For inspiration during labored breathing, which of these muscles is NOT contracted?
a. diaphragm
b. external intercostal muscles
c. internal intercostal muscles
d. pectoralis minor muscles
e. sternocleidomastoid muscles
Answer: C
Biology Questions and Answers.
a. diaphragm
b. external intercostal muscles
c. internal intercostal muscles
d. pectoralis minor muscles
e. sternocleidomastoid muscles
Answer: C