Digestive System Grade 5

After eating a meal, the digestive process involves multiple organs working together to break down the food and absorb nutrients. The organ which is primarily responsible for churning and mixing food with digestive acids in the process of breaking down food shown on organ number ....

• 5

• 1

• 3

• 7

Organ 6 plays a vital role in the digestive process and blood sugar regulation. The primary function of the organ 6 in digestion is to ....

• produce bile to break down fats.

• secrete digestive enzymes that help break down carbohydrates, proteins, and fats in the small

  intestine.

• absorb nutrients directly into the bloodstream.

• filter toxins from the blood.

The first section of the small intestine plays a crucial role in preparing digested food for nutrient

absorption by mixing it with digestive juices from the pancreas and bile from the liver. This part of the small intestine is known as ....

• ileum

• cecum

• jejunum

• duodenum

After food passes through the initial section of the small intestine, it moves into the next part, where

the majority of nutrient absorption takes place due to its lining rich in villi and microvilli. This part

of the small intestine is called ....

• duodenum

• ileum

• jejunum

• cecum

The last part of the small intestine is responsible for absorbing vitamin B12, bile salts, and any

remaining nutrients before the contents move into the large intestine. This final section is called ....

• ileum

• duodenum

• jejunum

• cecum

As food enters the small intestine, an enzyme is released that specifically targets fats, breaking them down into fatty acids and glycerol for absorption. The name of this enzyme is ....

• erepsin

• pepsin

• ptyalin

• lipase

Proteins are initially broken down in the stomach, but further digestion occurs in the small intestine, where an enzyme continues to break proteins into smaller peptides and amino acids. The name of this enzyme is ....

• ptyalin

• trypsin

• bile

• lipase

This digestive juice, produced by the liver and stored in the gallbladder, is not an enzyme but is essential for fat digestion as it emulsifies fats, breaking them into smaller droplets. This substance is called ....

• bile

• erepsin

• pepsin

• trypsin

The correct order of the digestion process is ....

• 3-4-2-1-5-6

• 3-4-2-5-1-6

• 3-5-4-2-1-6

• 3-4-1-2-5-6

The example of mechanical digestion and chemical digestion is ....

• the mixing of food in the stomach (chemical digestion) and the absorption of nutrients in the small

  intestine (mechanical digestion).

• chewing food in the mouth (mechanical digestion) and the breakdown of proteins by pepsin in

  the stomach (chemical digestion).

• the action of bile emulsifying fats in the small intestine (mechanical digestion) and the breakdown

  of starch by amylase in the mouth (chemical digestion).

• the movement of food through the esophagus by peristalsis (mechanical digestion) and the

  breakdown of lipids by lipase in the stomach (chemical digestion).