After a long scuba diving session on a caribbean reef, a patient boards a plane to dallas. he begins to feel pain in his elbow on the flight back to dallas. what is happening to him?

In Healthcare two common explanations would be used. Pain is a response almost always (unless by an outside force) towards a lack of oxygenated blood. The pressure that comes with the altitude could potentially cause some change in pressure of the blood, or a thrombosis (stationary clot) has gotten loose and has gotten stuck in the arteries of the arm which which is then called an embolism (traveling clot). The pain could potentially be the clot breaking off or the clot sticking. However remember that scuba diving also occurred. In some circumstances a rapid pressure change can cause something called an air embolism ( clot caused by air). With nitrogen bubbles either causing a blockage or they are deposited in the tissues of the elbow which causes something called decompression syndrome or the "bends" (because it likes to happen at the joints.).

Muscles in the body us with a lot of things for example, if i wanted to lift a heavy box and had no muscle i would just collapse where i was because of the fact muscles hold us together. overall they are 650 muscle in the human body, all of them have different purposes and ways to keep us together. there are three types of muscle in the body skeletal, smooth, and cardiac muscle. skeletal muscle are attached to the bone and with movement. smooth muscle, this is found in the wall of our organs, such as our stomach, this muscle with movement   as well, without this muscle, we would only be allowed to eat small amounts. the cardiac muscle is the heart muscle and probably the most important one. these are only found in the walls of the heart and the heart pump blood to the other parts of your body. we have two different types of muscle fibers, slow twitch and fast twitch. slow twitch muscles enable long-endurance feats such as distance running. fast twitch fatigue faster but are used in powerful bursts of movements like sprinting. there are three different types of muscle contractions concentric, eccentric, isometric. concentric contraction causes muscles to shorten, thereby generating force.   eccentric contractions cause muscles to elongate in response to a greater opposing force. isometric contractions generate force without changing the length of the muscle.: //athleticquickness.com/muscle-contraction-types-part-1/