diff --git a/education/nutrition/Digestive System.md b/education/nutrition/Digestive System.md
index 69b7e88..9a0e593 100644
--- a/education/nutrition/Digestive System.md	
+++ b/education/nutrition/Digestive System.md	
@@ -24,6 +24,13 @@ Absorption is the uptake and removal of nutrients from the digestive tract.
 	1. The stomach is a muscular sac that stores and mixes food
 	2. Gastric glands located in the stomach synthesize and secrete gastric juice
 		1. Gastric juice is a mix of mucus, hydrochloric acid, intrinsic factor, and digestive enzymes
+			1. Mucus cells secrete mucus to protect the lining of the stomach from the acid
+		2. Parietal cells secrete intrinsic factor and the components of hydrochloric acid into the lumen of the stomach
+			1. Intrinsic factor is a substance necessary for absorbing vitamin B-12
+		3. Chief cells secrete some chemically inactive digestive enzymes
+			1. Pepsinogen
+			2. Gastric lipase
+		4. G cells secrete gastrin - A hormone that stimulates stomach motility and gastric gland secretions
 4. Small intestine (DJI)
 	1. Duodenum
 	2. Jejunum
@@ -39,7 +46,7 @@ Sphincters are thickened regions of circular muscle that control the flow of con
 - Essential for normal digestion and absorption
 There are 3 main sphincters associated with digestion:
 1. Gastroesophageal/lower esophageal/cardiac - connects the esophagus to the stomach
-2. Pyloric - connects the stomach to the duodenum (small intestine)
+2. Pyloric - connects the stomach to the duodenum (small intestine) and regulates the flow of chyme
 3. ileocecal valve - Connects the small intestine to the large intestine
 The upper esophageal sphincter is at the top of the esophagus (not as important).
 
@@ -54,6 +61,8 @@ Chemical digestion refers to the breakdown of large molecules in food into small
 
 
 # Definitions
-| Phrase | Definition                                    |
-| ------ | --------------------------------------------- |
-| Lumen  | The open space inside of the digestive system |
+| Phrase   | Definition                                                                                   |
+| -------- | -------------------------------------------------------------------------------------------- |
+| Lumen    | The open space inside of the digestive system                                                |
+| Chyme    | A semiliquid mass that forms when food mixes with gastric juice. Occurs in the lower stomach |
+| Motility | The ability of an organism to move independently                                             |