Digestion, Absorption, and Transport (Part 2)

Which absorption process requires membrane proteins to transport nutrients passively down a concentration gradient from one side of the cell to another?

• Active transport

• Simple diffusion

• facilitated transport

• digestive diffusion

This cell secretes mucus to protect and lubricate the small intestine.

• Villi cell

• Goblet cell

• Crypt cell

• Mucin cell

People should not eat certain food combinations (e.g., fruit and meat) because the digestive system cannot handle multiple foods consumed at once.

• True

• False

The heart serves as a pump for this system.

• Digestive system

• Lymphatic system

• Muscular system

• Vascular system

The vein directs blood from the digestive system to the liver.

• Aorta

• Hepatic vein

• Hepatic portal vein

• Pulmonary vein

Which of the following factors influences gastrointestinal microbiota?

• Diet

• Stress

• pH

• Peristalsis

• All of the above

What are food components (e.g., fiber) not digested by the human body but are used as food by gastrointestinal bacteria?

• Prebiotics

• Probiotics

• Flora

• Chow

The ability of the digestive tract to handle its ever-changing contents and maintain a constant internal condition is known as the principle of _________________.

• Digestion

• Peristalsis

• Consistency

• Homeostasis

When food enters the stomach this hormone stimulates stomach glands to secrete hydrochloric acid (HCL).

• Secretin

• Pepsin

• Cholecystokinin

• Gastrin

What lifestyle factors influence the health of the digestive system?

• Sleep

• Stress

• Physical Activity

• Diet

• All of the above