Across
- 3. the velocity of blood flow is higher in vessels with _____ diameters.
- 6. these blood vessels carry blood back to the heart
- 7. a chemical messenger secreted by cells or organs and distributed through the circulatory system
- 8. vasodilation will cause the blood ______ to decrease.
- 10. widening of blood vessel diameter
Down
- 1. chemical that binds to beta-receptors to cause vasodilation of blood vessels for skeletal muscles
- 2. narrowing of blood vessel diameter
- 4. vasoconstriction of blood vessels will increase the ______ that opposes blood flow
- 5. these blood vessels carry blood away from the heart
- 9. the total cross-sectional diameter is highest in these types of blood vessels.