During the beating of the heart, in which region will the highest pressure develop?
489834
Left ventricle because it has to provide force to push blood through entire body.
926156
As a rule, males, their age plus 100 for the systolic, or first number. This holds good until you hit about 50, so, a good systolic is about 140 to 150.  This is the maximum pressure exerted on the artery walls during the contraction of the heart.\n\nThe diastolic, or bottom number needs to be below 90, and is best if in the low 80's to upper 70's. This is the pressure in the artery between contractions. When this number gets into the 90's, doctors begin to worry. When it goes to and above 100, well, these people are usually on BP meds long term.
170323
The diastolic pressure should not vary more than 5 to 10 mm as this represents pressure in the system when the heart is not contracting. An increase in diastolic pressure more than this during exercise would indicate a serious malfunction within the cardiovascular system.
860167
core? of your chest?\nthat would be your heart/lungs area
311612
The top number is the systolic rate,the bottom number is the diastolic rate.\n\nSystolic pressure (the higher,first #) measures the force that the blood exerts on the artery walls as the heart contracts to pump the blood.\n\nDiastolic pressure (the lower second #) is the measurement of force as the heart relaxes to allow blood to flow to the heart.
869365
There is not a voluntarty "part" of your heart.  The heart is controlled by the automic nervous system, comprised of the sympathetic and parasympathetic, which are your "fight or flight" portions of your nervous system.  Your somatic nervous system controls the voluntary muscles, like the skeletal muscles.\n\nCheck this site out:  http://163.1.0.40/wfsa/html/u05/u05_010.htm
1078725
Systole refers to the active, ejection phase of the cardiac cycle, when the heart muscle forcefully contracts, ejecting blood out of the ventricles into the pulmonary artery and aorta. Diastole refers to the passive, relaxation phase of the cardiac cycle, when the heart's muscular walls relax, allowing the ventricles to fill with blood from the atria, pulmonary veins and vena cavae, in preparation for the next cycle.\n    Ventricular contraction during systole causes blood to leave the heart under high pressure, which is propagated as a pressure (pulse) wave throughout the arterial system. If our arteries were rigid pipes, then when the heart muscle relaxed during ventricular diastole, the blood pressure within the arteries would also drop close to zero. But since our arteries have walls that are highly elastic, the walls stretch and increase in diameter in response to the high pressure pulse wave of systole. Then during diastole, the arterial walls snap back to "normal" like a rubber band that's actively stretched (systole) and then allowed to passively return to normal (diastole). This passive contraction of the arterial walls, due to their elasticity, maintains positive pressure within the arteries during diastole, maintaining blood flow throughout the entire cardiac cycle. Thus, arterial blood pressure varies throughout the cardiac cycle: The maximum is the systolic pressure, and the minimum is the diastolic pressure.
848153
heart rate is defined as the number of beats( systoles) the heart produces per unit of time( ussually per minute).\nBlood pressure is the pressure exert by the blood to the vessel´s walls( the arteries and the veins).
886522
What do you mean by "the first part" of the circumflexbranch? Has the occlusion cut off the interventricular branch, as well?  Do you mean, "What part of the heart will die FIRST"?  Ischemic is spelled with a "c", by the way. Too, why is this question under respiratory diseases?
832162
The heart is a powerful muscle slightly larger than your clenched fist. It works as a pump to send oxygen-rich blood through all parts of your body. Blood contains oxygen and nutrients that every cell in your body needs to survive. The oxygen-rich blood travels throughout the arteries and vessels, nourishing the body so that it can function properly.\n\nYour heart will beat an average of 100,000 times per day. In that time, it pumps more than 4,300 gallons of blood throughout your entire body.
5167
The Frank Starling mechanism states that for every increase in fiber length, the heart will increase it's contractility.  This is the mechanism by which congestive heart failure takes place.  As the heart works harder against an increase in blood pressure, it dilates, this increases the fiber length and the heart contracts harder.  If it has to contract harder for long periods of time (high blood pressure for 20 years), it tires out and eventually, you will have lung edema, and poor peripheral perfusion.
44789
cardiac, smooth, and skeletal.
936998
a) isotonic to the blood
317023
Sounds like a job for Wikipedia!\n\nBlood pressure is the pressure of the blood on the walls of the blood vessels as the heart squirts it through the circulatory system.   When your blood first leaves the pump (your heart) it's moving as fast as it's going to, and there's as much pressure in the system as there's going to be.  The farther from the heart you go, the less the pressure in the system (just like an irrigation system, or the plumbing in a house.)\n\nThe heart not only has to pump the blood out to where it's needed, it has to pump it back again, to run it through the lungs to pick up some more oxygen so it can be recirculated.  Blood pressure is much lower on the return trip, when the blood is way out there far from the pump.  The outbound system is your arteries, the return trip is your veins.  \n\nMostly when you measure blood pressure, it's the pressure in the big arteries that are close to the skin and easy to find without poking any holes (the brachial artery in the arm is an example). \n\nThe traditional way to measure blood pressure is in millimetres of mercury (mm Hg), and you always state it the same way so everyone knows what you're talking about.  From a medical point of view what you're interested in is how much pressure there is in the system when the heart isn't squirting new blood into it (at the "resting" phase or "bottom" of the heartbeat cycle) which is called the diastolic pressure; and then how much pressure there is in the system at the top of the cycle, when your heart is forcing new blood into your arteries, which is called the systolic pressure.  So the "top of the cycle" number goes on top, and the "bottom of the cycle" number goes on the bottom.  A typical reading for a resting, healthy adult is around 120/80 (meaning 120 mmHg systolic and 80 mmHg diastolic)\n\nHope this is what you needed!
764898
c) ventricular pressure falls below atrial pressure\n \nThe atrioventricular valves are the tricuspid and the mitral valves:\nThe tricuspid valve opens and the right ventricle fills with blood from the right atrium.\nThe mitral valve opens and the left ventricle fills with blood from the left atrium.\n\nSystole is when the heart muscle contracts diastole is when the heart muscle relaxes.
164787
You can take the pulse at the carotid and radial arteries most easily on humans.  This would be the interior of the wrist (palm side) and the left front side of the neck (from your perspective).
80523
For the sake of simplicity (I hope)  The normal electrical impulse begins in the sinus node of the atria..."p" wave Both atria contract and the electrical pulse passes on to   the ventricle...QRS wave and the ventricals contracts. The heart rests and repolarizes...this is the "T" wave.  If there is a true "R" on "T" complex...this is bad....the "R" is depolarizing as the "T" is trying to repolarize ....kinda like a premature beat before the heart is ready for it....a person can go into a bad arrhythmia like V-Fib.  This can happen when there is truely an "R" on "T" complex...often it is misread.