línea media del cuello. -LATEROSUPERIOR:Vientre superior del m. omohioideo. -LATEROINFERIOR:Borde anterior del m. esternocleidomastoideo. -TECHO: Piel. Fascia superficial. M. platisma. Fascia profunda. -M. Esternohioideo. -M. esternocleidomastoideo. -PVN del cuello: Arteria carótida común (y su
¿Qué es el esplenio del cuello?
ESPLENIO Y ELEVADOR DE LA ESCÁPULA. M. esplenio del cuello – Apófisis espinosas de las vértebras cervicales C3-C6.