Photo AI
The diagram shows a human heart - Edexcel - GCSE Biology - Question 3 - 2016 - Paper 1
Question 3
The diagram shows a human heart. (a) (i) Complete the sentence by putting a cross (X) in the box next to your answer. The part labelled X in the diagram is the A... show full transcript
Worked Solution & Example Answer:The diagram shows a human heart - Edexcel - GCSE Biology - Question 3 - 2016 - Paper 1
Step 1
Step 2
Describe the role of the valve labelled in the diagram.
Answer
The valve plays a crucial role in the heart's functioning. It has two primary functions:
-
Open and Close: The valve opens to allow blood to flow from the atrium to the ventricle and closes to prevent backflow. This ensures proper circulation of blood within the heart.
-
Prevent Backflow: By closing when the ventricle contracts, the valve prevents blood from flowing back into the atrium, maintaining efficient blood flow through the heart.