Question

Which are organs of the digestive system? Check all that apply.

rectum
lungs
heart
esophagus
large intestine
liver

Answer 1

The organs of the digestive system from your list are:

- Rectum
- Esophagus
- Large intestine
- Liver

The lungs and heart are not part of the digestive system.

Answer 2

Which part of the mouth carries out each function?

breaks down carbohydrates into sugars: ___

cuts up food into smaller pieces: ___

teeth saliva or both? pick one for each blank

Answer 3

Here are the parts of the mouth that carry out each function:

1. Breaks down carbohydrates into sugars: **saliva**
2. Cuts up food into smaller pieces: **teeth**

Answer 4

What happens to food in the small intestine? Check all that apply.

Food is cut into smaller pieces.
Blood in the villi helps to absorb nutrients and sugar molecules.
Nutrients from food are absorbed.
Food is squeezed and made watery.
Fat is broken down into smaller droplets.

Answer 5

In the small intestine, the following occurs:

- **Blood in the villi helps to absorb nutrients and sugar molecules.**
- **Nutrients from food are absorbed.**
- **Food is squeezed and made watery.**
- **Fat is broken down into smaller droplets.**

The statement "Food is cut into smaller pieces" generally occurs in the mouth and stomach, not specifically in the small intestine.

Answer 6

Blood in the villi helps to absorb nutrients and sugar molecules.
Nutrients from food are absorbed.
Fat is broken down into smaller droplets.



What is one of the main functions of the large intestines?

break down food chemically
break down food physically
absorb nutrients
absorb water

Answer 7

One of the main functions of the large intestine is to **absorb water**.

Answer 8

What is the waste material liquid that is formed in the kidneys?

Answer 9

The waste material liquid that is formed in the kidneys is called **urine**.

Answer 10

Bladder

Urethra

Kidney

Nephron

Ureter

Descriptions:

Filter of waste material from blood.

Functional unit of kidney.

Temporary storage place for urine.

Tube that carries urine from kidneys to bladder.

Exit way of urine from body.


Match the description to the structure.

Answer 11

Here are the matches for each structure and description:

1. **Kidney**: Filter of waste material from blood.
2. **Nephron**: Functional unit of kidney.
3. **Bladder**: Temporary storage place for urine.
4. **Ureter**: Tube that carries urine from kidneys to bladder.
5. **Urethra**: Exit way of urine from body.