Twelve-year-old Aaron tried out for the Little League baseball team and was chosen as a pitcher.One day,after a few months of practice and games,Aaron's father told him,"Hey,kid,you're really getting some muscle definition there! You're going to be a major league pitcher someday,with muscles like that!" Which of Aaron's muscles in particular do you think were growing stronger and getting larger as a result of his pitching?
A)triangularis,masseter,trapezius
B)peroneus longus,biceps femoris,gastrocnemius
C)sartorius,soleus,rectus femoris
D)deltoid,triceps brachii,and brachioradialis
E)mentalis,risorius,levator anguli oris

Question

Quizplus · Accepted Answer

Pitching in baseball requires a lot of arm strength and throwing motion, which heavily involves the deltoid and triceps brachii muscles. The brachioradialis also plays a role in forearm rotation and stability during the pitch. Therefore, these muscles would be the most likely to grow stronger and larger as a result of pitching.

Twelve-Year-Old Aaron Tried Out for the Little League Baseball Team