from the body‚ to control temperature (breathing out warm air and breathing in cool air)‚ to eliminate water‚ to communicate (Voice production) and sensory input (Smell/ touch- nose hairs). The respiratory system consists of the nostrils‚ pharynx‚ larynx‚ Nostrils The nostrils expand to allow air to enter the respiratory system‚ hairs within the nostrils trap foreign bodies. Air is warmed as it passes through the nasal chambers‚ the nasal cavity is then divided by turbinate bones into nasal metatuses
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BY: Nwaezeigwe Franklin The Process of Respiration in Man The Respiratory system in Man: The human respiratory system is typical of the respiratory systems of mammals in general. It includes the nasal passages or nostrils‚ the pharynx‚ the larynx‚ the bronchi and the lungs. The respiratory system starts with the nose that encloses the nasal cavity. The nasal cavity opens outside through the openings called the nostrils. The nasal cavity is divided into two portions by a cartilaginous septum
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bloodstream‚ to be pumped by the heart to the brain and body. Cigarette smoking upsets this balanced process‚ to the detriment of the respiratory system. Effects on the Mouth‚ Larynx and Pharynx Hot gases and particulate‚ inhaled during cigarette smoking‚ contact the tissue and mucous membranes that surround the mouth; larynx‚ or voice box‚ and pharynx‚ or throat. These areas suffer continual irritation from smoking‚ and tobacco users may develop symptoms such as hoarseness‚ coughing and wheezing due
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the microscopic sacs enclosed by networks of capillaries (Figure 14-1) Passive transport process of diffusion is responsible for the exchange of gases that occur during respiration. RESPIRATORY TRACTS Upper respiratory tract—nose‚ pharynx‚ and larynx Lower respiratory tract—trachea‚ bronchial tree‚ and lungs RESPIRATORY MUCOSA Specialized membrane that lines the air distribution tubes in the respiratory tree (Figure 14-2) More than 125 mL of mucus produced each day forms a “mucous blanket”
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Lesson 5: The Function of Respiration Human Respiratory System Larynx Voice box Contains 2 thin elastic ligaments Vibrate to produce sound As air is forced up from lungs through larynx Muscular tension & position of vocal cords Produce different sounds Alveoli Network of capillary surround each alveoli Allow for exchange of O2 and CO2 Trachea‚ Bronchi & Bronchioles Trachea & Bronchi Supported by rings of cartilage Cilia & Mucus (producing goblet cell) Line inside
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Oxygen Exchange and Transport Oxygen exchange or respiration takes place at a respiratory surface; a boundary between the external environment and the interior of the body. Gas exchange is the process by which oxygen and carbon dioxide (the respiratory gases) move in opposite directions across an organism’s respiratory membranes‚ between the air or water of the external environment and the body fluids of the internal environment. Oxygen is needed by cells to extract energy from organic molecules
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respiratory tract is the path of air from the nose to the lungs. It is divided into two sections: Upper Respiratory Tract and the Lower Respiratory Tract. Included in the upper respiratory tract are the Nostrils‚ Nasal Cavities‚ Pharynx‚ Epiglottis‚ and the Larynx. The lower respiratory tract consists of the Trachea‚ Bronchi‚ Bronchioles‚ and the Lungs. As air moves along the respiratory tract it is warmed‚ moistened and filtered. The lungs flank the heart and great vessels in the chest cavity. (Source: Gray’s
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the blood and tissues. Function 1. Regulation of blood pH 2. Voice production 3. Olfaction 4. Innate immunity ANATOMY OF THE RESPIRATORY SYSTEM A. Upper respiratory tract -external nose‚ nasal cavity and pharynx B. Lower respiratory tract -larynx‚ trachea‚ bronchi and the lungs NOSE A. External nose Visible structure that forms a prominent feature of the face Consists of hyaline cartilage‚ although the bridge of the external nose consists of bone. Nares/nostrils – external openings
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. kidneys . lungs . intestines 18. Small air sacs in the lungs where many capillaries exchange carbon dioxide for oxygen taken into the body: . bronchi . alveoli . trachea 19. The windpipe: . larynx . adenoid . trachea 20. Small spaces in the skull thought to regulate the temperature and humidity of the air taken into the body: . alveoli . tonsils . sinuses 21. Lymph tissue and lymph nodes that protect
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1.*A decrease in total plasma volume results from the: antidiuretic hormone mechanism 2. *A hematocrit of 56% would be an indication of: polycythemia 3. *A hematocrit value of 38 ml/ 100 ml of blood would be: in the low normal range for a woman 4. *A normal adult red blood cell count ranges from: 4.2 to 5.8 million/ cubic mm 5. *A person with thymus malfunction would: produce fewer T cells‚ thus reducing the effectiveness of the immune system. 6. *After birth‚ the umbilical vessels remaining
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