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The apex of the heart, consisting of the left ventricle, is responsible for regulating ventricular contraction and sending and receiving information signals from the heart's atrial nodes, according to About.com. The apex... More »

www.reference.com Science Human Anatomy Organs

Normal apical pulse varies depending on the age of the individual whose pulse is being taken. A normal resting heart rate for an adult is between 60 and 100 beats per minute, according to WebMD. More »

www.reference.com Health Medical Ranges & Levels

Listening to the apical pulse allows medical professionals to measure cardiac function, according to ATI Nursing Education. To take an apical pulse, a doctor or a nurse has to listen directly to the heart beat, which all... More »

www.reference.com Health Diagnostics & Imaging
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The four chambers of the heart are the right atrium, left atrium, right ventricle and left ventricle. The atria are the two upper chambers that receive blood from the veins. The ventricles are the two lower chambers that... More »

www.reference.com Science Human Anatomy Organs

The left ventricle is the main pumping chamber of the heart, and it is responsible for pumping oxygen-rich blood to the entire body, as stated by the American Heart Association. The human heart consists of four chambers:... More »

www.reference.com Science Human Anatomy Organs

The aortic semilunar valve prevents the backflow of blood when the left ventricle of the heart is returning to the relaxed state after pumping. The aorta is the largest artery in the body, and despite its size, is under ... More »

www.reference.com Science Human Anatomy Organs

The left ventricle has the thickest myocardial walls, being three times thicker than the right ventricle of the heart, according to AnatomyExpert.com. The left ventricle must have thick walls to pump oxygenated blood thr... More »

www.reference.com Science Human Anatomy Organs