Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Human Digestive System Diagram

This educational section comprehensively details the human digestive system, identifying and labeling the vital organs as depicted in the given anatomical diagram.

#### Labeled Organs:
- **a**: Nasal Cavity
- **b**: Oral Cavity (Mouth)
- **c**: Pharynx
- **d**: Esophagus
- **e**: Liver
- **f**: Gallbladder
- **g**: Stomach
- **h**: Pancreas
- **i**: Duodenum
- **j**: Small Intestine
- **k**: Cecum
- **l**: Appendix
- **m**: Rectum
- **n**: Nostril
- **o**: Epiglottis
- **p**: Diaphragm
- **q**: Transverse Colon
- **r**: Ascending Colon
- **s**: Descending Colon
- **t**: Sigmoid Colon
- **u**: Anal Canal
- **v**: Anus
- **w**: Appendix (repeated label, possibly an error in the diagram)

### Functionality and Explanation of Major Organs:

1. **Nasal and Oral Cavities (a & b)**:
   - Act as entry points for air (nasal cavity) and food (oral cavity) respectively.
   
2. **Pharynx (c)**:
   - A muscular tube that directs food from the mouth to the esophagus.

3. **Esophagus (d)**:
   - A muscular tube that transports food from the pharynx to the stomach.

4. **Liver (e)**:
   - Produces bile, which helps in the digestion of fats.

5. **Gallbladder (f)**:
   - Stores and concentrates bile from the liver.

6. **Stomach (g)**:
   - Secretes acid and enzymes that digest food. It churns food into a semi-liquid form called chyme.

7. **Pancreas (h)**:
   - Produces digestive enzymes and bicarbonate, which are released into the small intestine. It also regulates blood sugar by producing insulin.

8. **Duodenum (i)**:
   - The first section of the small intestine, where most chemical digestion occurs.

9. **Small Intestine (j)**:
Transcribed Image Text:### Human Digestive System Diagram This educational section comprehensively details the human digestive system, identifying and labeling the vital organs as depicted in the given anatomical diagram. #### Labeled Organs: - **a**: Nasal Cavity - **b**: Oral Cavity (Mouth) - **c**: Pharynx - **d**: Esophagus - **e**: Liver - **f**: Gallbladder - **g**: Stomach - **h**: Pancreas - **i**: Duodenum - **j**: Small Intestine - **k**: Cecum - **l**: Appendix - **m**: Rectum - **n**: Nostril - **o**: Epiglottis - **p**: Diaphragm - **q**: Transverse Colon - **r**: Ascending Colon - **s**: Descending Colon - **t**: Sigmoid Colon - **u**: Anal Canal - **v**: Anus - **w**: Appendix (repeated label, possibly an error in the diagram) ### Functionality and Explanation of Major Organs: 1. **Nasal and Oral Cavities (a & b)**: - Act as entry points for air (nasal cavity) and food (oral cavity) respectively. 2. **Pharynx (c)**: - A muscular tube that directs food from the mouth to the esophagus. 3. **Esophagus (d)**: - A muscular tube that transports food from the pharynx to the stomach. 4. **Liver (e)**: - Produces bile, which helps in the digestion of fats. 5. **Gallbladder (f)**: - Stores and concentrates bile from the liver. 6. **Stomach (g)**: - Secretes acid and enzymes that digest food. It churns food into a semi-liquid form called chyme. 7. **Pancreas (h)**: - Produces digestive enzymes and bicarbonate, which are released into the small intestine. It also regulates blood sugar by producing insulin. 8. **Duodenum (i)**: - The first section of the small intestine, where most chemical digestion occurs. 9. **Small Intestine (j)**:
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