Digestive System Anatomy

Peristalsis

• Taking food into the mouth.

• The physical breakdown of food into smaller pieces through chewing or churning in the stomach.

• The chemicals which are found in food that the body needs for growth and repair of tissues.

• Smooth muscular movements which push the food along the digestive tract.

Which structure in the digestive system is primarily involved in the reabsorption of water?

• Small intestine

• Stomach

• Large intestine

• Liver

What are the functions of the digestive system? Select ALL that apply:

• Break down food into molecules the body can use

• Produce hormones that control body temperature and heart rate

• Absorb molecules into the blood to be transported around the body

• Eliminate wastes from the body

Gastroesophageal reflux disease (GERD) occurs when acid frequently back flows from the digestive organ that produces it into the esophagus causing a feeling of pain or “heartburn”. The symptoms of GERD are due to a disruption of homeostasis in which of the following digestive organs?

• pharynx

• pancreas

• small intestine

• stomach

Tags

NGSS.HS-LS1-3

The acid in our stomach is powerful enough to break down metals like aluminum, how does our stomach protect itself from the acid within it?

• Our stomachs are coated with a layer of mucus that protects its from the acid.

• Our stomachs are made of a special tissue that is resistant to acid.

• Our stomachs regenerate faster than the acids ability to break down tissue.

• Because it the stomach is basic.

Tags

NGSS.MS-LS1-3

A fluid in the mouth that helps digest food.

• pepsin

• pepsi

• saliva

• salty

Gastric juices in the stomach digest food into a thick liquid.  This is...

• Mechanical digestion

• Chemical digestion

Absorption

• The movement of molecules from the small intestine into the bloodstream.

• The process of absorbing and using nutrients in the body.

• Uses digestive juices and enzymes to break down food at the molecular level.

• The removal of waste from the body as feces.

The liver produces:

• bile

• ptyalin

• hydrochloric acid

What is the role of the pancreas in the digestive system?

• The pancreas absorbs nutrients from food

• The pancreas regulates body temperature

• The pancreas stores bile and releases it into the small intestine

• The pancreas produces digestive enzymes and regulates blood sugar levels.