Head & Neck 3 Flashcards
what are the 2 divisions of the neck?
The sternocleidomastoid muscle divides each side of the neck
anterior triangle and posterior triangle
what are the boundaries of the anterior triangle
- Anterior border of the sternocleidomastoid muscle
- Midline of the neck
Mandible –> suprasternal notch - Inferior border of mandible
Mandible –> mastoid process (TB)
what is the anterior triangle split into? (sub triangles) which is unpaired
- Submental triangle* - unpaired
- Submandibular triangle
- Carotid triangle
- Muscular triangle
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label the borders of the anterior triangle of the neck
label the differnet sub triangles of the anterior triangle of the neck
submental triangle borders?
- Anterior belly of right digastric m.
- Anterior belly of left digastric m.
- Hyoid bone
contents of submental triangle
submandibular triangle boundaries
Borders of the submandibular triangle:
* Inferior border of mandible
* Anterior belly of digastric m.
* Posterior belly of digastric m
Contents of submandibular triangle and label
boundaries of the carotid triangle
Borders of the carotid triangle:
* Anterior border of sternocleidomastoid m.
* Posterior belly of digastric m.
* Superior belly of omohyoid m.
what are the contents of the carotid triangle? label
borders of the muscular triangle
Borders of the muscular triangle:
* Anterior border of sternocleidomastoid m.
* Superior belly of omohyoid m.
* Midline of neck
Floor of muscular triangle4
- Sternohyoid m.
- Sternothyroid m.
contents of the muscular triangle
what structures are in the muscular triangle?
strap muscles
thyroid gland
parathyroid glands
label the anterior triangle of the neck
borders of posterior triangle of the neck
Borders of the posterior triangle:
* Posterior border of the sternocleidomastoid muscle
* Middle third of clavicle
* Anterior border of trapezius muscle
what are the 2 divisions of the posterior triangle? and what divides it?
- Omohyoid muscle
Divides the posterior triangle into 2 sub-triangles:
* Omoclavicular triangle (AKA supraclavicular triangle)
* Occipital triangle
label the borders of the posterior triangle of the neck
Borders of the posterior triangle:
* Posterior border of the
sternocleidomastoid muscle
* Middle third of clavicle
* Anterior border of trapezius
what forms the roof of the posterior triangle?
Roof of the posterior triangle:
* Skin
* Superficial fascia with platysma
* Superficial fascia (investing) layer of deep cervical fascia
what makes the floor of the posterior triangle
Floor of the posterior triangle:
* Scalene muscles (anterior, middle, posterior)
* Levator scapulae m.
* Splenius capitis m.
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Borders of the omoclavicular triangle:
- Inferior belly of omohyoid m.
- Posterior border of sternocleidomastoid m.
- Middle third of clavicle
Contents of omoclavicular triangle
Borders of the occipital triangle:
- Anterior border of trapezius m.
- Posterior border of sternocleidomastoid m.
- Inferior belly of omohyoid m.
