IB Biology Topic B3.2.3 Adaptations of Arteries for the Transport of Blood Away from the Heart Revision Notes (SL/HL)

IB Biology Topic B3.2.3 Adaptations of Arteries for the Transport of Blood Away from the Heart Revision Notes (SL/HL) | RevisionDojo

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Artery Walls: Built for High-Pressure Transport

Arteries carry blood from the heart to the tissues of the body.
Their walls are built to handle the high pressure generated during the cardiac cycle.

Three Layers: Structure and Specialized Functions

Tunica externa: the tough outer layer of connective tissue containing collagen fibres.
1. It gives strength to withstand the high pressure inside arteries.
Tunica media: the thick middle layer of smooth muscle and elastic fibres made of elastin.
1. The smooth muscle changes the diameter of the artery by contracting and relaxing.
2. The elastic fibres let arteries stretch and recoil as pressure rises and falls.
Tunica intima: the smooth endothelial lining that reduces friction for blood flow.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
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Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Artery Walls: Built for High-Pressure Transport

Arteries carry blood from the heart to the tissues of the body.
Their walls are built to handle the high pressure generated during the cardiac cycle.

Three Layers: Structure and Specialized Functions

Tunica externa: the tough outer layer of connective tissue containing collagen fibres.
1. It gives strength to withstand the high pressure inside arteries.
Tunica media: the thick middle layer of smooth muscle and elastic fibres made of elastin.
1. The smooth muscle changes the diameter of the artery by contracting and relaxing.
2. The elastic fibres let arteries stretch and recoil as pressure rises and falls.
Tunica intima: the smooth endothelial lining that reduces friction for blood flow.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic B3.2.3: Adaptations of Arteries for the Transport of Blood Away from the Heart Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Artery Walls: Built for High-Pressure Transport

Three Layers: Structure and Specialized Functions

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Artery Walls: Built for High-Pressure Transport

Three Layers: Structure and Specialized Functions

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account