leerjaar 2/3 TTO - The circulatory system

8.3 Your blood transports

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Slide 1: Slide

BiologieMiddelbare schoolvwoLeerjaar 2

This lesson contains 24 slides, with text slides and 2 videos.

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8.3 Your blood transports

Slide 1 - Slide

Blood transports everything your body need

(heat, nutrients, oxygen, waste products)

Blood contains:

- blood plasma (Proteins- fibrinogen for clotting blood,

water, carbon dioxide

oxygen waste products

nutrients

Slide 2 - Slide

Red blood cells

small round discs,

no nucleus

red pigment: haemoglobin absorb and release oxygen

Slide 3 - Slide

white blood cells

do not have a fixed shape

do have a nucleus

destroy pathogens

Slide 4 - Slide

platelets

fragments of cells that have broken up

- Clotting when the blood is outside the vessels

Trombosis- clottering of blood in the vessel

Slide 5 - Slide

Slide 6 - Video

Blood circulation

Slide 7 - Slide

Slide 8 - Slide

Pulmonary circulation

Red=O2

Blue=CO2

(absorb 02 / release CO2)

Pulmonary circulation
Right side heart

lungs

Left side heart

Slide 9 - Slide

systemic circulation

Release O2 to every living cell (respiration)
absorb CO2

Left side heart

- every organ

right side heart

Slide 10 - Slide

Resperatory system and Circulatory system

Slide 11 - Slide

Blood vessels (these return in 8.4)

3 types of blood vessels

artery, capillary, vein

Slide 12 - Slide

Artery

From heart to organs

(red) transport O2

walls are:
- thick, firm, elastic

High blood pressure

Slide 13 - Slide

Capillaries

Release O2 into organs

Absorb Co2 into bloodstream

- one cell layer tick walls

- white bloodcells can go between the cells into the tissue

Slide 14 - Slide

Slide 15 - Video

Veins

Transport CO2 from organs to the heart

- low bloodpressure

thinner, less elastic

Includes valves

- The blood can flow in 1 direction

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The heart

Slide 17 - Slide

the heart is part of the systemic circulation.

It needs O2 (respiration) the coronary arteries provide O2 to the heart.
The coronary veins brings CO2 back to the heart

Slide 18 - Slide

the heart

Slide 19 - Slide

coronary artery, capillaries, coronary vein

Slide 20 - Slide

pulmonary circulation /septum, / systemic circulation

Slide 21 - Slide

valves

Slide 22 - Slide

Slide 23 - Slide

Cardiac cycle - 70 times a minute= heart rate

Slide 24 - Slide