UPPER CARDIAC XERVE. 



691 



nerve; and, rather lower down, by one or more filaments from the trunk of the 

 pneumo-gastric nerve ; lastly, on entering the chest, it joins with the recurrent 

 laryngeal. 



Fig. 453. 



Fig. 453. CONNECTIONS OF THE CERVICAL AND UPPER DORSAL SYMPATHETIC GANGLIA 

 AND NERVES ON THE LEFT SIDE. 



The full description of this figure will be found at p. 620. The following numbers 

 refer to the sympathetic ganglia and nerves, and those immediately connected with 

 them : 3, pharyngeal plexus ; 8, laryngeal plexus ; 13, pulmonary plexus ; and to 

 the reader's left, above the pulmonary artery, a part of the cardiac plexus ; 24, superior 

 cervical ganglion of the sympathetic ; 25, middle cervical ganglion ; 26, inferior cervical 

 ganglion united with the first dorsal ganglion ; 27, 28, 29, 30, second, third, fourth, and 

 fifth dorsal ganglia. 



Variety. Instead of passing to the thorax in the manner described, the superior 

 cardiac nerve may join the cardiac branch furnished from one of the other cer- 

 vical ganglia. Scarpa describes this as the common disposition of the nerve ; 

 but Cruveilhier (Anat. Descript., t. iv.) states that he has not in any case 

 found the cardiac nerves to correspond exactly ^ith the figures of the " Tabula* 

 Xeurologicae." 



