Digestive System Concepts Assessment

The video provides an in-depth look at the digestive system, covering its main functions, structures, and processes. It explains how food is broken down into energy and nutrients, detailing the roles of various organs and tissues. The digestive process is broken into steps like ingestion, propulsion, and absorption. The video also discusses the enzymes involved in digestion and how the process is regulated by the nervous and endocrine systems.

What is the primary function of the digestive system?

• To convert food into energy and raw materials

• To transport oxygen to cells

• To produce hormones

• To filter waste from the blood

Which of the following is NOT a part of the alimentary canal?

• Esophagus

• Stomach

• Liver

• Small intestine

What is the term for the ball of chewed food that is swallowed?

• Mucus

• Enzyme

• Chyme

• Bolus

Which step of digestion involves the physical breakdown of food?

• Ingestion

• Propulsion

• Mechanical breakdown

• Chemical digestion

What is the role of the mucosa layer in the GI tract?

• To protect against abrasive foods

• To secrete mucus, enzymes, and hormones

• To aid in peristalsis

• To provide elasticity and flexibility

Which type of epithelial cells line the stomach and intestines?

• Stratified squamous epithelial cells

• Transitional epithelial cells

• Cuboidal epithelial cells

• Simple columnar epithelial cells

Which enzyme is responsible for starting the digestion of starches in the mouth?

• Lipase

• Protease

• Pepsin

• Amylase

What is the function of bile salts in digestion?

• To neutralize stomach acid

• To break down proteins

• To digest carbohydrates

• To emulsify fats

Which hormone is released by G cells to increase HCl secretion?

• Gastrin

• Serotonin

• Histamine

• Insulin

What is the role of the enteric nervous system?

• To filter waste from the blood

• To control voluntary muscle movements

• To regulate activities of the digestive system

• To produce digestive enzymes