472 



THE ARTERIES OF THE ABDOMEN. 



Fig. 378. SEMIBIAGRAMMATIC VIEW OP THE HEART AND CHIEF BLOOD-VESSELS IN THE F(ETUS. 



The vessels which convey mainly arterial blood are coloured red, and those conveying venous blood 

 blue. 



a, thyroid cartilage ; 6, thyroid body ; c, trachea ; d, right lung ; e, diaphragm below the apex 

 of the heart ; /, right, and /', left lobe of the liver, dissected to show the ramifications of the umbilical 



