Digestion an Excretory system Test

Removal of waste products in the body is called ________________.

• respiration

• excretion

• circulation

• transpiration

Which type of digestion breaks down pieces of food into small molecules?

• mechanical digestion

• peristalsis digestion

• chemical digestion

• absorption digestion

The overall process of breaking down food so it can be used by the body is called ______________________.

• eating

• respiration

• circulation

• digestion

What is the function of peristalsis?

• to move food through the digestive system

• to remove excess liquid from the body

• to chemically digest food to release nutrients

• to absorb nutrients into the blood

When does the first step of digestion usually occur?

• when the organism discovers the food

• when the food is chewed

• when the food is swallowed

• when the nutrients are absorbed

Food enters the human body through the _____.

• esophagus

• intestine

• mouth

• liver

Digestion begins in the mouth with chewing and ______________ beginning to break down food.

• esophagus

• stomach

• liver

• saliva

Which of the following plays a role in the excretory system

• skin

• respiratory system

• kidneys

• all of the above

Absorption in the small intestines occurs through the walls of fingerlike projections called

• pharynx

• villi

• tongues

• hands

What is the function of kidneys?

• filter waste from blood

• digest food

• produce blood

• create oxygen