THE NECK, ANTERIOR. 75 



through the parotid gland (as already dissected), and then 

 courses forward below the lower jaw to form under the 

 platysma a loose plexus with the superficial cervical nerve. 



Diag. 6. DIAGRAM OF THE CERVICAL PLEXUS. (/. S. H.)I, First cervical 

 nerve. //, Second cervical nerve. ///, Third cervical nerve. IV, Fourth cervical 

 nerve. V. Fifth cervical nerve, i, Branch to rectus capitis lateralis. 2, Branch to 

 rectus capitis anticus minor. 3, Lesser occipital. 4, Great auricular. 5, Superficial 

 cervical. 6, Descendens hypoglossi. 7, Communicans hypoglossi. 8, Phrenic. 9, 

 To scalenus medius. 10, To levator anguli scapulae. 11, To trapezius. 12, Acromial, 

 13, Clavicular, and 14, Sternal, cutaneous branches. 15, Cord joining first and second 

 nerves. 16, Cord joining second and third nerves. 17, Cord joining third and fourth 

 nerves. 18, To scalenus medius. 19, To levator anguli scapulae. 20, Hypoglossal. 

 21, Branch to thyrohyoid. 22, To anterior belly of the omohyoid. 23, To sterno- 

 hyoid. 24, To sternothyroid. 25, To posterior belly of the omohyoid. 26, and 27, 

 The branches from the loop connecting the first and second cervical nerves which 

 unite to form a cord that joins the hypoglossal nerve, being contained within its 

 sheath, but leaves it again as the descendens hypoglossi. 



The auricularis magnus, the small occipital, and the 

 superficial cervical nerves are found at the posterior border 



