216 MAMMALIA (tHE RABBIT) 



(2) The Spinal Column. 



(a) Number of cervical or ribless vertebrae just posterior 



to the skull? 



(b) Number of thoracic or rib-bearing vertebrae? 



(c) Number of lumbar vertebrae — separate vertebrae 



following the ribs? 



(d) Number of sacral vertebrae fused together? 



(e) How many caudal (tail) vertebrae? 



(f) Note the shape of the vertebrae in different regions. 



What differences in the length of their spinous 

 processes? Of their transverse processes? Why 

 these differences? 



(3) The Ribs. 



(a) How many true ribs, that is, articulated with the 



sternum? 



(b) How many false ribs? 



(c) Total number of ribs? How many in man? 



(d) Use of the ribs? 



(4) The Pectoral Girdle. 



(a) Complete or incomplete? 



(b) What bones present? 



(5) Fore Limbs. 



(a) Name the bones. 



(b) Which is the longer, the humerus or the ulna? 



(c) Radius. 



(1) Notice its articulations. 



(2) Is the proximal end internal or external to the 



ulna? 



(3) The distal end? 



(4) Can the rabbit carry its food to its mouth as a 



squirrel does? Why? 



(d) The Foot. 



(1) What part of the front foot rests upon the ground 



in locomotion? 



(2) How many carpal bones? 



(3) Metacarpals? 



(4) Phalanges? 



