Lungs

without a heart, oxygen wont be delivered to the brain which will result in loss of brain waves and that is fatal.

The right lung is shorter than the left by 1 inch (2.5 centimeters) however, the total capacity of the right lung is greater than the left. The right lung has three lobes, the left lung has two. If you need to know the "why" then its simply in the human genetics that your lungs will never be identical unless you suffer from a mutation of the genes

The uppermost part of the lung is the lung apex. Apical means pertaining to the apex.

Oxygen passes through the lining of the lungs and into the blood. Carbon dioxide passes from the blood out into the air in the lungs. The blood flows near the surface of the lining in structures called capillaries, which are composed of tissue thin enough to allow this O2/CO2 transfer.

yes, as well as a hollow bone structure

Think about this one for a minute. Would it be a good idea for the windpipe to fold up like a garden hose every time you bend your head? What would happen if your air supply was cut off every few seconds? The cartilage keeps the trachea and bronchi open at all times.

When inhaling, the muscles work together to increase the size of the chest space, lowering the pressure inside the lungs and drawing air in from outside. Exhaling involves relaxation of the diaphragm and intercostal muscles, reducing the volume of the chest cavity and this, combined with the lungs' natural elasticity, serves to increase the pressure inside the lungs and move air out.

The point at which the trachea splits into the right and left mainstem bronchi is called the carina. Hope this helps.

The pulmonary artery takes the deoxygenated blood from the heart to the lungs where they are oxygenated then the blood is transported back to the heart through the pulmonary vein. The pulmonary vein and artery are different from other veins and arteries because vein usually carry deoxygenated blood and arteries carry oxygenated, but it is switched for the lungs because arteries carry blood away from the heart and veins carry it to the heart.

The Alveoli in the lungs have a very good capillary network because this is where gas exchange occurs. There needs to be sufficient area to allow the red blood cells to expel their carbon dioxide and to receive oxygen across the capillary and alveoli walls.

the lungs are protected with a db layer serous membrane. 1: is the superficial layer called the Parietal pleura that line the walls of the thoracic cavity. 2: The deeper layer is the visceral pleura, which cover the lungs themselves. In between the both membranes is a small space(cavity)filled with pleurisy to reduce friction.

Dysentry and diahorrea.

Small cell lung cancer is a disease in which the cells of the lung tissues grow uncontrollably and form tumors.

alveoli. they are the basic functional unit of the lungs. it is where gas exchange occurs.

It depends if the lung was ever used. In a baby who died before they ever drew their first breath, the lung would sink. Anyone else who have taken at least one breath, their lung would float because one can never fully expel all the air from your lungs no matter how hard you exhale.

No. Invertebrates, some amphibians, and most fish do not have lungs.

blood is pumped through lungs

It isnt. There is no gas exchange in the trachea this takes place at the alveoli.

Smoking causes 90% of lung cancer in men and 80% lung cancer cases seen in women in U.S.

Blood travels to the lungs because it is not oxygenated and it will become oxygenated in the lungs, since that is what the lungs are for. The pulmonary artery takes blood to the lungs, and the pulmonary vein takes blood from the lungs back to the heart, from whence it is pumped throughout the body.

By putting pressure on the lungs with the diaprhragm (a platform of muscles just below the lungs.

Trachea

When the blood is pumped through the pulmonary artery to the pulmonary capillaries The Oxygen diffuses across the alveolar-capillary membrane and is absorbed by the hemoglobin in the red blood cells.

That's the simple form. There are 4 Heme groups in each cell(heme is the iron containing substance that binds with oxygen). The first, second and third group saturate rather rapidly achieving a 75% saturation. The last group saturates at a slower rate simply because of the diffusion gradient and normally stops combining with oxygen at around 21% giving you a total of 96% saturation. This is why hemoglobin is so important. This saturation is effected by things like the patient's body temperature, the pH of the blood, the amount of hemoglobin available etc.

The oxygen content of the blood reaching the Pulmonary Veins is also effected by gravity. If the patient is upright most of the circulation goes to the bases of the lungs and the least amount of blood gets to the apices. The middle portion of the lungs gets just the "right" amount. This is important because the air ventilating the lungs goes preferentially to the apices and less to the bases. So you can see there is a mismatch in the bases and in the apices. But in the middle there is just the right matching. That is if the patient is upright. If they are lieing down the blood flow goes preferentially to to the lowest point. This whole thing is called the Ventilation/perfusion ratio. This is a very important concept when you are thinking about how a disease entity eg. pneumonia, effects the patient's Blood gases.

The other change that takes place is the exchange of CO2 that regulates the pH of the blood. CO2 is carried in the blood in combination with H2O. This forms carbonic acid. The carbonic acid is balanced by HCO3 and the result of the matching of the two results in the hydrogen ion concentration or simply, the pH. To explain the whole chemical process would be lengthy so I'll just leave it at that.

So the blood that has gone through the lungs has changed two basic ways. It has collected Oxygen to deliver to the tissues and it's had it's pH regulated so metabolic processes can go on normally.

I would explain how the pH is regulated in more detail at another time. Also, you should look up the Oxy-hemoglobin dissociation curve.There is a world of knowledge out there.

Bronchus principalis=>bronchi lobares=>bronchus segmentalis=>bronchiolus terminalis=> bronchiolus respiratorius=>ductulus alveolaris=>sacculus alveolaris=> alveolus

i hope that you don't mind latina terminology.