Across
- 5. carry blood away from heart & become progressively smaller as they branch into capilaries
- 8. smallest veins, companion with arterioles, merge to form veins
- 11. three layers of artery & vein walls
- 12. also known as interna, divided into endothelium & subendothelial
- 16. smallest of all blood vessels, wall consists only of tunica intima, where metabolic exchange occurs between blood & cells outside of bloodstream
- 17. feeds capillary bed whose proximal end is surrounded by smooth muscles while distal end lacks smooth muscle
- 18. distal end of metarteriole that lacks smooth muscle
- 19. simple squamous epithelium lining inside of arteries & veins
- 20. largest type of arteries near heart, composed of fibers to stretch under increased pressure generated by bloodflow from heart, branch into muscular arteries
- 22. formed by capillaries
- 24. artery that follows axillary artery, branches into ulnar & radial arteries
- 27. circularly arranged smooth muscle that contract or dilate depending on nervous system input
- 29. also known as adventitia, connective tissue that help anchor blood vessel to organ
- 30. aorta that pumps oxygenate blood out of left ventricle, left & right coronary arteries branch off to provide blood to the heart
Down
- 1. return blood to heart & become progressively larger as they merge & are closer to heart
- 2. smallest arteries, less than six cell layers of smooth muscle in tunica media
- 3. trunk that divides into right common carotid & right subclavian arteries
- 4. smallest veins located at distal end of capillary bed
- 6. connection to thoroughfare channel
- 7. study of blood vessels divided into arteries, capillaries, & veins
- 9. elastic lamina that separates tunica media & tunica externa
- 10. circulation of oxygen-rich blood flowing to body for metabolic exchange in tissues
- 11. capillaries that begin with ring of smooth muscle in walls that branch from metarteriole
- 13. artery that follows subclavian artery
- 14. arteries divided into left & right common that branch from descending abdominal aorta at fourth lumbar vertebrae
- 15. layer of areolar connective tissue
- 21. gives off three branches
- 23. thoracic aorta that follows aortic arch & gives off branches to thoracic wall, renamed _____ abdominal aorta inferior to diaphragm
- 25. arteries with medium diameter, possess elastic fibers in concentric rings between tunics, has proportionately thicker tunica media
- 26. elastic lamina that separates tunica intima & tunica media
- 28. circulation of blood flowing from heart to lungs for O2/CO2 exchange