Identify the secretions of the small intestine. Select all that apply.Multiple select question.SucraseMucusPeptidaseLipasesBicarbonate ionsHydrochloric acid

To address the secretions of the small intestine, we need to identify which of the provided options are actually secreted by the small intestine itself.

1. Sucrase: This is an enzyme that breaks down sucrose into glucose and fructose. It is secreted by the small intestine.

2. Mucus: The small intestine secretes mucus to protect its lining and aid in the movement of food.

3. Peptidase: These enzymes, which include dipeptidases and aminopeptidases, help in protein digestion and are secreted by the small intestine.

4. Lipases: These enzymes are responsible for breaking down fats and are also secreted by the small intestine.

5. Bicarbonate ions: These are secreted by the pancreas into the small intestine to neutralize stomach acid, but are not directly secreted by the small intestine.

6. Hydrochloric acid: This is secreted by the stomach, not the small intestine.

Secretions of the Small Intestine:

• Sucrase
• Mucus
• Peptidase
• Lipases

Not Secreted by the Small Intestine:

• Bicarbonate ions (secreted by the pancreas)
• Hydrochloric acid (secreted by the stomach)

Final Answer

The secretions of the small intestine include: Sucrase, Mucus, Peptidase, and Lipases.