Histology of Heart and Blood Vessels

Hannah Tribe
Mind Map by Hannah Tribe, updated more than 1 year ago
Hannah Tribe
Created by Hannah Tribe almost 6 years ago
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Degree CVS1 Mind Map on Histology of Heart and Blood Vessels, created by Hannah Tribe on 04/27/2014.
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Resource summary

Histology of Heart and Blood Vessels
1 Vessels
1.1 Tunica adventitia
1.1.1 connective tissue
1.1.2 In contact with ECF
1.1.3 Gives support

Annotations:

  • important to maintain shape
1.2 Tunica media
1.2.1 smooth muscle
1.2.2 allows tone

Annotations:

  • gives elasticity and contractility
1.2.3 regulates blood pressure
1.2.4 thicker in arteries

Annotations:

  • thickest in aorta and pulmonary arteries - lots of elastic lamellae to stretch and recoil in response to pulse
1.2.5 elastic lamellae

Annotations:

  • look dark under a microscope
1.2.6 Dissecting aneurism of aorta

Annotations:

  • blood enters t. media due to wall rupture
1.3 Tunica intima
1.3.1 endothelium
1.3.2 collagen
1.3.3 in contact with blood
1.3.4 selectively permeable
1.3.5 makes mediators of inflammation and tone
1.3.6 Regulates adhesion of platelets
2 Muscular artieries

Annotations:

  • e.g. carotid, iliac,brachial
2.1 distribute blood
2.2 not elastic
2.3 contractile
2.3.1 regulate flow
2.3.2 regulate pressure
2.4 Lots of collagen in adventita
2.5 layer of elastic lamina between media/intima and media/adventitia
3 Arterioles
3.1 microscopic
3.2 regulate flow
3.3 regulate pressure
4 Capillaries
4.1 mainly endothelial cells
4.2 exchange
4.3 Continuous
4.3.1 NO gaps in walls
4.4 Fenestrated
4.4.1 pores
4.5 Sinusoids

Annotations:

  • in liver and spleen
4.5.1 WIDE fenestrations
5 Veins/venules
5.1 thin/flexible walls
5.2 more prominent adventitia
5.3 thin/no t.media
5.4 valves
5.5 longitudinal smooth muscle between valves

Annotations:

  • assists flow against gravity
6 Heart
6.1 pumps blood
6.2 regulates BP
6.2.1 secretes ANP

Annotations:

  • atrial natriuretic peptide
6.2.1.1 stimulated by over stretched atria
6.2.1.2 Increases water and sodium uptake to urine

Annotations:

  • = lowers blood volume
6.3 valves
6.3.1 elastic fibres
6.3.2 collagen
6.4 Epicardium

Annotations:

  • (visceral pericardium)
6.4.1 fatty, loose connective tissue
6.4.1.1 nerves
6.4.1.2 vessels
6.4.1.3 coronary arteries
6.4.1.4 mesothelium
6.4.1.4.1 simple cuboidal
6.4.1.4.2 adipose tissue
6.5 Myocardium
6.5.1 part which contracts
6.6 Endocardium
6.6.1 endothelium
6.6.2 loose connective tissue
6.6.3 lots of Purkinje fibres
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