LEPUS CUNICULUS 



309 



LE 



into the internal carotid, which enters the cranium through the 

 carotid foramen and is dis- 

 tributed to the brain, and the 

 external carotid, which rami- 

 fies over the whole of the 

 right side of the face and 

 head. The right sub-clavian 

 passes straight outwards to- 

 wards the right fore limb. 

 A short distance along this 

 artery is given off a small 

 vertebral artery. This runs 

 forwards and inwards to pass 

 into the vertebrarterial canal 

 supplying the spinal cord and 

 also the posterior end of the 

 brain. A little way further 

 on arises an intercostal artery 

 which, passing backwards, 

 gives off side branches to the 

 first few intercostal spaces. 

 Right close to it arises 

 another small artery, the 

 anterior epigastric (internal 

 mammary), which .runs late- 

 rally down the inside of the 

 ventral thoracic wall. Ihe 

 sub-clavian then gives off 

 certain branches to the 

 shoulder girdle and axillary 

 region, and as the brachial 

 artery goes on into the arm 

 which it supplies. 



A short distance further 

 along the main aortic arch 

 gives rise to the left common 

 carotid artery, which passes 



,1 , -i j j- u., genital ; ti., nepatic : i. A. innominate ; i.c, 



Up the trachea and IS dlS- intercostal ; I.I., internal iliac ; I.L., ilio-lumbar 



tributed in a similar manner 

 to the right. Beyond this 

 again, as the aorta reaches 



, . ., . . external carotid ; K. 1., nglu x^v^.^^xv,..,^ , *x. 



the Vertebral COlumn it gives right sub-clavian ; V., vesicular ; V.A., vertebral. 



off the left sub-clavian artery, 



which runs outwards to become the brachial after giving 



FIG. 104. Diagram of the arterial 

 system of Lepus. 



A.E., anterior epigastric ; A.M., anterior mesen- 

 teric ; B., brachial; C., coeliac; C.I., common iliac 

 D.A., dorsal aorta ; E.I., external iliac ; F., femoral 

 G., genital ; H., hepatic ; I.A. innominate ; I.C. 



L., lieno-gastric ; L.C., left common carotid ; L.E. 

 left external carotid ; L.I., left internal carotid 

 L.S., left sub-clavian ; M.S., median sacral ; P.E. 

 posterior epigastric ; P.M., posterior mesenteric 

 R., renal ; R.C., right common carotid ; R.E., right 

 external carotid ; R. I., right internal carotid ; R.S., 



