21.2A Total C

What is the primary function of the excretory system?

• To produce hormones
• To eliminate metabolic wastes from the body
• To transport oxygen throughout the body
• To digest nutrients from food

What is the first step in the digestive process?

• Mechanical digestion
• Chemical digestion
• Ingestion
• Absorption

Which system is responsible for breaking apart food into molecules that cells can use?

• circulatory system
• digestive system
• excretory system
• lymphatic system
• respiratory system

Which system is responsible for eliminating metabolic wastes from the body?

• circulatory system
• digestive system
• excretory system
• lymphatic system
• respiratory system

Which system is responsible for delivering food and oxygen to cells, and removing wastes?

• circulatory system
• digestive system
• excretory system
• lymphatic system
• respiratory system

Which system is responsible for “screening” fluids for microorganisms, and returning fluids to the blood?

• circulatory system
• digestive system
• excretory system
• lymphatic system
• respiratory system

Which system is responsible for delivering oxygen to the blood, and removing carbon dioxide?

• circulatory system
• digestive system
• excretory system
• lymphatic system
• respiratory system

Where does mechanical digestion first occur in the digestive system?

• Stomach
• Mouth
• Small intestine
• Esophagus

What is the term for the mass of food after it has been chewed and mixed with saliva?

• Chyme
• Bolus
• Feces
• Villi

Which organ completes the chemical digestion process?

• Small intestine
• Large intestine
• Stomach
• Esophagus