Which of the following is the most important muscular structure in respiratory system of human?
A. External intercoastal muscle
B. Internal intercoastal muscle
C. Diaphgram
D. Vertebral column
Answer:C
Which of the following is the most important muscular structure in respiratory system of human?
A. External intercoastal muscle B. Internal intercoastal muscle C. Diaphgram D. Vertebral column