Question

The ____ tendon (or aponeurosis) is the point of insertion for all muscle fibers of the diaphragm.

a) Costal
b) Tendinous
c) Central
d) Phrenic

Answer 1

The correct answer is c) Central, as the central tendon is the point of insertion for all muscle fibers of the diaphragm.

Step-by-step explanation:

The point of insertion for all muscle fibers of the diaphragm is the central tendon (or aponeurosis). This means the correct answer to the question is c) Central. The diaphragm is a convergent muscle, meaning it has a broad area of muscle fibers that come together at a common attachment point. The central tendon acts as this attachment point for the muscle fibers of the diaphragm, similarly to how the large pectoralis major muscle converges on the humerus via a tendon. This central tendon is crucial as it is the place where the inferior surface of the pericardial sac and the pleural membranes fuse, and where the skeletal muscle portions of the diaphragm insert into.