The structure being described is the tricuspid valve.The right atrium is one of the two atria of the heart which function by receiving blood entering the heart, it is located to the right of the left atrium and superior to the much larger and more muscular right ventricle. Between the right atrium and right ventricle is a one way valve known as the tricuspid valve.
The two subjects are both dealing with flesh, the human skin
It is the coracoclavicular ligament. As the name indicates it connects the coracoid process to the clavicle (collarbone). This ligament is made of two parts, the trapezoid ligament<span> and the </span><span>conoid ligament. These ligaments impede opposite movements of the scapula in relation to the clavicle.</span>
I would say D :) I hope i helped
