Animal Structures and Functions Quiz

What is the main function of the respiratory system in animals?

• Regulate body temperature

• Produce hormones

• Digest food

• Facilitate gas exchange

Which organ is responsible for pumping blood in the circulatory system of animals?

• lungs

• stomach

• heart

• brain

What is the process called when food is broken down into simpler substances in the digestive system of animals?

• excretion

• respiration

• absorption

• digestion

Which system is responsible for transmitting signals between different parts of the body in animals?

• nervous system

• digestive system

• respiratory system

• circulatory system

What is the primary function of the skeletal system in animals?

• Digestion, absorption, and elimination

• Support, protection, and movement

• Respiration and gas exchange

• Reproduction and sexual development

Which organ in the respiratory system is responsible for the exchange of oxygen and carbon dioxide?

• liver

• stomach

• lungs

• heart

What is the name of the largest artery in the circulatory system of animals?

• vein

• capillary

• arteriole

• aorta

Which organ in the digestive system absorbs nutrients from the food?

• esophagus

• small intestine

• stomach

• liver

What is the main function of the brain in the nervous system of animals?

• Pump blood throughout the body

• Produce hormones for growth and development

• Digest food and absorb nutrients

• Process and coordinate information, control body functions, and enable cognitive abilities.

Which type of bone cells are responsible for breaking down old bone tissue?

• osteoclasts

• osteoblasts

• osteocytes

• chondrocytes