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gcse math
the respiratory system is made up of organs that work together to bring oxygen into the body, transport it around the bloodstream, and remove carbon dioxide from the cells.
the respiratory system has two main functions - breathing and gas exchange.
the respiratory system consists of the nose, pharynx (throat), larynx (voice box), trachea (windpipe), bronchi (airways), lungs, diaphragm, and chest wall muscles.
the respiratory system has two main functions - breathing (ventilation) and gas exchange (respiration)
the respiratory system consists of the nose, pharynx (throat), larynx (voice box), trachea (windpipe), bronchi (airways leading to lungs), alveoli (tiny air sacs where gas exchange occurs).
breathing involves taking air in through the nose or mouth (inhalation) and pushing it out again (exhalation).
breathing involves taking in air through the mouth or nose, passing down the throat and windpipe, branching out into smaller tubes called bronchioles, ending at tiny air sacs called alveoli which are surrounded by capillaries carrying blood.
during inspiration, the intercostal muscles contract, pulling the ribcage upwards and increasing the volume inside the thorax cavity. This creates negative pressure that draws air into the lungs.
the respiratory system includes structures such as the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveolar ducts, and alveoli.
the respiratory system includes structures such as the nose, pharynx, larynx, trachea, bronchi, lungs, diaphragm, and chest wall muscles
gas exchange is when oxygen diffuses from the alveoli into the bloodstream via the walls of the capillaries surrounding them, while carbon dioxide moves in the opposite direction.
the respiratory system also includes accessory muscles like the diaphragm and intercostals, which aid in breathing.
during expiration, the intercostal muscles relax, allowing the ribcage to move back towards its original position. The elastic recoil of the lungs also contributes to this movement.
oxygen-rich blood then travels back to the heart via pulmonary veins, while deoxygenated blood returns to the lungs via pulmonary arteries.
gas exchange takes place between the air we breathe and our blood, which carries oxygen and nutrients throughout the body.
during expiration, the intercostal muscles relax, allowing the ribcage to move back towards its original position. The elastic recoil of the lungs also helps push air out during exhalation.
gas exchange takes place between the air we breathe and our blood, which carries oxygen and nutrients throughout the body.
the upper respiratory tract is composed of the nasal cavity, pharynx, and larynx.
the lower respiratory tract is made up of the trachea, bronchi, bronchioles, alveolar ducts, and alveoli.
the process of breathing is controlled by the brainstem, specifically the medulla oblongata and pons regions.
the respiratory system is responsible for breathing, which involves taking in oxygen from the environment and removing carbon dioxide produced during cellular metabolism.
the medulla oblongata controls involuntary processes such as heart rate, breathing, and swallowing.
oxygen enters the body during breathing and travels to cells where it combines with glucose to produce energy.
carbon dioxide leaves the body during breathing and is produced by cellular metabolism.
respiration is the process of gas exchange between the atmosphere and the internal environment of an organism.
the diaphragm is a dome-shaped muscle located below the lungs that contracts during inhalation, causing the lungs to expand and draw air in.
The respiratory system is composed of several organs including the nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli, lungs, diaphragm, and chest wall muscles.
the respiratory system plays an important role in maintaining homeostasis by providing oxygen to cells throughout the body and removing waste products like carbon dioxide.
carbon dioxide leaves the body during breathing and is produced by cellular metabolism.
Ventilation involves moving air into and out of the lungs through the mouth or nose.
the respiratory system has three functions: ventilation, gas exchange, and protection against foreign substances.