Environmental Science T5 The Circulatory & Nervous System of T

The atria in a turtle's heart receive blood from both the body and the lungs.

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How does the three-chambered heart of turtles improve efficiency compared to a two-chambered heart?

• It prevents the mixing of oxygenated and deoxygenated blood

• It separates oxygenated and deoxygenated blood better

• It allows for simultaneous systemic and pulmonary circulation

• It increases heart rate

What is the main difference between the heart structure of turtles and mammals?

• Turtles have a four-chambered heart, mammals have a three-chambered heart

• Turtles have a three-chambered heart, mammals have a four-chambered heart

• Turtles have a two-chambered heart, mammals have a three-chambered heart

• Both turtles and mammals have the same heart structure

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NGSS.MS-LS4-2

Why is the separation of oxygenated and deoxygenated blood incomplete in turtles?

• Because turtles have fewer blood vessels

• Due to the presence of only three heart chambers

• Because the turtle’s heart valves are missing

• Because their lungs are less developed

The aorta in a turtle's circulatory system is responsible for transporting oxygenated blood from the heart to the rest of the body.

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Pulmonary veins in turtles carry deoxygenated blood back to the heart.

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What is the purpose of systemic circulation in a turtle's body?

• To deliver deoxygenated blood to the heart

• To supply oxygenated blood to tissues throughout the body

• To remove waste from the brain

• To transport nutrients to the digestive system

How do aquatic turtles' circulatory systems adapt to prolonged submersion?

• By slowing their heart rate
  
  

• By pumping more oxygen to their brain

• By completely bypassing the lungs

• By increasing blood pressure

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NGSS.HS-LS1-3

A turtle's brain is highly specialized due to its complex control of sensory input, even though it is small in size.

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The turtle's cerebellum helps in processing sensory information.

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