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How many ribs articulate with the thoraic vertebrae?
12
In a human puncture of the thoraic wall but not of the lungs itself will cause?
As the pressure increases in the space between the chest wall and the lungs from an influx of blood, the collapse of the lung due to a relatively low pressure (within the lung) will occur.
Which of the following is not a nerve plexus?
The spinal nerve is not a nerve plexus. Nerve plexuses are complex interwoven networks of nerves that form in the peripheral nervous system, whereas spinal nerves are the mixed nerves that emerge from the spinal cord and are not organized in a plexus-like fashion.
What type of education will you need to become a thoracic surgeon?
A recognized medical degree from an accredited medical school must be earned in order to become a cardiothoracic surgeon. A Doctor of Osteopathic Medicine (D.O.) degree, a Doctor of Medicine (M.D.) degree, or a Bachelor of Medicine/Bachelor of Surgery (MBBS/MBChB) degree are accepted degrees. After earning one of these degrees, a surgical residency and additional training in cardiothoracic surgery must be completed and board certification examinations must be passed.
What do intercostal muscles do?
allows your ribs to move up and down when you breaththe intercostal muscles contract.these pull the ribcage upwards.so the chest increases in volume the intercostal muscles relax which lowers the ribcage.the chest decreases in volume see the diagram below for helpThe intercostal muscles are located between the ribs and they lift the diaphragm allowing oxygen to flow in and out of the lungs. Basically, they aid in breathing.
Do the abdominal segments have spiracles in grasshoppers?
Honey bees have ten spiracles (breathing pores). Three are on the thorax, and seven on the abdomen. The spiracles are the openings to the trachea, which expand and collapse like lungs in response to abdominal wall movement. Two large sacs in the abdomen and smaller ones in the head and thorax lead to very small breathing tubes with blind ends which are filled with liquid which absorbs oxygen and which diffuses into the tissues.
How does gas exchange?
Gas exchange occurrs in all organisms, but judging by the category this question placed in, I am making the assumption that this question is asking about gas exchange in humans. Humans use lungs for gas exchange. The lungs are two internal "sac-like" organs. The lungs are able to expand and contract becuase of the alveoli. Alveoli are small cavities/air sacs in the lungs. The lungs are connected to the outside air by way of a system of tubular passageways; the trachea, bronchi and bronchioles. Each lung is divided into a number of lobes, each recieving its own bronchus. Each bronchus divides many times into bronchioles, which then end in many alveole ducts and alveoli. These provide a very large surface area for the exchange of respiratory gases by diffusion betweent he alveoli and the blood in the capillaries. Gas exchange occurs in two stages of ventillation, called inhilation and exhilation. Inhilation is when the intercostal muscles contract, which causes the ribcage to expand and move up, and the diaphragm then contracts and moves down. This action causes the thoraic voume to increase, which allows the lungs to expand and this decreases the pressure inside them. Air is then pulled in from the atmosphere is response to this pressure gradient. The cardiovascular system then participates by transporting the respiratory gases to and from the cells of the body. In the second stage of ventilation, exhilation, the intercostal muscles and diaphragm relax. and gravity pulls the ribcage down. The lungs then recoil, which decrease the volume inside and therefore increases the pressure. The air then flows out of the lungs to equalize with the air pressure outside of the lungs, and with it we release carbon dioxide. So to summarise: We breathe in O2 when the lungs expand, and we release CO2 when the lungs contract.
