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Why can the lungs expand and contract Is it because of muscular walls?
The lungs can expand and contract due to the presence of specialized muscles called the diaphragm and intercostal muscles that help regulate the volume of the thoracic cavity. When these muscles contract, the volume of the chest cavity increases, causing air to flow into the lungs (inhalation). When these muscles relax, the volume decreases, causing air to flow out of the lungs (exhalation).
Does your chest expand because your lungs inflate or do your lungs inflate because your chest expands?
There are no muscles in the lungs that help inhale or exhale, this is the job of the diaphragm.
Are the lungs a part of the order of blood flow?
no
What result from the contraction of these muscles and how is this accomplished?
Under what internal conditions does air tend to flow into lungs?
What is the diaphragm muscle and the chest muscles are used for?
Breathing. These muscles are used to change the pressure in the chest so air can flow in and out of the lungs (on inspiration and expiration).
What is peak flow?
This is the speed of the air moving out of your lungs at the beginning of the expiration, measured in liters per second.
Why intrathoracic decreases during inspiration?
During inspiration, the diaphragm contracts, moving downward, and the external intercostal muscles contract, moving the ribcage upward and outward. These actions increase the thoracic volume, causing the intrathoracic pressure to decrease. This decrease in pressure creates a pressure gradient that allows air to flow into the lungs.
How do you inhale and exhale in the respiratory system?
During inhalation, the diaphragm and rib muscles contract to expand the chest cavity, allowing air to flow into the lungs. During exhalation, these muscles relax, causing the chest cavity to decrease in size and air to be pushed out of the lungs. This process is driven by changes in air pressure within the lungs.
How does the order of air flow into the lungs during inhalation contribute to the overall respiratory process?
The order of air flow into the lungs during inhalation helps to bring oxygen-rich air into the lungs, where it can be absorbed into the bloodstream. This process is essential for providing the body with the oxygen it needs for cellular respiration and energy production.
Under what internal condition does air tend to flow out of the lungs?
Air tends to flow out of the lungs when the internal pressure of the lungs is higher than the atmospheric pressure. This pressure difference is created by the contraction of the diaphragm and intercostal muscles during exhalation, which reduces the volume of the lungs and forces air out.
How does the respiratory system work together with the circulatory system and muscular system?
The circulatory system carries the oxygen full/lacking blood to and from the lungs. The muscular system makes the lungs expand and contract so the air can flow in and out of the lungs and out the capillaries.
What the thing that cause inhalation?
As your diaphragm or intercoastal muscles contract the size of the lungs increases. This creates a pressure difference between your lungs and the surrounding atmosphere. By increasing the size of the lungs you create a low pressure environment in the lungs by expanding the same amount of gas to a larger area. this pressure difference doesn't have to be much 1mmhg is more then enough, the main thing is just that you need a difference in preasure. Air flows from high preasure to low preasure, so by decreasing the preasure in the lungs air flows into the lungs. as you breath out you make the lungs smaller by relaxing the muscles and diaphragm, making the volume in the lungs decrease, thus increasing the preasure and moving the air from inside the lungs out to the surrounding atmosphere.
