Triangles of the Neck Flashcards
describe the neck fascia
- superficial fascia
- loose, fatty subcutaneous layer (contains the platysma muscle, innervated by CN VII)
- deep fascia
- investing layer
- pretracheal layer
- prevertebral layer
name the boundaries and the floor of the post. triangle
name the cutaneous branches of cervical plexus emerging from posterior triangle
name the structures contents of the carotid sheath
name the structures emerging through the scalene gap between ant. and middle scalene
name the subdivisions of the anterior triangle
what 2 muscles subdivide them?
the cervical plexus is formed by ___ to ____
name the motor vs cutaneous branches of the cervical plexus
describe the ansa cervicalis
- formed by ventral rami of C1-3
- C1 fibers also travel along hypoglossal n. to geniohyoid and thyrohyoid muscle
- all other infrohyoid muscles are innervated by ansa cervicalis
name the branches of the common carotid artery
what 2 veins make up the retromandibular vein?
superifical temporal vein + maxillary vein
name the suprahyoid muscles of the anterior triangle
- stlohyoid: CN VII
- digastric
- post: CN VII
- ant: CN V3
- mylohyoid: CN V3
- geniohyoid: C1
name the infrahyoid muscles
- omohyoid: ansa cervicalis
- sternohyoid: ansa cervicalis
- thryohyoid: C1
- sternothyroid: ansa cervicalis
describe the external jugular vein
- forms near the angle of the mandible from:
- posterior branch of the retromandibular vein
- posterior auricular vein
- drains into the subclavian
the lesser occipital nerve provides cutaneous sensation for…
- skin of the neck
- skin of the scalp posterior to the ear
the great auricular nerve provides cutaneous sensation for…
- skin of the parotid region
- the ear
- mastoid area
