1 / 11

The Respiratory System

The Respiratory System. Airflow Into The Body: 2 Passageways. External Nares Nasal Cavity Nasopharynx Trachea Primary Bronchi Lobar Bronchi Bronchioles Alveoli (air sacs). Mouth Opening Oral Cavity Oropharynx Trachea Primary Bronchi Lobar Bronchi Bronchioles Alveoli (air sacs).

walker
Download Presentation

The Respiratory System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Respiratory System

  2. Airflow Into The Body: 2 Passageways External Nares Nasal Cavity Nasopharynx Trachea Primary Bronchi Lobar Bronchi Bronchioles Alveoli (air sacs) Mouth Opening Oral Cavity Oropharynx Trachea Primary Bronchi Lobar Bronchi Bronchioles Alveoli (air sacs)

  3. larynx - voice box, supported by thyroid cartilage(adam's apple) + cricoid cartilage epiglottis - tongue-like structure that closes off larynx when we swallow trachea - "windpipe", supported by thoracic rings thoracic rings - "c" shaped cartilagenous rings, not completely circular to allow esophagus (located behind trachea) to expand when we swallow food, but enough stability to maintain an open passageway of the trachea regardless of pressure change during breathing

  4. The Digestive System Function: To mechanically + chemically process the foods we eat by breaking down food, absorbing the nutrients contained therein, + eliminating undigested food as waste

  5. Two primary sections: Digestive tract, alimentary canal or gastrointestinal (GI) tract - a muscular tube that extends from the mouth to the anus (~30ft long) Accessory organs - manufacture, store, or secrete fluids that contain water, enzymes, buffers, and other components that assist in preparing nutrients for absorption

  6. Digestive Tract: oral cavity oropharynx esophogus stomach  small intestines large intestines rectum

  7. Accessory Organs salivary glands - produce saliva, which contains digestive enzymes that begin the chemical breakdown of food

  8. Pancreas -contains exocrine cells that secrete buffers +digestive enzymes (also makes insulin)

  9. Liver - secretesbile (required for digestion of fats), stores nutrients and vitamins, and has many metabolic and regulatory functions

  10. Gall bladder - stores and concentrates bile received from the liver until needed in the small intestines (helps digest fat).

More Related