CAIE A-Level Biology 8.1.1 Closed Double Circulation
Practise defining closed and double circulation, then trace pulmonary flow between heart and lungs and systemic flow between heart and body tissues.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- define closed circulation through blood confined to vessels and the heart
- trace pulmonary circulation between the right heart, lungs and left heart
- trace systemic circulation between the left heart, body tissues and right heart
