The recoil is from 27cm to 21 cm, therefore there is 6cm of recoil. The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave-a pulse- that travels through the entire arterial system. The elasticity of the lungs is due to molecules called elastins in the extracellular matrix of lung tissues and is maintained by surfactant, a chemical that prevents the elasticity of the lungs from becoming too great by reducing surface tension from water. Cardiac Output or peripheral resistance. Thus the blood circulates through the lungs from the right ventricle to the left auricle and through the rest of the body from the left ventricle to the right auricle. The alternate expansion and elastic recoil of an artery with each systole of the left ventricle is called the pulse. pressure wave due to alternating expansion & recoil of elastic arteries push surface artery against firm tissue (usu radial pulse) also called pressure points (Why??) The impure blood from the right ventricle passes through the pulmonary artery to the lungs for purification by opening the pulmonary semilunar valves. The pulse rate is the same as the heart rate and averages between 70 and 90 beats per minute in resting state. Alternate locations are in front of the ear (temporal artery), at the side of the neck (carotid artery), and on the top (dorsum) of the foot (dorsalis pedis). •Type of circulation that passes the capillary: ... expansion and recoil of an artery that occurs with each beat of the left ventricle. The original diameter of the stent is 0.74 mm, but after the expansion period, the middle section has a diameter of 2 mm. If the pulse rate is rapid it is termed as tachycardia. The alternate expansion and elastic recoil of an artery with each systole of the left ventricle is called the pulse. Pressure is lowest when the ventricles relax during diastole. Blood pressure depends on blood flow and resistance to blood flow C. Pressure changes as blood flows through the systemic circulation D. Blood pressure is expressed as systolic pressure over diastolic pressure E. … Expansion and recoil of an artery during heart activity: Pulse: Then the arteries contract (recoil) as the blood moves further along in the circulatory system. All writings, discussions, The The amount of blood that flows to a tissue through capillary beds is called A.microcirculation. The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave - pulse - that travels through the entire arterial system. Then the arteries contract (recoil) as the blood moves further along in the circulatory system. The pulse is the alternate expansion and recoil of a blood vessel wall (the pressure wave) that occurs as the heart beats. Normal pulse rate. Heart sounds can be easily heard by using stethoscope. 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