Page 22 - e book prim 6
P. 22
Delta Modern Language Schools
Science department
Grade 6
1st term 2024- 2025
2 Circulatory System
• Structure:
Circulatory system
Heart Blood vessels
Arteries Veins Blood capiilaries
➢ Heart muscle : - Pumps the blood to all body cells
➢ Blood vessels: - Allow blood to flow throughout the body.
❶ Arteries. ❷Veins. ❸Blood capillaries.
Function:
It transports blood, gases, nutrients and hormones (secreted by endocrine
system) throughout the body.
Its role during danger:
1) The heartbeats increase causing:
2) The heart pumps more blood to the muscles, the heart and the
other organs.
3) The blood pressure increases.
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