Heart

I think the answer is blood vessels. I hope I was right. :)

there should never be air around your heart. Air should be contained in the lungs. IF you have air in the chest cavity that is outside the lung, you have a pneumothorax and need to see a dr immediately!

The causes of a pneumothorax (air around the heart or lungs) is typically from trauma, such as a puncture wound (knife especially) or gunshot.

If you have a pneumothorax or a pneumo-mediasteinum, you may find itr difficult to breath and that you heart rate may increase due to the increased pressure on both your heart and lungs.

Air can be removed using a special syringe, allowing the lungs to expand normally and reducing the pressure on the heart.

If you have these symptoms you should go to the emergency room immediately

lungs ?
The ribcage and intercostal muscles.

Generally, foods that are high in bad cholesterol (LDL), and trans fats are going to be bad news for your heart. LDL cholesterol is associated with plaque buildup in arteries that lead to heart disease and heart attacks. Trans fats are unsaturated fats that can't be broken down by the body, so they become plaque deposits in the arteries as well. You can tell if something has trans fats in it by looking at the ingredients of a food item. If it contains any sort of hydrogenated substance, chances are, there is some amount of trans fat.

Typical "dangerous" foods are,


donuts, processed cookies, french fries, potato chips, white bread, shortening, processed meat, processed chocolate, etc.


You can use your common sense as well. Fried foods and processed foods have a lot of unhealthy fats and sugars in them, while whole foods are usually better processed by your body. A good rule of thumb is, if you can't pronounce/understand all of the ingredients on the back label, it's probably not the best thing for you.

Normal pulse rates are: * children less than 1 year old: 100 to 160 bpm * children between 1 and 10 years old: 70 to 120 bpm * people more than 10 years old: 60 to 100 bpm * trained athletes: 40 to 60 bpm So the normal pulse rate for a 9-year-old would be at the lower end of the 1-10 scale, or the upper end of the 10+ scale. (http://uimc.discoveryhospital.com/main.php?id=1419)

The muscle tissue on one side contracts while the other relaxes, controlled by electrical impulses to the heart muscle.

After the blood pumps from the atria to the ventricles, during systole.
Systole

I think it can clog your arteries and things. It‘s not good for you at all.

Describe the pathway of blood through the heart and lungs relating to pressure and volume? Describe the pathway of blood through the heart and lungs relating to pressure and volume?

A ventricle is one of the two lower chambers in the human heart.

The left side of the heart supplies blood to the body through the aorta, the largest artery in the body. The right side of the heart sends blood to the lungs for oxygenation.

Answer:

D. All of the above

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

1. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

2. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Cardiac output can be defined as the volume of blood that is being pumped by the mammalian heart through the left and right ventricle per unit time (minute).

The following conducting systems of the heart cause the ventricles to contract;

I. Atrioventricular (AV) node: it's a component of the electrical conduction system of the mammalian heart located in the Koch triangle which connect the ventricles and atria electrically.

II. Atrioventricular (AV) bundle: it's a specialized tissue that transmits electrical impulse from the atrioventricular (AV) node to the Purkinje fibres of the ventricles.

III. Purkinje fibers: it's a network of specialized cells that comprises of glycogen and they transmit cardiac action potentials in a rapid manner from the atrioventricular (AV) bundle to the myocardium of the ventricles.

Furthermore, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

Fish hearts have two chambers, one atrium and one ventricle. They draw in deoxygenated blood in a single atrium, and pump it out through a ventricle.

The heart has four chambers. The two ventricles (right and left) are muscular chambers that propel the blood out of the heart (the right ventricle to the lungs, and the left ventricle to all other organs). The two atria (right and left) hold the blood returning to the heart, and at just the right moment empty into the right and left ventricles...

The right atrium collects the veinous blood from the body and the coronary sinus and ushers it to the R ventricle. Also, the R atrium is the home of the sinoatrial node, which is the primary pacemaker of the heart.

This is a procedure that checks the status of the heart chambers and valves. Sound waves are used to produce images of the heart and check for any problem in heart muscles or valves. This exam is usually suggested if a doctor believes that the patients blood is being pumped abnormally.

There is a group of cells in the heart called the "pacemaker" that sends out a nerve shock to initiate a heartbeat. It also changes the pulse depending on certain external conditions to maintain homeostasis.

-Richard

Yes, I know they can because the chromosomes are not affected by the murmer.

Blood from heart is first pumped out by the left ventricle into the aorta artery which first carries it towards our head and then branches into three parts which further break into smaller arteries and supply blood to different body organs.

The papillary muscles and the chordae tendinae work to prevent prolapse of the AV valves. This prevents backflow of blood in the heart.

if you are talking diametar metres the heart will be bigger but it really depends on what heart your talking about for example a mouses heart is smaller than a humans lung but a elephants heart is bigger than a humans lung. ants have very small lungs so if you put a human lung in a mouse it would most probaly die and vice versa as the mouse heart would never be a ble to keep a human alive. i think both the human heart and the human lung are ingenious things that should be eaten only on im a celebrity get me out of here. by chris lane

Blood is not carried to the heart. The heart is where all the red blood cells are made. The heart pumps blood that is made directly inside the heard or the second layer of the bones which feels like a sponge.

The heart is a muscle that pumps blood and causes the blood to circulate throughout the body. It is the most hardworking muscle in the human body.