Explore
Learn: The Heart and Blood Vessels
Edexcel A Level Biology SNAB A
Ready to start this lesson?
Sign in to track your progress. 16 steps including 7 interactive questions.
Sign In to Start Learning
Students also studied
Browse allSteps in this lesson (16)
Welcome!Today we'll be learning about the heart and blood vessels. These are central to the circulatory system, transporting oxygen and nutrients throughout the body. Let's get started!
What is the circulatory system?The circulatory system is responsible for delivering oxygen, nutrients, and hormones to cells and removing waste products like carbon dioxide. It includes the heart, blood vessels, and blood.
The Heart: Structure and FunctionThe heart is a muscular organ that pumps blood around the body. It has four chambers: the left and right atria (upper chambers) and the left and right ventricles (lower chambers). The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs.
Which chamber of the heart pumps oxygenated blood to the body?
Start the lesson to answer this multiple choice question
Blood Vessels: Types and RolesThere are three main types of blood vessels: arteries, veins, and capillaries. Arteries carry blood away from the heart, veins return blood to the heart, and capillaries are small vessels where exchange of substances occurs.
Which of the following are true about arteries? (Select all that apply)
Start the lesson to answer this multi-select question
Capillaries: Exchange of SubstancesCapillaries are the smallest blood vessels. Their thin walls allow oxygen, nutrients, and waste products to move between the blood and tissues. This exchange is crucial for maintaining homeostasis.
Valves in VeinsValves in veins prevent blood from flowing backwards. This is especially important in the lower body, where blood must flow against gravity to return to the heart.
Veins contain {{blank0}} to prevent {{blank1}} of blood.
Start the lesson to answer this fill in the blank question
Blood Flow PathwayBlood flows through the heart in a specific pathway: deoxygenated blood enters the right atrium, then moves to the right ventricle. It is pumped to the lungs for oxygenation, returns to the left atrium, and is pumped to the body by the left ventricle.
Match the items on the left with their correct pairs on the right
Start the lesson to answer this matching question
Review Time!Great work! You've learned about the heart, blood vessels, and their roles. Now let's test your understanding with a few questions.
Which blood vessel is responsible for substance exchange?
Start the lesson to answer this multiple choice question
Which of the following correctly describe the circulatory system? (Select all that apply)
Start the lesson to answer this multi-select question
Match the items on the left with their correct pairs on the right
Start the lesson to answer this math equation question
Congratulations!You’ve completed the lesson on the heart and blood vessels. Great job reviewing the circulatory system's key features and functions!
Want to Learn More?
Get personalised lessons, quizzes, and instant feedback from your AI tutor.
Explore More Topics