"Two hearts" during physical effort

• Irish Curriculum
• Junior Cycle
• Biology
• I. Human Biology – food, digestion and associated body systems
• 5 Circulatory system

• Irish Curriculum
• Senior Cycle
• Biology
• Ordinary level
• III. The organism
• 2. Organisation and the vascular structures
• Higher level
• III. The organism
• 2. Organisation and the vascular structures

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