Page 100 - Hybrid PBD Sains TG3_Edisi Guru

Sains Tingkatan 3 Bab 3
C

4. Rajah di bawah menunjukkan tiga jenis salur darah manusia.
The diagram below shows three types of human blood vessels.

P
Q

(a) (i) Namakan salur darah P dan Q serta beri alasan berdasarkan struktur yang dapat anda perhatikan.
Name the blood vessel and give reason based on their structure observed.

P – Arteri; Mempunyai dinding yang lebih tebal dan berotot / Artery; Has thicker and muscular wall

Q – Vena; Mempunyai injap dan dinding yang lebih nipis / Vein; Has valves and thinner wall
[4 markah / 4 marks]

(ii) Bezakan tekanan darah dalam P dan Q.
Differentiate the blood pressure in P and Q.
Tekanan darah di P lebih tinggi berbanding Q / Blood pressure in is P higher than Q
[1 markah / 1 mark]

(b) Encik Saiful telah membuat pemeriksaan kesihatan di sebuah klinik.
Doktor telah memeriksa tekanan darah beliau. Rajah di sebelah
menunjukkan bacaan tekanan darah Encik Saiful yang direkodkan
oleh sfigmomanometer.
Encik Saiful went to see a doctor for health check at a clinic. The doctor had examined
his blood pressure. The diagram below shows the reading of his blood pressure that is
recorded by a sphygmomanometer.
(i) Apakah yang dimaksud oleh bacaan:
What is represented by the reading of:
Sistolik / Systolic (196):

Tekanan yang dikenakan oleh darah terhadap dinding salur darah semasa jantung mengecut.

The pressure imposed by the blood against the vessel wall during the heart contraction.

Diastolik / Diastolic (115):

Tekanan yang dikenakan oleh darah terhadap dinding salur darah semasa jantung dalam keadaan

rehat. / The pressure imposed by the blood against the vessel wall when the heart is at rest.
[2 markah / 2 marks]
(ii) Pada pendapat anda, adakah Encik Saiful mempunyai masalah kesihatan? Terangkan.
In your opinion, does Encik Saiful has health problem? Explain.
Ya. Tekanan darah tinggi. Tekanan darah normal ialah 120 / 180 mmHg.

Yes. High blood pressure. Normal blood pressure is 120 /180 mmHg.
[3 markah / 3 marks]

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