Assertion: Blood coagulates in unijured blood vassels.
Reason: Uninjured blood vessels release an anticoagulant heparin.

Assertion: Blood does not coagulate in unijured blood vessels. Reason: Uninjured blood vessels release an anticoagulant heparin.

U shaped blood vassel

Schematically represent blood coagulation in an injured blood vessel.

Assertion: Blood circulation is absent in epithelium tissue. Reason: Blood vessels are unable to pierce basement membrane.

Assertion: Blood circulation is absent in epithelium tissue. Reason: Blood vessels are unable to pierce basement membrane.

Blood Coagulation || Lymph.

Coagulation in blood vessels is prevented by…………..

Assertion: No true blood vessels are seen in Leech. Reason: The blood vessels. are replaced by haemocoelic channels or canals filled with blood like fluid.

Which of the following prevent(s) blood clotting in uninjured blood vessels ?