Contents
What are the contents of posterior triangle?
The subdivisions of the posterior triangle are occupied by the regional lymph nodes, the third part of the subclavian artery, suprascapular and transverse cervical branches of the thyrocervical trunk, external jugular vein, trunks of the brachial plexus and the fibers of the cervical plexus.
What is the significance of the suboccipital triangle?
Clinical Significance The suboccipital triangle forms a distinct area where surgeons can be aware of the vertebral artery and position within the posterior cervical region. The close relationship between the suboccipital muscles and the vertebral artery may be relevant in patients with significant atherosclerosis.
Which of the following structures is found in the suboccipital triangle?
The suboccipital triangle is an area bordered by three of the suboccipital muscles. It contains the vertebral artery (can be identified during surgery), suboccipital venous plexus and suboccipital nerve. Its borders are as follows: Superomedial: Rectus capitus posterior major.
How many triangles of the neck are there?
This space is subdivided into two large triangles by sternocleidomastoid, which passes obliquely across the neck, from the sternum and clavicle below, to the mastoid process and occipital bone above….
| Triangles of the neck | |
|---|---|
| Latin | Trigonum cervicale Trigonum colli Regio cervicalis |
| Anatomical terminology |
What muscles are in the posterior cervical triangle?
The borders of the posterior triangle of the neck are formed by the trapezius muscle posteriorly, the sternocleidomastoid muscle anteriorly, and the omohyoid muscle inferiorly. The roof is formed by fascia, and the floor is formed by the splenius capitus, levator scapulae, and scalene muscles.
What muscles are in the suboccipital triangle?
The suboccipital triangle is a region of the neck bounded by the following three muscles of the suboccipital group of muscles:
- Rectus capitis posterior major – above and medially.
- Obliquus capitis superior – above and laterally.
- Obliquus capitis inferior – below and laterally.
What is the floor of the occipital triangle?
The occipital triangle, the larger division of the posterior triangle, is bounded, in front, by the Sternocleidomastoideus; behind, by the Trapezius; below, by the Omohyoideus . Its floor is formed from above downward by the Splenius capitis, Levator scapulæ, and the Scalenus medius and posterior. It is covered by…
What are the components of the suboccipital triangle?
The suboccipital triangle contains the vertebral artery, suboccipital nerve (C1), and suboccipital venous plexus.
Which is the least occipital nerve in the triangle?
Least occipital Nerve- C3 dorsal ramus, inferior medial part of the back of the skull. The suboccipital nerve from dorsal ramus of C1 is the motor innervation of the suboccipital triangle. It passes through the triangle. The greater occipital nerve of dorsal ramus of C2 comes from under the obliquus capitis under and goes superiorly.
What causes pain near the suboccipital triangle?
This could be from tight muscles, impinging arteries, posterior head trauma, whiplash, or other head and neck injuries. The occipital nerves course near the suboccipital triangle and hence can cause pain in that area.