The difference is internal respiration happens at the cellular level while external respiration is the actual breaths. 2. What are the key functions overall of the respiratory system? The key functions of the respiratory system is to bring air and blood into the alveolar air sacs so that the air can enter into the bloodstream while the carbon dioxide exits. It also maintains the body’s pH levels and body temperature.
Nasal cavity – Preferred entrance for outside air into the respiratory system. The hairs that line the inside wall are part of the air-cleansing system. Larynx – Voice box. Contains the vocal chords. Moving air breathed in and out creates sound.
Trace the path of an oxygen molecule from the air outside you to your tissues. First air is consumed by moving in from the nose or mouth. Next oxygen moves though the pharynx and passes your voice box or also known as your larynx. The next stop for the oxygen molecules is the trachea that parts to a left and right bronchus that is located in the lungs. This path will divide into even smaller branches that are known as bronchioles.
Unit 7 - Anatomy and Physiology – M1 Respiratory System. The respiratory system is designed to make sure that we are able to breathe in oxygen and also so that we can breathe out any waste products e.g. Carbon Dioxide. The lungs are responsible for supplying oxygen to the blood and to expel waste gasses from the body (carbon dioxide). Also if the lungs were spread out where it was 1 cell of thickness the lung would be able to fill the size of a tennis court this is so it can get as much air as it possibly can into the air sacs.
It has many different components within the cardiovascular system too, the main components include the heart, arteries, veins, capillaries and the blood. The heart is the key organ to the circulatory system. Its main function is to circulate oxygenated blood around the body and to deposit carbon dioxide into the lungs so it can be exhaled. The cardiovascular system works with a persons metabolism and are designed to do that in order to make sure the nutrient molecules are transported around the body to parts where they are needed. The Respiratory System The respiratory systems main function is to inhale oxygen and exhale carbon dioxide.
The air which we breathe in which is kept in the lungs, is the transferred into blood. The blood then goes around the heart, which then pumps oxygenated blood from lungs back into the body. The 2 systems also work together in order to get rid of carbon dioxide which is there as a metabolic waste product. D1
Next, the pulmonary capillary beds drain into venules which join to form two pulmonary veins exiting each lung. The four pulmonary veins then complete the circuit by dropping the blood off into the left atrium of the heart. The systemic system provides oxygenated blood to all body tissues. Blood leaves the left ventricle and heads for the aorta there is travels through the ascending aorta making its way to the aortic arch. The aortic arch then branches into three major branches the brachiocephalic trunk (branches into right common carotid and right subclavian), the left common carotid artery, and the left subclavian artery.
At the level of the fifth thoracic vertebra it divides into right and left pulmonary arteries, passing into the corresponding lungs. Within the lungs these arteries divide and subdivide into smaller arteries, subsequently becoming arteries and capillaries. It is between the capillaries and the lung tissue that the interchange of gases takes place. In each lung the capillaries carrying oxygenated blood join up and form two vein, so, two pulmonary veins from each lung, therefore becomes four pulmonary veins which return oxygenated blood to the left atrium of the heart. These are the only veins which carry oxygenated blood.
This system includes your airways, your lungs and the blood vessels and muscles attached to them that work together so you can breathe. The respiratory system's function is to supply oxygen to all the parts of your body. It achieves this through breathing: inhaling oxygen-rich air and exhaling air filled with carbon dioxide, which is a waste gas. The respiratory system is made up of airways these are your nose, mouth, voice box, windpipe and bronchial tubes, and the lungs and the muscles and blood vessels connected to them. Your respiratory system works by you breathing air in through your nose and mouth, which wet and warm the air so it wont irritate your lungs.
The respiratory and circulatory systems work together to deliver oxygen to cells of the body (the lungs through air exchange, and the circulatory system by delivery of hemoglobin containing red cells to the capillaries where oxygen is released into the tissues) and removal of carbon dioxide. The circulatory system delivers nutrients absorbed through the walls of the small intestine to other organs (such as the liver, muscles, brain, heart), and delivers oxygenated blood to the digestive system. You breathe in oxygen into your lungs. The oxygen diffuses across the thin walls of the alveoli in the lungs and the thin walls of the blood vessels in the lungs into the blood stream. Here it attaches to the hemoglobin molecules inside red blood cells.