Presentation on theme: "Respiratory System The respiratory system is the body system that provides body cells with oxygen and removes carbon dioxide that cells produce as waste."— Presentation transcript:
1 Respiratory SystemThe respiratory system is the body system that provides body cells with oxygen and removes carbon dioxide that cells produce as waste.
2 Respiratory SystemThe respiratory system works with the cardiovascular system. We breathe in air which your blood circulates to all parts of the bodyGoal of respiratory system is to deliver oxygen to body and take away carbon dioxide from bodyInspiration = air flowing into lungs (inhaling)Expiration = air flowing out of lungs (exhaling)
3 Stages of RespirationPulmonary ventilation – actual movement of air in and out of lungsExternal respiration - gas exchange (oxygen and carbon dioxide) between blood and lungsRespiratory gas transport – movement of gases throughout the body via the blood in the cardiovascular system (hemoglobin carries oxygen)Internal respiration – gases exchange between blood and the cells of the body
4 Breathing Air enters through your nose and mouth when you inhale Mucus in the nasal passages warms, moistens, and filters the airCilia – tiny hairs that protect the nasal passageways filtering out dust and other particles that enter the noseMucus is a thick secretion that moistens, lubricates, and protects mucous membranes.A mucous membrane is a type of tissue that lines body cavities and secretes mucus.
5 Path of Respiration Nose and Mouth Pharynx (throat) Larynx (voice box) Epiglottis (flap that covers the entrance to the trachea when you swallow, the flap opens when you breathe to allow air to enter trachea)Trachea (windpipe, tube connects throat to bronchi and lungs)
6 Path of Respiration (continued) 6. Bronchi (trachea splits into 2 smaller tubes leading to lungs) 7. Lungs 8. Bronchioles (bronchi branch into smaller tubes as they enter each lung) 9. Alveoli (microscopic air sacs covered with blood vessels)
9 AlveoliThe walls of the alveoli are so thin that oxygen and carbon dioxide can easily pass through themClusters are in direct contact with pulmonary capillariesTwo exchanges take place in the alveoliOxygen passes from alveoli into capillariesCarbon dioxide passes from your capillaries into the alveoli
11 DiaphragmSheet of muscles that lies across the bottom of the chest cavitySeparates the chest from the abdomenFunction is to help pump carbon dioxide out of the lungs and pull oxygen into the lungs
12 Diaphragm Muscle Inhaling - Diaphragm contracts when you breathe in pulling downward and creating more space for your lungs to expand (like a balloon)Exhaling - Diaphragm relaxes when you breathe outthe space for the lungs is reduced and air is forced out of the lungs
13 Lungs The lungs are covered by a thin tissue layer called the pleura The PLEURA are the two membranes, that surround each lobe of the lungs and separate the lungs from the chest wallthe lung on the left side of your body is a bit smaller than the lung on the right. This extra space on the left leaves room for your heart.
15 Disease and Disorders Asthma – constriction of airways Emphysema - damage to air sacs walls causing loss of elasticityBronchitis - inflammation of bronchial tubesCOPD – Chronic Obstructive Pulmonary Disease - lung disease causing shortness of breathLung Cancer -malignant tumors that develop in lung tissue
16 How to Keep your Respiratory System Healthy Do not smokeAvoid breathing secondhand smokeDo not inhale harmful drugsAvoid breathing polluted airExercise regularlyAvoid inhaling harmful chemicalsSeek medical help for respiratory infections