Biology for Kids Breathing and the Respiratory System Humans breathe through something called the respiratory system. This system is made up primarily of our lungs and windpipe. Why do we have to breathe? Our body is a very complex system.
Explanations of disorders of the respiratory system including pneumonia bronchitis asthma and emphysema. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs.
Respiratory disease is a medical term that encompasses pathological conditions affecting the organs and tissues that make gas exchange possible in higher organisms, and includes conditions of the upper respiratory tract, trachea, bronchi, bronchioles, alveoli, pleura and pleural cavity, and the nerves and muscles of breathing.
Respiratory diseases range from mild and self-limiting, such as the common cold, to life-threatening entities like bacterial pneumonia, pulmonary embolism, and lung cancer.
The respiratory system can be subdivided into an upper respiratory tract and a lower respiratory tract based on anatomical features. The upper respiratory tract includes the nasal passages, pharynx and the larynx, while the lower respiratory tract is comprised of the trachea, the primary bronchi and lungs.
The primary Respiratory system mechanics worksheet of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide.
This exchange of gases is the respiratory system's means of getting oxygen to the blood. The respiratory system lies dormant in the human fetus during pregnancy. At birth, the respiratory system becomes fully functional upon exposure to air, although some lung development and growth continues throughout childhood.
Pre-term birth can lead to infants with under-developed lungs.
Smoking and air pollution are two common causes of respiratory problems. Disorders of the respiratory system can be classified into four general areas: Coughing is of major importance, as it is the body's main method to remove dust, mucus, saliva, and other debris from the lungs.
Inability to cough can lead to infection. Deep breathing exercises may help keep finer structures of the lungs clear from particulate matter, etc. The respiratory tract is constantly exposed to microbes due to the extensive surface area, which is why the respiratory system includes many mechanisms to defend itself and prevent pathogens from entering the body.
Common Respiratory Disorders Include: Chronic Obstructive Pulmonary Disease COPD - Irritation of the lungs can lead to asthma, emphysema, and chronic bronchitis and people can develop two or three of these together.
Chronic Bronchitis - Any irritant reaching the bronchi and bronchioles will stimulate an increased secretion of mucus.
In chronic bronchitis the air passages become clogged with mucus, and this leads to a persistent cough. Emphysema - The delicate walls of the alveoli break down, reducing the gas exchange area of the lungs. The condition develops slowly and is seldom a direct cause of death.
Asthma - Periodic constriction of the bronchi and bronchioles makes it more difficult to breathe. Pneumonia - An infection of the alveoli. It can be caused by many kinds of both bacteria and viruses.The respiratory system is responsible for delivery of air to your lungs, where gas exchange occurs.
Within lung tissue, oxygen is picked up by the bloodstream, and the waste product, carbon dioxide, is removed from the bloodstream for disposal via the same air tubes.
Exercise 7: Respiratory System Mechanics Worksheet Assignment Due: Week 7 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus.
Please make sure that your answers are typed in RED. The respiratory system PowerPoint presentation and accompanying worksheet covering the layout of the respiratory system, mechanics of breathing, the nasal system, the structure of the lungs, breathing during exercise, and lactic acid production.
Mechanics of breathing. When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity. The diaphragm flattens and moves downwards and the intercostal muscles move the rib cage upwards and out.
Anatomy of Respiratory System. Path of Air Flow. 1. Nasal cavity. Hairs and mucus in the nose filters the air. The nasal cavity has lot of capillaries that warm . PhysioEXverion8 respiratory system mechanics work sheet answers.
Anatomy and Physiology 6 years ago scarynurse bio_man 1 Reply Views. Solved PhysioEx Respiratory System Mechanics. Anatomy and Physiology 6 years ago nrsntraining bio_man 3 Replies Views.