Which of the following is NOT a connection point for the diaphragm?

The diaphragm is a large, dome-shaped muscle located at the base of the thoracic cavity that plays a crucial role in respiration. It connects to several anatomical structures that provide it with stability and help it function effectively during inhalation and exhalation.

The xiphoid process, spine, and 12th rib are all direct connection points for the diaphragm. The xiphoid process serves as an attachment point at the bottom of the sternum, anchoring the muscle. The diaphragm also connects to the lumbar vertebrae of the spine, providing a strong foundation. Additionally, the 12th rib is involved in the attachment of the diaphragm, helping in creating the dome shape essential for proper respiratory function.

In contrast, the clavicle does not serve as a connection point for the diaphragm. It is situated above the first rib and acts mainly as a support structure for the shoulder and does not provide any attachment for the diaphragm itself. This distinction is what makes the clavicle the correct choice as the anatomical structure that the diaphragm does not connect to.