Question

1. Digestive System Anatomy

   1. In order, name each organ and sphincter a piece of food travels through as it goes from plate, through the digestive system, and into the toilet.

   2. Identify each of the accessory digestive organs and their function.

Answer 1

Answer

Pathway of food in digestive tract :

1. Mouth
2. Pharynx
3. Esophagus
4. Cardiac sphincter
5. Stomach
6. Pyloric sphicnter
7. Small intestine : Duodenum Jejunum Ileum
8. Ileocecal valve / sphincter
9. Large intestine : Cecum Ascending colon Transverse colon Descending colon Sigmoid colon
10. Rectum
11. Anal canal
12. Anal opening Out of the body.

Accessory digestive organs :

There are 4 accessory digestive organs :

1) Salivary glands
- They secrete saliva containing salivary amylase into the oral cavity.
- Salivary amylase acts on starch and convert it to disaccharides.

2) Liver
- Liver produces bile.
- Bile helps in emulsification of fat molecules before its chemical breakdown.

3) Gallbladder
- Gallbldder stores bile.
- It transport bile to common bile duct via cystic duct.

4) Pancreas
- Pancreas produce pancreatic juice contains enzymes for digestion of all macronutrients.
- It produce zymogens (inactive enzymes) to protect lining of pancreatic wall from being digested. These zymogens gets activated when they reach duodenum.