higher human 2.5 + 2.6 0.0 / 5 ? Human Biologyheart structure and blood vesselsScottish HighersSQA Created by: jennylock2Created on: 10-02-22 11:21 736245918 Across 1. What does the first (top) number shows in a blood pressure reading. (8, 8) 6. Which blood vessels contain valves? (5) 7. What substances diffuse from tissue fluid to the cells? (6, 3, 7) 8. What substance does not pass through to the tissue fluid from plasma. (8) 9. What blood vessels take blood away from the heart? (8) Down 2. What happens to the blood pressure as the blood moves further away from the heart? (2, 9) 3. what happens when the impulses spread from the SAN through the atrium? (6, 7) 4. what term is used to describe high blood presure? (12) 5. which autonomic pathway decreases heart rate? (15) 6. what happens when the impulses move from the AVN down through the septum and in to the ventricular muscle? (11, 7)
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