A ligament that attaches the radial styloid on the thumb side of the wrist to the scaphoid carpal bone. The tendons that attach the forearm flexor muscles to the finger and hand bones on the palm side of the hand and wrist and serve to curl the fingers and thumb and bend the wrist.
Dehydration (de-hi-DRA-shun) is the most common cause of orthostatic hypotension. Dehydration occurs if the body loses more water than it takes in. You may become dehydrated if you don't drink enough fluids or if you sweat a lot during physical activity. Fever, vomiting, and severe diarrhea also can cause dehydration. Orthostatic hypotension also may occur during pregnancy, but it usually goes away after birth. Because an older body doesn't manage changes in blood pressure as well as a younger body, getting older also can lead to this type of hypotension.
Dehydration refers to a deficit of total body water, with an accompanying disruption of metabolic processes. Dehydration is also a cause for hypernatremia. The term dehydration is distinct from hypovolemia (loss of blood volume, particularly plasma). Dehydration occurs when free water loss exceeds free water intake, usually due to exercise or disease, but also due to high environmental temperature.