Explain The Basic Process Of The Respiratory System

Air is entered through the mouth and then travels down to the lungs. As gases move between the air within the alveoli and the bloodstream within the capillaries, they must cross a thin barrier of alveolar cells and one layer of capillary cells. As oxygen within the alveolar air is of higher concentration than the oxygen within the bloodstream, oxygen

Respiration begins with inhalation, which is an active motion that makes the diaphragm contract. When the diaphragm contracts it moves downward making the chest cavity increase. This causes air to enter in through the nose and/or mouth. The nose is the primary organ where the air enters and exits the body. The nasal cavity is lined with cilia and mucus that traps bacteria and foreign particles. The pharynx is a tube structure positioned behind the oral and nasal cavities. This allows air to pass from the mouth and nose to the lungs. The air travels through a thin like flap called the epiglottis which prevents food and drink from going into the lungs which is commonly known as going down the wrong pipe. The larynx, also known as the voice box, is a passage for the air to enter the trachea. The trachea is the tube that connects the throat to the Bronchi. The Bronchi splits

A person first breaths in air through either their mouth or their nostrils. The mouth and nasal passages conjoin at the pharynx. The air then continues down past the larynx and enters into the trachea also known as the windpipe. Just before the air reaches the lungs the trachea branches out into two smaller tubes called bronchi. Each of these repeatedly splits over and over into even smaller tubes known as bronchioles. These have grape like structures attached to them called

Air can be breathed in through both the nose and the naval cavity, or the mouth, also known as the oral cavity. The air, regardless of the path taken, will always lead to the pharynx, a space located at the back of throat. It will progress through the larynx,

The air will then go into the tracheae tubing system where chitin prevents the trachea from collapsing, which makes sure that there is a clear passage for oxygen to flow in and carbon dioxide to flow out. The trachea then leads right to the tracheoles. Which are an even smaller tubing system that branch from the trachea and are small tubes that go to every body cell/tissue. The tip of the tracheoles are moist to allow the gasses to be dissolved so they can diffuse in and out the tissues down their concertation gradient. Tracheoles also allow for a short diffusion distance between itself and the cells/ tissue.

Like the nose it also filters dust and other particles from reaching the lungs, and it has mucous membranes to warm and moisten the air. When the air leaves the pharynx it moves on to the larynx. The larynx is also called the voice box. It not only remains open for speech, but also during respiration. The larynx merges with the trachea just below the vocal cords. The trachea is also called the wind pipe, and it is a one inch tube that connects to the bronchi. The bronchi divide into the right and left mainstream bronchi. After entering a lung each side branches off forming many smaller passages. In the center of the bronchi is the lumen. It is the central opening where the air passes through.

The nose and the nasal cavity form the main external opening for air to come through. The air that comes through is warmed and filtered by the mucus.

The human body comprises of two respiratory sponges called lungs. The left lung is slightly smaller than the right as it makes room for placement of the heart. Due to this slightly smaller size, it only contains two lobes whereas the right lung has 3 lobes. Both lungs are host to the network of air sacs or alveoli which transport the air from the outside environment to the external and internal respiration processes.

Then the air which is high in oxygen and low in carbon dioxide is sucked in through either the mouth or nasal cavity. It goes to the pharynx (throat) then passes through the larynx (voice box). It then pases through the trachea which is held open

The nasal cavity is an air filled space found behind the nose. Air is breathed in through the nose, which is divided by the septum to form the nostrils. The septum is mainly made of cartilage. Within the nose there are small hair like structures called cilia, which stop foreign particles from being inhaled by filtering them out of the air before it continues through the system. The nose contains mucous membranes which produce a substance called mucus, this is sticky and designed to collect dust, bacteria and other particles such as pollen and also to moisten the air. When air passes through the nasal cavity it is warmed to suit the body temperature. It is warmed by blood in the

Moving air to and from the exchange surfaces of the lungs along with the respiratory passageways.

The trachea, otherwise known as the windpipe filters the air that is inhaled. It branches into the bronchi, which are two tubes that carry air into each lung. The bronchi are lined with cilia, tiny hairs which move back and forth which carry mucus up and out as a defence mechanism against pathogens. The bronchial tubes lead

The human lung is a series of blind end tubes, hollow tubes that that allow for the conduction of air. The conduction of air starts from the nasal cavity or oral cavity, continues to flow through the trachea and bronchus and finally reaches the bronchioles that lead into the alveolus that allows for gas exchange to occur (Phalen et al. 1983). This system can be broken down into two different region; a conducting region and a region of gas exchange. The conduction portion of the respiratory system begins in the nasal cavity and the oral cavity and continues to the bronchioles. The transition from the bronchioles to the alveolar duct results in the transition from the conducting region of the respiratory

In normal breathing, air is inhaled into the body via nose or mouth and moving down into the trachea, bronchi, bronchioles and alveolus where gaseous exchange take place (Hadassah Medical Center, n.d. ). A healthy bronchioles has relaxed smooth muscle layer, a thin layer of mucus which lines on the airways and wider lumen of airway so that more air can be inhaled into the lungs as shown in Figure1 (Kenny, 2014). The nose will filter the dust particles or allergens, prevent them from entering into the lungs. These allergens will be trapped by a thin layer of mucus and the cilia will sweep mucus upwards and out of the bronchiole and trachea.

Air enters your lungs through a system of pipes called the bronchi. These pipes start from the bottom of the trachea as the left and right bronchi and branch many times throughout the lungs, until they eventually form little thin-walled air sacs or bubbles, known as the alveoli. The alveoli are where the important work of gas exchange takes place between the air and your blood. Covering each alveolus is a whole network of little blood vessel called capillaries, which are very small branches of the pulmonary arteries. It is important that the air in the alveoli and the blood in the capillaries are very close together, so that oxygen and carbon dioxide can move (or diffuse) between them. So, when you breathe in, air comes down the trachea and through the bronchi into