Body Systems FINAL (7/2)25

What is the primary function of the digestive system?

• To produce hormones

• To break down foods into substances that cells can use

• To fight pathogens

• To remove waste from the body

Where does digestion begin?

• In the liver

• In the stomach

• In the mouth

• In the small intestine

What is the length of the small intestine?

• 20-23 feet

• 25-30 feet

• 10-12 feet

• 15-18 feet

What substance does the liver secrete to aid in digestion?

• Gastric acid

• Saliva

• Bile

• Insulin

Food poisoning affects what body system?

• Digestive System

• Endocrine System

• Immune System

• Reproductive System

The kidneys, ureter, bladder, urethra, and the colon (large intestine) are part of the ___________.

• Excretory System

• Reproductive System

• Immune System

• Digestive System

• Endocrine System

What do the kidneys filter from the blood?

• Water and dissolved waste

• Carbon dioxide

• Nutrients

• Oxygen

What causes an ulcer in the stomach lining?

• Lack of exercise

• Bacteria and alcohol

• Excessive sugar intake

• Viruses

How does the endocrine system send messages to the body?

• Through nerves

• Through the blood in the form of hormones

• Through the digestive tract

• Through the skin

What are hormones?

• Waste products excreted by the body

• Chemical substances produced in glands

• Cells that fight infections

• Nutrients absorbed by the body