240 



ARTERIAL SYSTEM. 



VERTEBRAL. - 

 (Plate i.) 



THE ARTERIAL SYSTEM. -Continued. 



- r , . _ . . f Br. to spinal cord and membranes. 

 L.ateral Spinal \ _ . . . 



i Br. to bodies of Vertebrae posteriorly. 



Muscular Branches, to deep cervical muscles. 



Post. Meningeal, ramify between dura mater and skull. 



A terior St ' I |J oins its fellow to form Ant - Median Artery of tht 



' t spinal cord. 

 Posterior Spinal, to spinal cord and membranes, laterally. 



Inferior Cerebellar { ^^ f } to "" be ". u / *"* , ch r id pleXUS 

 l External ) of the 4th Ventricle. 



to that canal. 

 t. (Inferior) Cerebellar. 

 BASILAR. \ Superior Cerebellar, to pia mater, pineal gland, etc. 



{Post. Choroid, to choroid plexus. 

 Branches, to posterior lobes of 

 cerebrum, anas, with Ant. and 

 Mid. Cerebral Arteries. 



6. 



THYROID 



Axis. 

 (Plate i.) 



Inferior Thyroid. . 



Transversalis Colli. 



Supra-scapular. 



f Laryngeal, to posterior muscles of larynx. 

 I Tracheal Brs. to trachea, anas. Bronchial. 

 I CEsophageal Brs. to oesophagus. 

 [Ascending- Cervical, to muscles, spinal cord. 

 ^Superficial Cervical, beneath Trapezius. 

 I Posterior Scapular, along post, border. 

 (Supra-acromial, anas. Acromial Thoracic. 

 I Communicating, across neck of scapula. 



" Comes Nervi Phrenici (Superior Phrenic), to'Diaphragm. 

 Mediastinal Brs. to connec. tissue, ant. mediastinum. 

 Pericardiac Brs. to upper part of pericardium. 

 Sternal Brs. to sternum and Triangularis sterni. 

 Anterior Intercostals, to 5 or 6 upper intercostal spaces. 

 Perforating, to Pectoralis major, mammarv gland, etc. 

 Ant. Intercostals, to lower spaces. 

 Brs. to lower pericardium, Diaphragm, etc. 

 . . f anas. Epigastric of Ext. Iliac. 

 L Superior Epigastric { supplies P R g ectus abdominis> etc . 



7- 



INTERNAL 

 MAMMARY. 

 (Plate i.) 



. .. . 



Musculo-phremc 



8. f Profunda Cervicis, ascends along back of neck, to axis ; anas, with 



SUPERIOR Art. princeps cervicis of Occipital. 



INTERCOSTAL. 1 Brs. to ist and 2d intercostal spaces, giving br. to post, spinal mus- 

 (Plate i.) I cles. and one to spinal cord, and anas, with Aortic Intercostals. 



