Anterior Veins of neck (Anterior to Sternocleidomastoid)
1.Ext Jugular V. (Angle of mandible to subclavian V)
2.Communticating V (connects Ext Jugular to Ant Jugular vein).
3.Anterior Jugular V (anterior midline of neck, moves laterally at clavicle deep to SCM to empty into Ext Jugular V).
Retropharyngeal space
Located between the posterior Pretracheal fascia and the anterior Prevertebral fascia. Buccopharyngeal fascia is found here. Allows movement of visceral comp. on top of vertebral comp. **Allows spread of infection to superior mediastinum.
Carotid Sinus
Dilation of proximal part of internal carotid A. Innervated by CN IX and CN X. **Important Barroreceptor for BP regulation.
Contents of Occipital triangle
1.Spinal accessory n.
2.Erb's point (cervical plexus).
3.Trunks of brachial plexus.
4.Transverse cervical A (off the 3rd/lateral part of subclavian).
Carotid Body
Ovoid mass locatde deep to bifrication of Common Carotid A. Innervated by CN IX and X. **Important Chemoreceptor for BL pH (Increase or decrease respiration to avoid acidosis or alkanosis).
Does the internal Carotid Artery branch in the neck?
NO! C'mon man
Branches from 1st part (medial) of Subclavian A.
1.Vertebral A.
2.Thyrocervical Trunk.
3.Internal Thoracic A.
Posterior cervical region
Contains Trapezius m., cutaneous branches of posterior rami, suboccipital triangle (Deep)
Parts of the Subclavian A.
1st: medial to Ant. scalene.
2nd: posterior to Ant.scalene. (Costocervical Trunk branches off)
3rd: lateral to Ant. Scalene
Infrahyoid muscles
inferior to hyoid, involved in swallowing via depression of the hyoid bone.
