Describe which muscles are what shapes.

The neck muscle as well as the biceps brachii are both fusiform muscles. The rectus femoris and the deltoids are both multipennate muscles. The pectoralis is a convergent muscle

Sites used:
http://uscunion.sc.edu/biology/dissectMusc.htm
http://www.teachpe.com/anatomy/shapes_of_muscle.php
http://www.slowtwitch.com/mainheadings/coachcorn/muscles.html
http://www.netterimages.com/image/7453.htm