9.1 - 2016 JUNe Q2 Answers
(a) Complete the passage using the correct word or words from the list. (8)
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The human heart consists of four chambers. The upper two chambers are called the .................................. and they ............................ blood from the veins. The lower chambers are the ......................................... . The right lower chamber pumps blood to the ......................................... , whilst the left lower chamber pumps blood to the ......................................... . The wall of the heart is made of ......................................... and the chamber with the thickest wall is the ......................................... . At rest, the average adult heart beats about ................................................... times a minute.
(b) The diagram shows a heart without any valves being drawn.
(b) The diagram shows a heart without any valves being drawn.
(i) Name the blood vessels A, B, C and D. (4)
A)
B)
C)
D)
(ii) The ventricles of the heart are relaxed and filling with blood.
Complete the diagram by drawing the two sets of valves on the left side of the heart as they would appear at this stage. (2)
(iii) Using label lines on the diagram, name the valves you have drawn. (2)
A)
B)
C)
D)
(ii) The ventricles of the heart are relaxed and filling with blood.
Complete the diagram by drawing the two sets of valves on the left side of the heart as they would appear at this stage. (2)
(iii) Using label lines on the diagram, name the valves you have drawn. (2)
Answers
