Bronchioles. Bronchi. Pharynx epiglottis. (bronchus) Nose mouth. Diaphragm. Alveoli [alveolus] Larynx Trachea. Respiratory Structure

Transcription

1 Respiratory Structure Nose mouth Function Pharynx epiglottis Larynx Trachea Bronchi (bronchus) Bronchioles Alveoli [alveolus] Diaphragm Jan 13 1:28 PM 1

2 NOSE Pharynx LUNGS Larynx/Trachea Bronchi/Bronchioles Alveoli Feb 1 7:31 PM 2

3 Breathing--The process in which air enters and exits the lungs. Inhalation Exhalation Jan 29 5:42 PM 3

4 Breathing 1. Diaphragm moves down Ribs move up and out 2. Amt of space 3. Pressure 4. Air moves in HP >LP out in Inhalation Side view Diaphragm movesupward Ribs move in & down 2. Space decreases 3. Pressure 4. air moves out HP LP inside outside Exhalation side view Jan 31 1:36 PM 4

5 Gas Exchangethe movement of O 2 into the blood and the movement of CO 2 out of the blood. (at the alveoli) Where does it take place? the alveoli and the capillaries surrounding the alveoli -Oxygen enters the capillary from the alveoli enters the red blood cell as oxyhemoglobin -Carbon dioxide found in the blood leaves the capillary and enters the alveoli What processis involved in the movement of O 2 and CO 2 in and out of the alveoli? diffusion gas_exchange_during_respiration.html Feb 1 3:58 PM 5

6 Breathing Ratethe speed of breathing What controls how fast we breathe? there is a breathing center in the medulla of the brain When CO 2 level in the blood increases breathing rate increases When CO 2 level in the blood decreases breathing rate decreases **Nerve impulses are sent to the muscles of the ribs and diaphragm that causes them to contract faster or slower Breathing Rate CO 2 Conc. in blood Medulla Oblongata Feb 1 7:51 PM 6

7 The Alveoli are the site of gas exchange for our Respiratory System Alveolus are one cell thick **** Jan 29 3:02 PM 7

8 What do the villi of the small intestine and the alveoli of the lungs have in common? Villi of the Small Intestine LUNGS Jan 30 7:56 PM 8

9 CO 2 travels in the blood *** * *70%- **20%- ***10%- **HbCo 2 O 2 Jan 30 1:05 PM 9

10 RespirationMLF.notebook Feb 1 12:53 PM 10

11 Diseases of the Respiratory System Asthma: An allergic reaction in which the bronchial tubes narrow Feb 4 11:33 AM 11

12 Anaphylaxis is an acute systemic (whole body) type of allergic reaction a person has become sensitized to a certain substance or allergen(again exposed to the allergen) Some drugs, such as those used for pain relief or for X rays, may cause an anaphylactoid reaction on first exposure Histamines and other substances released into the bloodstream cause blood vessels to dilate and tissues to swell. Anaphylaxis may be life threatening if obstruction of the airway occurs, if blood pressure drops, or if heart arrhythmias occur. Jan 27 2:13 PM 12

13 RespirationMLF.notebook Lung cancer: An overgrowth of abnormal cells that interfere with normal functioning Feb 4 11:36 AM 13

14 Bronchitis: inflammation of the linings of the bronchial tubes Feb 4 11:35 AM 14

15 Emphysema: A disease in which the walls of the alveoli break down, decreasing the surface area for gas exchange. Feb 4 11:35 AM 15

16 Pneumonia: The alveoli become inflamed and flooded with fluid due to a bacterial or viral infection Feb 4 11:22 AM 16

17 Cigarettes contain: Nicotine: Drug(stimulant) that increases heart rate and blood pressure Carbon Monoxide: Competes with oxygen to bind with hemoglobin in RBCs(decreases the amount of oxygen that gets to the cells) Tar: causes cancer Feb 1 8:28 PM 17

18 Attachments RESP.doc Vital Capacities of Students in the class.doc APPLICAT.doc Smoking_.asf