When pressure on the Median Nerve is removed, the symptoms go away and so does the threat of permanent nerve damage. The Median Nerve, runs right through the narrow passage known as the Carpal Tunnel at the base of the hand just beyond the wrists. The numbness and loss of feeling sensation is the bodyâs way of declaring itself injured and needing attention.
Ventricular diastole is the period during which the ventricles are filling and relaxing, while atrial diastole is the period during which the atria are relaxing. The term diastole originates from the Greek word Î´Î¹Î±ÏÏÎ¿Î»Î·, meaning dilation. Diastole is closely related to the phenomenon of recoil within ballistics.
1. Explain why ventricular contraction (systole) and the 'lub' sound occur immediately after the QRS complex. The lub sound occurs during the beginning stages of systole (ventricular contraction) and when the atrioventricular valves, which prevents blood from flowing back into the atria. The QRS complex is the first heart beat of the cycle, so directly after the heart beat or QRS complex, the valves close to prevent backflow and makes the âlubâ sound. 2. Explain why ventricular relaxation (diastole) and the 'dup' sound occur after the T wave. The T wave is the wave produced by the relaxation of the ventricles, which causes the blood pressure to drop and when the semilunar valves close, the âdupâ sound is made. 3.