POSTERIOR TRIANGLE OF NECK
The nerve innervating the four muscles in the suboccipital triangle emerges from or between which of the following
| A |
A foramen in the occipital bone |
|
| B |
Between the occipital bone and the atlas (CI) |
|
| C |
Between the atlas (CI) and axis (CII) |
|
| D |
Between the axis (CII) and CIII |
The nerve innervating the four muscles in the suboccipital triangle emerges from or between which of the following
| A |
A foramen in the occipital bone |
|
| B |
Between the occipital bone and the atlas (CI) |
|
| C |
Between the atlas (CI) and axis (CII) |
|
| D |
Between the axis (CII) and CIII |
A specific cervical spinal nerves pass superior to its corresponding vertebra hence, C-i, which innervates the sub-occipital muscles will be seen passing over atlas vertebra and below the occipital bone.
Which of the following hyoid muscles is an important landmark in both the anterior and posterior triangles of the neck?
| A |
Geniohyoid |
|
| B |
Mylohyoid |
|
| C |
Omohyoid |
|
| D |
Sternohyoid |
Which of the following hyoid muscles is an important landmark in both the anterior and posterior triangles of the neck?
| A |
Geniohyoid |
|
| B |
Mylohyoid |
|
| C |
Omohyoid |
|
| D |
Sternohyoid |
Contents of the suboccipital triangle are formed by all of the following structures, EXCEPT?
| A |
Vertebral artery |
|
| B |
Suboccipital nerve |
|
| C |
Greater occipital nerve |
|
| D |
Lesser occipital nerve |
Contents of the suboccipital triangle are formed by all of the following structures, EXCEPT?
| A |
Vertebral artery |
|
| B |
Suboccipital nerve |
|
| C |
Greater occipital nerve |
|
| D |
Lesser occipital nerve |
The contents of the suboccipital triangle are vertebral artery, suboccipital nerve and greater occipital nerve.
- Obliquus capitis superior muscle
- Obliquus capitis inferior muscle
- Rectus capitis posterior major muscle
- Rectus capitis posterior minor muscle
All of the following muscles forms the boundary of the suboccipital triangle found in the suboccipital region of the neck, EXCEPT?
| A |
Obliquus capitis superior muscle |
|
| B |
Obliquus capitis inferior muscle |
|
| C |
Rectus capitis posterior major muscle |
|
| D |
Rectus capitis posterior minor muscle |
All of the following muscles forms the boundary of the suboccipital triangle found in the suboccipital region of the neck, EXCEPT?
| A |
Obliquus capitis superior muscle |
|
| B |
Obliquus capitis inferior muscle |
|
| C |
Rectus capitis posterior major muscle |
|
| D |
Rectus capitis posterior minor muscle |
The suboccipital triangle is bounded by rectus capitis posterior major and the obliquus capitis superior and inferior muscles. The floor of this triangle is formed by the posterior occipitoatlantal membrane and the posterior arch of the C1 vertebrae.
- Vertebral artery
- Suboccipital nerve
- Greater occipital nerve
If there is a superficial cut in the region of middle part of posterior triangle of neck, patient will experience problem
| A |
Adduction of arm |
|
| B |
Pronating scapula |
|
| C |
Shrugging of shoulder |
|
| D |
Abduction of arm |
If there is a superficial cut in the region of middle part of posterior triangle of neck, patient will experience problem
| A |
Adduction of arm |
|
| B |
Pronating scapula |
|
| C |
Shrugging of shoulder |
|
| D |
Abduction of arm |
- Roof of posterior triangle is formed by the investing layer of deep cervical fascia.
- Accessory nerve lies just deep to the investing layer at the middle of the posterior border of sternocleidomastoid muscle and across the posterior triangle and reaches the anterior border of trapezius, which it supplies.
- Shrugging of shoulder is an action of trapezius.
All of the following are contents of the posterior triangle of the neck except:
| A |
Spinal part of accesory nerve |
|
| B |
Trunks of brachial plexus |
|
| C |
Internal jugular vein |
|
| D |
Transverse cervical artery |
All of the following are contents of the posterior triangle of the neck except:
| A |
Spinal part of accesory nerve |
|
| B |
Trunks of brachial plexus |
|
| C |
Internal jugular vein |
|
| D |
Transverse cervical artery |
The posterior triangle is bounded posteriorly by the trapezius muscle, anteriorly by the sternocleidomastoid muscle, and inferiorly by the clavicle.
The posterior cervical triangle is subdivided into the following triangles by the inferior belly of the omohyoid muscle:
Occipital triangle, whose contents are:
- Nerve to rhombideus
- Cutaneous branches of cervical plexus of nerves
- Spinal accessory nerve
- Upper part of brachial plexus
- Transverse cervical artery and vein
- Cervical lymph nodes
- Occipital artery
- Supraclavicular nodes
Subclavian triangle (also known as omoclavicular), whose contents are:
- Third part of subclavian artery
- Part of subclavian vein
- Suprascapular artery and vein
- Supraclavicular lymph nodes
- Three trunks of brachial plexus
- Nerve to serratus anterior
- Nerve to subclavius
- Suprascapular nerve
- Lower part of external jugular vein
- Transverse cervical artery and vein
All are contents of occipital triangle except ‑
| A |
Great auricular nerve |
|
| B |
Suprascapular nerve |
|
| C |
Lesser occipital nerve |
|
| D |
Occipital artery |
All are contents of occipital triangle except ‑
| A |
Great auricular nerve |
|
| B |
Suprascapular nerve |
|
| C |
Lesser occipital nerve |
|
| D |
Occipital artery |
Ans. is ‘b’ i.e., Suprascapular nerve
