Roughage

Definition

Roughage, also known as dietary fiber, consists of indigestible plant material that aids in the movement of food through the digestive system. It is essential for maintaining bowel health and preventing constipation.

5 Must Know Facts For Your Next Test

1. Roughage includes both soluble and insoluble fibers found in vegetables, fruits, grains, and legumes.
2. Insoluble fiber adds bulk to stool and helps food pass more quickly through the stomach and intestines.
3. Soluble fiber dissolves in water to form a gel-like substance, which can help lower blood cholesterol and glucose levels.
4. Humans cannot digest roughage because they lack the necessary enzymes to break down cellulose.
5. Adequate intake of roughage is linked to a reduced risk of developing conditions like heart disease, diabetes, and colorectal cancer.

Review Questions

• What are the two types of fibers that make up roughage?
• How does insoluble fiber benefit the digestive system?
• Why can't humans digest roughage?

Related terms

Cellulose: A complex carbohydrate that forms the primary structural component of plant cell walls and is indigestible by humans.

Peristalsis: The series of wave-like muscle contractions that move food through the digestive tract.

Microbiota: The community of microorganisms living in the gastrointestinal tract that aids in digestion and overall health.