Presentation on theme: "Overview of the Respiratory System"— Presentation transcript:
1 Overview of the Respiratory System ANATOMYOverview of the Respiratory System
2 RespiratoryThe respiratory system consists of the lungs and air passages.This system is responsible for taking in oxygen, a gas needed by all body cells, and removing carbon dioxide, a gas that is a waste product produced by the cells.
3 Why we need oxygenThe body has only a four to six minute supply of oxygen. The respiratory system must work continuously or death will occur.
4 Parts of the systemThe parts of the respiratory include the nose, pharynx, larynx, trachea, bronchi, and lungs.
5 The NoseThe two nostrils are separated by the nasal septum, which divides the nose into two cavities called the nares or nasal cavities.
6 What the Nose Do? The function of the nose; Removal of foreign bodies, either caught by the hairs of the nose or the mucous membranes which filter out he foreign objects.
7 What the nose doesA rich blood supply in the nares, warms and moistens the air.Receptors for the olfactory gives us the sense of smell.The tear ducts from the eye drain into the nose.
8 What does the pharynx do? Air leaving the nose passes into the pharnx, which is commonly called the throat, which is a common passageway for food and air.
9 Anatomy of the Respiratory System Sinus cavityNoseMouthTongueNasaopharynxoropharynxLaryngpharynxPharynxEpiglottisesophagusTrachea
10 There are three sections to the Pharynx The nasopharynx contains the tonsils and adenoidsThe oropharynx opens into the mouth.The larynopharynx opens into the larynx.Small tubes from the middle ear open into the larynopharynx
11 LarynxThe larynx , which is also called the voice box is formed of cartilage plates. The largest is the thyroid cartilage called the Adams apple.
12 LarynxThe larynx contains two folds which are your vocal cords which vibrate to produce sound and speech.At the end of the larynx is the epiglottis, that closes during swallowing which prevents foods from entering the respiratory tract.
13 Trachea The trachea or windpipe carries air to the bronchi. The rings of the trachea are almost noncollapsible which keeps the trachea open allowing for air to enter the lungs, but can be obstructed by large pieces of food.
14 TracheaCoughing occurs when the trachea’s mucous and cilia (hair like structures) move foreign objects upward. This is your bodies natural defense against choking.
15 BronchiThe lower end of the trachea is divided into two Bronchi. As the bronchi enter the lung, they branch off into smaller tubes called bronchioles. These end in tiny air sacs called alveoli.
16 The lungsThe lungs are divided into lobes: The right lung has three lobes and left lung has two lobes.Tiny grape like structures call alveoli are located in the lungs and are highly elastic.
17 LungsA rich supply of blood capillaries surround the alveoli allowing the air exchange to occur.The lungs are covered by a two layered membrane called the pleura.
18 BreathingThe process of breathing is called respiration. It involves inspiration ( inhaling of air) and expiration ( exhaling air.)One inspiration plus one expiration equals one respiration.
19 The lungsThe large muscle separating the lungs from the abdomen is called the diaphragm. This contracts along with the rib muscles and allows air to get into the lungs.
20 LungsThe alveoli expanded with fresh oxygen, exchange oxygen for carbon dioxide with the tiny blood vessels that surround the alveoli.
21 RespirationsRespirations vary at per minute and are controlled by the medulla of the brain.Chemical factors and conscious control also affect respiration.
22 Diseases affecting the respiratory system Infections are the most common affliction of the respiratory system.Pneumonia – inflamation of the lungs.Upper respiratory – Ears, eyes, nose or throat. Also called URI’sEmphysema – loss of elasticity of alveoli causing air to be trapped.Asthma – causes spasms of the bronchiCancers – abnormal cell growth
24 Respiratory vocabulary Respiratory Medical Termsanoxia (ah-NOCK-see-ah) without oxygen.apnea ( AP-nee-ah) temporary cessation of breathing.bradypnea (brad-ihp-NEE-ah) abnormal slow breathing.Cheyne-stokes respiration (chayn-stohks) periods of apnea lasting 10 to 60 seconds.dyspnea (disp-nee-ah) difficulty with breathing or labored breathing.epistaxis (ep-ih-stack-sis) nose bleed.hyperpnea ( high-perp-NEE- ah) an increased respiratory rate, or breathing that is deeper.hypoxia ( high-POCK-see-ah) defeciency of oxygen.rhinorrhea (rye-noh-REE-ah) thin watery discharge from the nose.tachypnea ( tack-ihp-NEE- ah) abnormal rapid respirations.