Digestive System
What 2 secretions does it produce?
1. Produces pancreatic juices.
What is the wavelike involuntary movement of muscles that causes the food to move in a forward direction through the digestive tract?
Peristalsis
List 3 functions of the large intestine.
1. Absorption of water. 2. Storage of indigestible materials. 3. Transportation of waste products.
Name the 4 divisions of the colon.
1. Ascending colon. 2. Transverse colon. 3. Descending colon. 4. Sigmoid colon.
List 2 functions of the tongue.
1. Containment of taste buds that allow a person to taste sweet, salt, sour, and bitter sensations. 2. Aid in chewing and swallowing food.
List 4 things that happen in the stomach during digestion.
1. Rugae disappear 2. Stomach expands 3. Cardiac sphincter closes after food enters 4. Food is converted to chyme
List 5 functions of the liver.
1. Secretes bile. 2. Stores sugar. 3. Stores iron and certain vitamins. 4. Produces heparin. 5. Detoxifies substances.
What is the function of lipase and steapsin in the small intestine?
Acts on digesting fats
What is the function of trypsin in the small intestine?
Acts on digesting proteins
What is the function of maltase in the small intestine?
Break down simple sugars.
What is the function of sucrase in the small intestine?
Break down simple sugars.
What is the function of peptidases in the small intestine?
Complete the digestion of proteins and steapsin
What is the function of bile in the small intestine?
Emulsifies fats (breaks down)
Fill in the blanks.
Fingerlike projections in the small intestine, called VILLI, contain BLOOD CAPILLARIES and LACTEALS. The blood capillaries absorb most of the DIGESTED NUTRIENTS while the lacteals absorb most of the digested FATS.
What is the glandular organ behind the stomach?
The pancreas.
What is mastication?
The process of breaking down, lubricating, and swallowing food.
Fill in the blanks.
Three pairs of salivary glands, the PAROTID, SUBLINGUAL, and the SUBMANDIBULAR produces saliva that LUBRICATES the mouth during speech and chewing and moistens food so it can be swallowed easily. Saliva also contains an enzyme called SALIVARY AMYLASE, which begins he chemical breakdown of CARBOHYDRATES or STARCHES. After the food is chewed and mixed with saliva, it is called a/an BOLUSTES.
What is the function of the gallbladder?
To store and concentrate bile and the gallbladder contracts and pushes the bile through the common bile duct and into the duodenum.
