Lesson 2 - Anatomy

Question 1

Digestive Tract

Answer 1

This is where digestion takes place, it begins in the mouth and ends with the anus.

Question 2

Mouth

Answer 2

This ingests (takes in food) and is bounded externally by the lips and cheeks. Receives food; starts digestion of starch and it forms bolus. The mouths special features are the teeth and tongue.

Question 3

Pharynx

Answer 3

A passageway for the food to travel

Question 4

Esophagus

Answer 4

Another passageway for the food to travel

Question 5

Stomach

Answer 5

The stomach stores food; the acidity (HCL) kills bacteria; and the stomach starts the digestion of protein. The stomach releases gastric juices which is another one of its functions. Some of its special features the stomach has is gastric glands.

Question 6

Small Intestine

Answer 6

This digests all foods coming into it, and there is absorption of the nutrients. The small intestine also releases intestinal juices, and once again they absorb nutrients. It contains the duodenum, jejunum, the ileum and the villi.

Question 7

Duodenum

Answer 7

This is the first part of the small intestine. Secretions pour into it from the pancreas, liver, and gallbladder via the common bile duct. In other words, ducts from the liver and pancreas join to form one common bile duct that enters the duodenum.

Question 8

Jejunum

Answer 8

This is the middle part of the small intestine, and this does the majority of the break down of the food, and some absorption of the food.

Question 9

Ileum

Answer 9

This is also part of the middle part of the small intestine, and this does the majority of absorption, and some of the break down of the food. This occurs because it is near the end of the digestive tract, and when food gets near the end half of the food is already digested.

Question 10

Villi

Answer 10

This is the final touch of the small intestine. This contributes to the large surface area it has. This contains fingerlike projections called villi, which give the intestinal wall a soft, velvety appearance.

Question 11

Large Intestine

Answer 11

This absorbs water, salts, and some vitamins. It also stores indigestible material until it is eliminated as feces. This contains the cecum, the colon, rectum, and the anal canal.

Question 12

Cecum

Answer 12

Its a pouch that lies below the junction with the small intestine, which forms the first part of the large intestine.

Question 13

Colon

Answer 13

This is the longest part of the large intestine, extending from the cecum to the rectum. Water and electrolytes are absorbed, solidified, and prepared for elimination as feces in the colon.

Question 14

Rectum

Answer 14

This is the last 20cm of the large intestine. The rectum opens up to the anus, where the expulsion of feces occurs.