Respiratory system of human body parts and functions pdf
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The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx , larynx , trachea , bronchi and lungs. The respiratory system does two very important things: it brings oxygen into our bodies, which we need for our cells to live and function properly; and it helps us get rid of carbon dioxide, which is a waste product of cellular function. The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs.
Respiratory System: Our Avenue for Gas Exchange
The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs, and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide. The respiratory system has many functions.
Place your hand over your chest, take a deep breath, and then let it out. Of course you already know that your lungs fill with air when you breathe, but did you know that your respiratory system does more than simply move oxygen into and out of your lungs? The structures of the respiratory system interact with structures of the skeletal, circulatory, and muscular systems to help you smell, speak, and move oxygen into your bloodstream and waste out of it. Image from Human Anatomy Atlas. Click here to explore the images from this blog post in 3D using Human Anatomy Atlas or later!
The respiratory system also respiratory apparatus , ventilatory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs. These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood. These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles. In birds the bronchioles are termed parabronchi. It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds.
Most of the organs of the respiratory system help to distribute air, but only the tiny, grape-like alveoli and the alveolar ducts are responsible for actual gas exchange. In addition to air distribution and gas exchange, the respiratory system filters, warms, and humidifies the air you breathe. Organs in the respiratory system also play a role in speech and the sense of smell. Upper respiratory tract: Composed of the nose, the pharynx, and the larynx, the organs of the upper respiratory tract are located outside the chest cavity. Lower respiratory tract: Composed of the trachea, the lungs, and all segments of the bronchial tree including the alveoli , the organs of the lower respiratory tract are located inside the chest cavity. The inferior lobe is a section of the human lung. Each lung is divided into lobes; the right lung consists of the superior, middle, and inferior lobes,.
The primary function of the respiratory system all parts of the body. lungs. These tubes branch off to each lung. Diaphragm: a strand of human resp alveoli.
The respiratory system also helps us to smell and create sound. The following are the five key functions of the respiratory system. The respiratory system aids in breathing, also called pulmonary ventilation. In pulmonary ventilation, air is inhaled through the nasal and oral cavities the nose and mouth. It moves through the pharynx, larynx, and trachea into the lungs.