6.2 The Transport system

IB Assessment Statements

• 6.2.1 Draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart (1)
• 6.2.2 State that coronary arteries supply heart muscle with oxygen and nutrients (1)
• 6.2.3 Explain the action of the heart in terms of collecting blood, pumping blood, and opening and closing of valves (3)
• 6.2.4 Outline the control of the heartbeat in terms of myogenic muscle contraction, the role of the pacemaker, nerves, the medulla of the brain and epinephrine (adrenaline) (2)
• 6.2.5 Explain the relationship between the structure and function of arteries, capillaries and veins (3)
• 6.2.6 State that blood is composed of plasma, erythrocytes, leucocytes (phagocytes and lymphocytes) and platelets (1)
• 6.2.7 State that the following are transported by the blood: nutrients, oxygen, carbon dioxide, hormones, antibodies, urea and heat (1)

—- 0O0 —- PPTs: 1 / 2 Articles: Websites:

• The Circulatory System – Maricopa
• The Circulatory System from BBC Bitesize
• Click4Biology
• The Cardiac Cycle from BioCoach
• Circulation Review from BiologyMad

Videos/Simulations:

• Heart Structure
• The Cardiac Cycle from Harvard (more details for Option H – HL)
• Conducing System of the Heart from McGraw Hill
• Circulatory System and the Heart (Khan Academy)
• Circulatory and Respiratory System Crash Course