Chapter 5 / 9 short lessons
Transport in humans
Trace blood through the body and explain how vessels, blood and the heart keep cells supplied.
G3 Pure Biology / K325 / 2027 syllabus
What do you think?
The pulmonary artery carries blood with relatively little oxygen. Why is it still an artery?
Lessons
0 of 9 marked as readBlood vessels and circulation routes
Trace the main vessels linking the heart, lungs, liver and kidneys.
About 5 minArteries, veins and capillaries
Explain vessel structures using pressure, return flow and exchange distance.
About 4 minExchange between blood and body cells
Explain exchange between capillaries, tissue fluid and cells.
About 5 minWhat blood carries
Match oxygen and other transported materials to the relevant blood component.
About 4 minImmune defence and blood clotting
Explain phagocytosis, antibodies, tissue rejection and blood clotting.
About 5 minABO groups and transfusion
Work out every ABO donor-recipient combination from antigens and antibodies.
About 5 minThe four-chambered heart
Relate chambers, septum, muscular walls and valves to one-way pumping.
About 5 minThe cardiac cycle
Explain filling and ejection through systole, diastole and pressure changes.
About 5 minCoronary arteries and heart disease
Connect coronary narrowing, reduced oxygen supply and risk factors.
About 4 minWhat you will be able to do
- Trace named vessels and connect their structure to their job.
- Explain exchange with cells, blood defence and ABO compatibility.
- Use pressure and valves to explain a heartbeat.
- Connect reduced coronary blood flow to reduced oxygen delivery.
Spaced review
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