If the vagal nerves to the heart were cutthe result would be that A) the heart would stop, since the vagal nerves trigger the heart to contract B) the AV node would become the pacemaker of the heart D) the heart rate would not be affected E) the heart rate would increase

Frank-Starling law of the heart states: if you increase the stretch of the cardiac muscle fibers you will decrease the force of contraction a greater end diastolic volume will produce a weaker contraction of the ventricle by increasing the force of ventricular contraction you will increase the end systolic volume if you increase the stretch of the cardiac muscle fibers you will increase the force of contraction.

The ""lub-dup"" heart sounds are produced by the _______"   A "opening of the atrioventricular valves (""lub"") and the opening of the semilunar valves (""dup"")"   B "opening of both the atrioventricular and semilunar valves (""lub"") and the closing of both the atrioventricular and semilunar valves (""dup"")"   C "closing of the atrioventricular valves (""lub"") and the closing of the semilunar valves (""dup"")"   D "closing of the semilunar valves (""lub"") and the closing of the atrioventricular valves (""dup"")"

A) The term used to describe one complete heartbeat, or the time for both contraction and relaxation of the heart muscle is the _____________________. B) The term _____?_________ refers to ventricular contraction, while the term ______?________ refers to ventricular relaxation. C) f a patient has a heart rate of 75 beats per minute, then what is the average length of time that each of the following parts of that cycle lasts? (time in secs) -atrial contraction:  ____________________ -atrial relaxation:   ____________________ -ventricular contraction ____________________ -quiescent period:  _____________________ -1 entire cycle: _____________________ D)  When you listen to (auscultate) heart sounds, what you are hearing are the sounds of valves _______?______________. E.) A heart murmur indicates some kind of valve ________?____________.

What is the function of the heart? Explain.

(i) A scene of a TV drama showed that a heart continues to beat when it was ripped from a brain-dead patient. Is that possible? Elaborate your answer.

2) attached to the heart. You are looking at the heart as it would appear in the chest of a person sitting in front of you. a)_Identify the structures (A-H). Hint: All structures are chambers of the heart or vessels b) Label the BASE and APEX of the heart in the diagram. c) List (in order) 7 structures in the path of blood as it travels from structure F in the diagram to structure A in the diagram (the names of F and A are included in your list of 7!). You will need to include 2 types of peripheral vessels not shown in the diagram in your list in order to complete the circuit. | A H F D A В E F G H

Increased contractility of the heart results in all of the following EXCEPT (A) increased stroke volume (B) increased force of contraction (C) increased end-systolic volume (D) increased venous return

Local control of blood flow through a tissue a) maintains a blood flow independent of changes in blood pressure b) is controlled via a relaxation or contraction of precapillary sphincters c) is controlled by changes in oxygen levels in the tissue d) is controlled by changes in carbon dioxide levels in the tissue

Which nerve(s) transmit an action potential from the brain to the heart? a) the vagus nerve only   b) the vagus and glossopharyngeal nerves   c) the vagus and phrenic nerves   d) the phrenic and glossopharyngeal nerves   e) the phrenic nerve only