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Flashcards in Deep Neck Deck (18):
1

Venous System of the Upper Thorax

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2

What joins systemic venous circulation at Venous Angle?

  • Right lymphatic duct at right venous angle
  • Thoracic lymphatic duct at left venous angle

3

Branches of External Carotid Artery

  1. Superior Thoracic Artery
  2. Lingual Artery
  3. Facial Artery
  4. Ascending pharyngeal
  5. Posterior Auricular
  6. Occipital
  7. Superior temporal
  8. Maxillary 

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4

Tissues at Carotid Bifurcation

  1. Carotid Body - O2 Chemoreceptor 
  2. Carotid Sinus - Baroreceptor for changes in arterial pressure 
  • Innervated by Glossopharyngeal nerve (CN IX) via visceral sensory fibers

5

Divisions of Subclavian Artery (and to what structure)

  1. Medial part
  2. Posterior part
  3. Lateral part

relative to anterior scalene

6

Branches from parts of Subclavian Artery 

  1. Medial Part
    1.  Vertebral Artery
    2. Internal Thoracic Artery
    3. Thyrocervical Trunk
      1. Inferior Thrydoid artery
      2. Ascending Cervical artery
      3. Transverse Cervical artery
      4. Suprascapular artery
  2. Posterior part
    1. Costocervical trunk
  3. Lateral Part
    1. Dorsal scapular artery 

7

Scalene Muscles 

  1. Anterior Scalene
  2. Middle Scalene
  3. Posterior Scalene 

 

  • innervated by brachial plexus 

8

Scalene Muscle Anatomical Relationships

  1. Brachial Plexus and Subclavian artery pass between middle and anterior scalenes
  2. Subclavian vein is anterior to the anterior scalene
  3. Phrenic nerve is anterior to the anterior scalene

9

Thyroid Gland

  • makes T3, T4, Calcitonin 
  • 2 lobes join at isthmus
  • Pyramidal lobe superiorly 
  •   ○ Blood Supply
                Superior Thyroid  - 1st branch of    external carotid
                Inferior Thyroid - branch of thyrocervical trunk 

10

Thyroid Gland Drainage

  1. Superior Thyroid Vein - Drain to IJV
  2. MIddle Thyroid Vein - drian to IJV
  3. Inferior Thyroid vein - drain to brachiocephalic vein 

11

Parathyroid Glands

  • develop from 3rd & 4th pharyngeal pouches 
  • secrete Parathyroid hormone
  • vascularized by superior & inferior thyroid arteries  

12

Nerves of Deep Neck

  1. Phrenic Nerve
  2. Vagus Nerve (CN X)
  3. Phrenic Nerve
    1. behind carotid sheath

13

Vagus Nerve Branches 

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14

Three main cervical Ganglia of Sympathetic Trunk

  1. Superior
  2. Middle
  3. Inferior 
  • most preganglionics synpase at superior ganglion 
  • follow major blood vessles down as carotid plexus 

15

Suboccipital Triangle Contents 

  1. Vertebral artery 
  2. Suboccipital Nerve

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16

Boundaries of Suboccipital Triangle, role, and innervation

  1. Rectus Capitis Posterior Major/Minor
  2. Obliquus capitis superior
  3. Obliquus capitis inferior 
  • Primarily postural/proprioception 
  • innervated by suboccipital nerve

17

Nerves associated with suboccipital triangle 

  1. Suboccipital nerve
    1. Dorsal ramus of CN 1
  2. Greater occipital nerve
    1. Dorsal ramus of CN 2
    2. Cutaneous innervation to posterior head
  3. least occipital nerve
    1. Dorsal ramus of CN 3
    2. Cutaneous to posterior head & neck

18

Sensory innervation of head and neck - Sources

  • Sensroy branches of cervical plexus (ventral rami C2-C4) - cutaneous innervation to anterior & lateral neck
  • Dorsal rami of cervical nerves (greater & lesser occipital) - cutaneous to posterior neck/scalp