Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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the upper chambers (rooms) pf the heart are known as
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- O Question 55 In the heart, lub - dub refer to, in order, the O closing of all valves simultaneously O closing of the AV valves and closing of the semilunar valves opening of the semilunar valves and opening of the AV valves O closing of the AV valves and opening of the semilunar valves um #3 Lecture S..pdf Den filearrow_forwardChoose all the statements that are correct. When the heart beats, first the right side of the heart contracts, and then the left side of the heart contracts. That is one heartbeat. The sympathetic nervous system speeds up the heart rate and the parasympathetic system slows down heart rate. M Bradycardia is when the heart beats faster than normal. The SA node is the pacemaker of the heart. Coronary arteries deliver blood to the muscle of the heart. A heart attack is a myocardial infarction. The ECG (EKG) has a QRS wave that represents ventricular depolarization (the message to tell the ventricle to contract. The heart needs nerve stimulation in order to contract.arrow_forward1. This is not and will not be gradedarrow_forward
- Please I need help understanding this question, I'm not sure if I'm understanding it right.arrow_forwardThe only vessels that provide direct access oxygen and nutrients to nearly every cell in the body are the __________. A arterioles B capillaries C arteries D venules E veinsarrow_forwardsluis 1. Arteries that supply blood to cardiac muscle 2. Layer of heart wall containing cardiac muscle 3. Extensions of the atria alsoq ard 4. Heart is located here (area between the lungs)arrow_forward
- The pco2 in the aorta is a 40mmhg b 46mmHg c 100 mmHgarrow_forwardA person showing signs and symptoms of a heart attack will often: Panic and faint Deny that they are having a heart attack Take a nap to relieve pain None of the abovearrow_forwardWhich term and events apply to a chamber of the heart that is in Systole Contracting;filling with blood Relaxing;filling with blood Relaxing ;ejecting blood Contracting;ejecting bloodarrow_forward
- What are parts C, D, E, and F of the heart?arrow_forwardYou are a red blood cell. Trace the path you would follow if you were returning to the heart (through the vena cavae) and you eventauly leave the heart theough the aorta to return to systemic circulation. Please include ALL structures you may pass through.arrow_forwardBecause of a reduced blood supply to the AV node, the delay in theconduction of action potentials from the SA node to the AV node isincreased slightly. All other areas of the conducting system of the heartare functioning normally. Predict how this affects the normal rhythm ofthe heart.arrow_forward
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