circulatory system (grade 10 Life sciences)

1. THE CIRCULATORY SYSTEM

2. FUNCTIONS/ IMPORTANCES OF THE
CIRCULATORY SYSTEM:
• FUELS THE BODY (OXYGEN AND NUTRITION)
• REMOVES METABOLIC WASTE (CARBON DIOXIDE)
• FIGHT DISEASES (ANTIBODIES)

3. COMPONENTS OF THE CIRCULATORY
SYSTEM:
• HEART
• BLOOD VESSELS
• BLOOD
• LUNGS
• BODY CELLS

4. THE HEART
FUNCTIONS
• THE HEART CIRCULATES BLOOD
AROUND THE BODY ( MILLER, 2017).
• THE RIGHT SIDE PUMPS
DEOXYGENATED BLOOD (CONTAINS
CARBON DIOXIDE).
• THE LEFT SIDE PUMPS
OXYGENATED BLOOD (CONTAINS
OXYGEN).

5. BLOOD VESSELS
ARTERIES
• TRANSPORTS
DEOXYGENATED BLOOD
AWAY FROM THE HEART.
VEINS
• TRANSPORTS OXYGENATED
BLOOD INTO THE HEART.
CAPILLARIES
• SMALLEST BLOOD VESSELS
THAT CARRY BLOOD FROM
ARTERIES TO BODY CELLS
AND LATER TO THE VEINS.

6. THE DOUBLE CIRCULATION

7. DOUBLE CIRCULATION (EXPLAINED!!!!)
• LINK TO THE DOUBLE CIRCULATION TUTORIAL:
HTTPS://YOUTU.BE/CTMEETQ0RYQ

8. PULSE RATE
• IS THE NUMBER OF HEARTBEATS PER MINUTE (BPM).
• A HEALTHY ADULT HAS 60-100 BEATS PER MINUTE (BPM).
• DURING A STRENUOUS ACTIVITY, THE BPM IS EXPECTED TO RISE EVEN ABOVE
100 BEATS PER MINUTE.

9. CARDIOVASCULAR DISEASES
• CORONARY HEART DISEASE- OCCURS BY A BLOCKED BLOOD FLOW IN THE
ARTERIES, DUE TO FATTY DEPOSITS.
• STROKE- OCCURS WHEN THE BLOOD SUPPLY TO THE BRAIN IS CUT OFF. IT
CAN LEAD TO BRAIN DAMAGE AND DEATH.
• PERIPHERAL ARTERIAL DISEASE- OCCURS WHEN THE ARTERIES IN THE
LIMBS ARE BLOCKED, CAUSING PAIN IN THOSE LIMBS.

10. REFERENCES:
1. MILANOI, D. (2016). UNDERSTANDING THE FACTS ABOUT CARDIOVASCULAR DISEASES. AVAILABLE FROM SLIDESHARE AT
HTTPS://WWW.SLIDESHARE.NET/DAPHNEMILANOI/UNDERSTANDING-CARDIOVASCULAR-DISEASES?QID=7A82170D-AA2E-4E61-A2B0-
38DF73459641&V=&B=&FROM_SEARCH=4 (ACCESSED 25 AUGUST 2021).
2. ARUNA, O. (2020). CARDIOVASCULAR DISEASES. . AVAILABLE FROM SLIDESHARE AT
HTTPS://WWW.SLIDESHARE.NET/OVYAPA/CARDIOVASCULAR-DISEASES-239876692?QID=8185862C-1B31-4EED-9077-
A1B375E9ACC1&V=&B=&FROM_SEARCH=8 (ACCESSED 25 AUGUST 2021).
3. BAKER, C. (2014). CIRCULATORY SYSTEM. . AVAILABLE FROM SLIDESHARE AT HTTPS://WWW.SLIDESHARE.NET/CBAKER745/CIRCULATORY-
SYSTEM-42846936?QID=148D401A-57E7-45FE-81D3-D4CD2ADB8DFE&V=&B=&FROM_SEARCH=1 (ACCESSED 25 AUGUST 2021).
4. MILLER, T. (2017). THE STRUCTURE AND FUNCTION OF THE HEART. . AVAILABLE FROM SLIDESHARE AT
HTTPS://WWW.SLIDESHARE.NET/TESSMILLER519/THE-STRUCTURE-AND-FUNCTION-OF-THE-HEART?QID=2E1773F3-4E4E-42D4-ADCF-
84F113A0521B&V=&B=&FROM_SEARCH=2 (ACCESSED 25 AUGUST 2021).
5. RIAZ, A. (2017). HEART RATE, RESPIRATORY RATE, RESPIRATORY VOLUME AND CAPACITIES. . AVAILABLE FROM SLIDESHARE AT
HTTPS://WWW.SLIDESHARE.NET/ASIFRIAZ22/HEART-RATE-PULSE-RATE?QID=6FA9DED9-DC37-47AD-A5F4-
B45694A1EDDE&V=&B=&FROM_SEARCH=5 (ACCESSED 25 AUGUST 2021).