Heart

There are side effects from medications- such as headaches and weight gain from fluid retention. Most of the side effects- in my case- were worth it. I traded a life before the transplant- of not even being able to walk up the stairs to my room- to a life of playing sports and rock climbing! The success rates of transplants are incredibly high but as with any major surgery, one must recover.

It can be from anxiety, over exertion, heart disease, and high blood pressure, among other causes. If you are having any chest pain, pain down the left arm, or a tightness or squeezing sensation in your chest, or nausea, call you doctor immediately. This could be signs of a heart attack. If you are not having any other symptoms, but the shortness of breath and rapid heart beat persists, you should call your doctor just to be on the safe side. It's always better to err on the side of caution.

The blood would not be able to get pumped round the body and the longer it goes on for the harder it takes to breath and after a while your heart will stop working and you cant breath because the heart has stopped working

The right side and sends blood to the lungs

No the way the valves of the heart are set up causes the blood to move in one direction only.

The CP epithelial layer is continuous with the ependymal cell layer that lines the ventricles

Heart valves are made up of Connective tissue

The breastbone (sternum) and the ribs are connected by cartilage to form the "thoracic cage" that covers the heart and lungs.

It is not unusual for ribs to be fractured when using exterior compression on the heart, as is done in CPR.

A deep inspiration causes a decrease in intrathoracic pressure. This mediates a rush of blood into the lungs and right atrium as high pressure blood will move down the exaggerated pressure gradient. The lungs also expand and have a great capacity to hold blood, which will begin to pool there. Baroreceptors in the aortic and carotid sinus will sense a drop in pressure downstream and signal to controllers in the brain to lower inhibition of heart rate via the vagus nerve. This will cause a compensatory increase in heart rate, attempting to normalize blood pressure in the aorta and carotids.

As blood leaves the left ventricle, it passes through the aortic valve an then into the aorta before being pumped throughout the rest of the body.

Diastolic Blood Pressure

In most cases, your resting heart rate will be around 60 to 100 beats per minute

Mollusks have an open circulatory system - (mixed interstitial fluid and blood plasma) and yes, they do have a heart.

Source: Biology Major

In the mediastienum....the lungs are in the pleural cavity

Our bodies burn fuel much like a car does. When you press on the gas, more fuel and air is sucked into the engine and combusted to produce more horsepower. When we exercise it is like we are pushing down on our own accelerator pedal that pumps more sugar and oxygen into our muscles to produce more power. Our heart rate and breathing increases to allow us to burn more of our fuel which, instead of gas, is adenosine triphosphate (ATP).

The science is that when we exercise our muscles need more energy and oxygen to move and so we need to breathe more air. Then the air goes down the trachea, through the bronchi and bronchioles and finally into air sacs called alveoli where the oxygen is diffused through the thin walls of blood vessels called capillaries. At the same time carbon dioxide is diffused through the wall from the blood vessel to the air sac and back out the same way the oxygen came in. Then the oxygen is transported around the body through the blood vessels and into the muscles.Then the deoxygenated blood goes to the heart and lungs to become oxygenated. This supplies oxygen to all the body tissues. As more energy is needed in the muscles more oxygen is needed in the blood so respiration increases.

When you exercise, your muscles need more oxygen and fuel to continue working. Your heart rate then increases to get more fuel and oxygen to them more quickly. Depending on how hard you are exercising, your heart will speed up accordingly to give your muscles the power to keep going.

Depends on the relationship the guy is in. If he is poor give him money and ask him out. Most guys look for hot girls to show off to their friends. Avoid those guys. Also you can give him some cheese. Guys LOVE CHEESE.

valves are round T shaped things in the heads of engines. each cylander has at least 2 valves.one inlet and one exhaust. these valves seat in the heads and are controlled by the cam in the engine, the inlet valve opens to allow fuel into ignition chamber,while the exhaust valve will be closed. on the second half of engine cycle to that cylander the exhaust valve opens to allow the exhaust,(or burnt gas) to exit the engine. this all happens in every cylander in a proper sequence to make the engine run

They're in the heart, in the center of the chest cavity, often shifted slightly to the left.

The adrenal medulla is the part of the brain responsible for the release of adrenaline, when the adrenaline is released into the blood, the SAN is stimulated to work faster and increase your heart rate, this happens when playing sport or during your fight or flight response.

However, the heart is not controlled by your brain as it is a myogenic muscle (self-exciting) this means that if you were to remove the heart from a body it would continue to beat. The sino-atrial node is responsible for the excitation of the heart. :)

Hope this helps.

Steph :)

Normally your heart rate should not increase. It should beat at a rate that it normally would even before pregnancy. Although your heart rate doesn't increase, your blood pressure should be rising due to the significant increase in the volume of blood circulating in the body. The normal heart rate for an adult female is between 60-80 beats per minute (usually around 70). actually my doctor said that the heart rate will increase. like mine is around 100-112 and he said that was normal.

2 answers, usually when its smaller its younger so its stronger and more, i guess , "hyper". Another thing is that when its small, it still has to pump blood around the whole body so instead of beating stronger, it beats faster because it is more efficient.

yes it increases it by having epinephrine and//or norepinephrine bind to beta 1 receptors on the ventricle of the heart which causes a second messanger system of cyclic AMP to phosphorylate 1) voltage gated calcium channels to stay open longer so more calcium comes inside cell from outside so more Ca can be stored in sarcoplasmic reticulm (SR) but also more interaction between actin and myosin. 2) phosphorylates calcium pump which increases its activity so more calcium can be stored in SR so there is a bigger force (bigger Stroke volume). AND also removes calcium from cytosol faster (calcium back into cisterna), which shortens the duration of refractory period which increases heart rate.

The word "pulmonary" refers to the lungs, so the pulmonary vein is a blood vessel that runs from the lungs to the heart. It carries oxygenated blood, which is unusual for veins, which (apart from this one) transport de-oxygenated blood to the heart. The pulmonary artery does the opposite: unlike other arteries, it carries de-oxygenated blood from the heart to the lungs.

Heart palpitations are irregular or unusually quick beats of your heart. The heart may seem like it is vigorously beating out of the persons chest however in most cases this condition is not harmful but may be a sign of more intense heart issues. The causes of Palpitations are sometimes very hard work outs, an increase in anxiety or depression, or with females sometimes this may occur during menstruation or pregnancy.