1. Aim: How does blood help us to complete transport throughout our bodies?
Do Now:
When you scrape
your leg blood flows from the wound. hypothesize how you stop bleeding.
HW: Castle learning

2. ARTERY: Highly elastic, muscular tube that expands and contracts.
3 TYPES OF BLOOD VESSELS
ARTERY:
Highly elastic,
muscular tube
that expands
and contracts.
*Carries oxygen rich blood (oxygenated)

3. VEIN: *Thin, slightly elastic tubes. *Contain valves to
3 TYPES OF BLOOD VESSELS
VEIN:
*Thin, slightly
elastic tubes.
*Contain valves to
prevent back flow
of blood
Carries deoxygenated blood to the heart

4. Capillary: Extremely small tubes (1 cell thick), where materials are
3 TYPES OF BLOOD VESSELS
Capillary:
Extremely small
tubes (1 cell
thick), where
materials are
exchanged by
diffusion
Capillaries connect arteries to veins
Network Of
Capillaries
artery
vein

5. “Blood is thicker than
Water ”

6. Group of cells (connective tissue)
BLOOD
Group of cells (connective tissue)
Made in bone marrow.
Initial blood cells are called stem cells.
Functions of blood:
Transportation: O2, CO2, nutrients
Regulation: fight disease, remove waste, carry hormones, temp., pH
Protection: clotting & against disease

7. Blood Components

8. Red Blood Cells
Platelets
White Blood Cells

9. a fluid, no cells Liquid portion of blood contains: 90% water
PLASMA
a fluid, no cells
Liquid portion of blood
contains:
90% water
10% salts

10. (Erythrocytes) Red Blood Cells 30 trillion in body 120 day lifespan
Disk shaped
No nucleus
Contain Hemoglobin
red pigment which helps to carry O2 and CO2 in the presence of Iron

12. White Blood Cells
(Leukocytes)
60 billion in body
Colorless
Irregular in shape
Have 1 or many lobed nuclei (us)
Function:
Protect against
foreign substances
create ANTIBODIES

13. Neutrophil
White Blood Cells

14. Eosinophil
Lymphocyte

15. (Thromboocytes) Platelets 1.5 trillion in body 7 day lifespan
Bits of cytoplasm
No nucleus
Aid in the process of blood clotting to prevent blood loss

17. 45% Plasma: 55% Red Blood Cells White Blood Cells
Blood Components
Plasma: 55%
Red Blood Cells
(4.8 – 5.4 million)
White Blood Cells
(5,000-10,000)
Platelets (150,000 –400,000)
45%
VIDEO

18. 1) how blood is transported 2) how many times the heart pumps/min.
PULSE
is the relaxation and expansion of an artery each time the heart pumps. Pulse depends on:
1) how blood is transported
2) how many times the heart pumps/min.
(usually 60-80x’s/min.)

19. Force created by the movement of blood within the blood vessels.
BLOOD PRESSURE
Force created by the movement of blood within the blood vessels.
Systolic pressure= the force of the blood when the heart ventricles CONTRACTS.
b) Diastolic pressure= the force of the blood when the heart ventricles is RELAXED.

20. is measured using a sphygmomanometer Average Normal blood pressure
120/80

22. List 5 reasons why we can’t live without blood?
Summary:
List 5 reasons why we can’t live without blood?
Transport
Clotting
Fighting foreign invaders (antigens)
Keep body sealed from foreign substances
Carries oxygen, carbon dioxide, and nutrients