The document discusses various parts of blood circulation including arteries that supply blood to the upper limbs and transport blood from the heart to all organs and tissues, veins that carry blood to the placenta and connect the ascending and descending aorta, and capillaries found in the liver that allow exchange of oxygen, nutrients, and waste.

1. Blood Circulation Across 1. supply blood to the upper limbs Down 3. carry blood to the placenta
2. process increases the diameter of the lume 4. connects the ascending aorta with the 8. vessels
transport blood from the heart to all. descending aorta (2 words) organs and tissues (2 words) 5.
pulmonary and aortic trunks and their majc 11. collect blood from the diaphragm branches are
arteries 13. values in prevent the backllow of blood 7. sagging, swollen veins 14. fenestrated
capillaries found in the liver 9. a bulge in the weakened wall of a blood ve 15. vein descends
superficial to the 10. smallest veins stemocleidomastoid muscle (2 words) 12. innermost layer of
a blood vessel