1.

By the information provided by scientist William Harvey, complete the following table.SI. No.Vessel Structure / functionArteryVein1.Thickness of walls (Thick / Thin)2.Valves (Present / Absent)3.Pressure in the vessels (low / high)4.Direction of blood flow (heart to organs / body organs to heart)

Answer»
SI. NoVessel Structure / functionArteryVein
1.Thickness of walls (Thick / Thin)Thickthin
2.Valves (Present / Absent)AbsentPresent
3.Pressure in the vessels (low / high)highlow
4.Direction of blood flow (heart to organs body organs to heart)heart to organsbody organs to heart



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