Module 4 part 1

What is digestion?

Digestion is the process by which the body breaks down food into nutrients that can be absorbed into the bloodstream and used by cells for energy, growth, and repair.

What are the main macronutrients that must be digested?

The main macronutrients are carbohydrates, proteins, and fats.

What are the main components of the digestive system?

The digestive system consists of the digestive tract (GI tract) and accessory organs.

What are the parts of the digestive tract (GI tract)?

The digestive tract includes the mouth, pharynx, oesophagus, stomach, small intestine, and large intestine.

What is the role of the salivary glands in digestion?

The salivary glands produce saliva containing the enzyme salivary amylase, which begins breaking down carbohydrates.

What is the function of the liver in digestion?

The liver produces bile, which helps in the digestion and absorption of fats.

What does the pancreas secrete to aid digestion?

The pancreas secretes digestive enzymes and bicarbonate to neutralize stomach acid and break down carbohydrates, proteins, and fats.

What is the process of ingestion?

Ingestion is the process of taking food and liquid into the mouth

What is secretion in the digestive process?

Secretion is the release of digestive enzymes, acids, buffers, and water into the digestive tract to help break down food.

What is absorption?

Absorption is the uptake of digested nutrients, water, and electrolytes into the bloodstream or lymphatic system.

What is defecation?

Defecation is the elimination of undigested and unabsorbed materials from the body in the form of feces.