[Campbell Biology P.974] In most vertebrates, including reptiles and mammals, the circuit wh... | Practice Question

In most vertebrates, including reptiles and mammals, the circuit where gas exchange takes place in the lungs is called the . For many amphibians, where gas exchange occurs in both lungs and skin, it is called the .

  • A: pulmonary circuit; pulmocutaneous circuit
  • B: systemic circuit; pulmonary circuit
  • C: pulmocutaneous circuit; systemic circuit
  • D: pulmonary circuit; systemic circuit

Explanation

The text defines the pulmonary circuit as the one where gas exchange occurs in the lungs for most vertebrates reptiles and mammals . For amphibians, where gas exchange also happens in the skin, it's called the pulmocutaneous circuit. The systemic circuit delivers oxygenated blood to the rest of the body.