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Question
What is a heartbeat? Name the instrument used by doctors to listen to the heartbeat? How does it work? [3 MARKS]
What is a heartbeat? Name the instrument used by doctors to listen to the heartbeat? How does it work? [3 MARKS]
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Solution
Process: 1 Mark
Instrument: 1 Mark
Working: 1 Mark
The walls of the chambers of the heart are made up of muscles. These muscles contract and relax rhythmically. The rhythmic contraction of muscles is followed by its relaxation. This constitutes a heartbeat.
The doctors use a stethoscope to listen to the heartbeat. It amplifies the sound of the heartbeats which makes it easier for the doctors to listen.
Process: 1 Mark
Instrument: 1 Mark
Working: 1 Mark
The walls of the chambers of the heart are made up of muscles. These muscles contract and relax rhythmically. The rhythmic contraction of muscles is followed by its relaxation. This constitutes a heartbeat.
The doctors use a stethoscope to listen to the heartbeat. It amplifies the sound of the heartbeats which makes it easier for the doctors to listen.
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