Chordae Tendineae
Hold the valves to inner walls of ventricles
The role of the chordae tendinae (or heart strings) hold the positions of the flaps from the valves (tricuspid and the bicuspid/mitral valve) they basically help with preventing the backward flow of blood. The tendinae are attached to the valves and the papillary muscles :)
the pericardiun hold the heart in place by attatching its self to surrounding organs.
The clam does. Clams and other bivalves have very strong muscles that hold the shells tightly closed whenever they're in danger.
Yes you can use air to hold valves up in place while you change keepers.
your ribs ^^ Actually, it's your adipose tissue that is holding the kidneys in place. The kidneys are below the ribs.
In the circulatory system, veins, the vessels responsible for returning blood to the heart have valves that open to let blood flow through and shut to hold it against the downward pull of gravity.
Actually, this shouldn't happen. There are muscles and ligaments which hold it in place. But if it comes out of its socket, you should get to a doctor immediately.
it hold bone
It consists of a group of muscles and tendons that hold the pelvic girdle in place and make it functional, similar to the rotator cuff in the shoulder.
Chordae tendineae