1. What are the differences between internal and external respiration? Internal respiration is when the body’s cells consume oxygen and discharge carbon dioxide. External respiration is when your body is actually breathing or ventilating. The difference is internal respiration happens at the cellular level while external respiration is the actual breaths.
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.
Moving air breathed in and out creates sound. Trachea – Filters air we breathe and branches into the Bronchi. Bronchi – Two air tubes that branch off the Trachea and carry air directly into the lungs. Bronchioles – Branches from the Bronchi, which ends, contain the alveoli. Alveoli – Very small air sacs that are the destination of air breathed in.
1. Cardiovascular System is a complex network of the heart, blood vessels and blood. Its job is to deliver nutrients to the human body and remove excretory products from the body parts, it’s also protects the human body against infections, distribution of heat. At the centre of the cardiovascular system is the heart, a four chambered pump that dispenses blood to the arteries. The arteries carry nutrients and oxygenated blood to the body’s tissues.
http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs. As the deoxygenated blood continues on its journey through the heart from the right ventricle, it makes its exit by way of the pulmonic valve. This structure is a one-way valve with prevents the flow of blood back into the right ventricle once it leaves the heart. http://www.healthline.com/human-body-maps/pulmonary-valve The mitral valve: This valve is located between the left atrium and the left ventricle. As the now oxygenated blood flows back through the left atrium, it does so under increased pressure.
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.
Overall, the respiratory system enables oxygen required by the mitochondria to enter the body, this is also the system that removes carbon dioxide which is a by product of respiration. (731 words) M1- Discuss the role of energy in the body. In this part of the essay I am going to be discussing the concepts of energy in the body. I will be explaining how energy comes from the diet and describing how it is transformed into energy used by the body and saying where it is used. “The first law of thermodynamics states that energy can neither be created nor destroyed”.
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.
It starts with oxygen poor blood being pumped from the right ventricle into the pulmonary trunk. The pulmonary trunk divides into right and left pulmonary arteries that subdivide into the lobar arteries in the lungs. The lobar arteries accompany the main bronchi into the lungs and then branches forming arterioles and then pulmonary capillaries that cling to alveoli. Here oxygen moves from the air sacs to the blood, and carbon dioxide from the blood moves to the air sacs. Next, the pulmonary capillary beds drain into venules which join to form two pulmonary veins exiting each lung.
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