BRAINCAKEArterioles
Oxygenated blood is distributed throughout the body by arteries branching into sequentially smaller arteries, arterioles, and capillaries.
Arterioles carry blood under lower pressure than arteries, from arteries to capillaries. They control the flow of blood between the two.
The muscle layer is relatively thicker than in arteries as it allows constriction of the lumen so it controls the movement of blood to the capillaries.
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Key terms in this lesson
- tissue fluid
- The fluid, formed by the filtration of blood plasma under hydrostatic pressure, that surrounds cells and supplies them with substances.
More in Mass Transport in Animals
- Pressure and Volume Changes
- Cardiac Output
- Blood Vessels
- Arteries
- Veins and Venules
- Capillaries
- Tissue Fluid
- Return of Tissue Fluid to Blood
All 27 lessons in Mass Transport in Animals · All AQA AS-level Biology topics