Circulatory System – I Circulatory System – I Composition of blood, Tissue fluid and Lymph, Increase in efficiency of mammalian RBC, Blood coagulation 1 / 10 Which component of blood is primarily responsible for clotting? White blood cells Red blood cells Platelets Plasma 2 / 10 The enzyme responsible for breaking down blood clots is: Thrombin Fibrin Plasmin Collagen 3 / 10 Fibrinogen is converted into fibrin by the action of: Prothrombin Thrombin Plasmin Platelets 4 / 10 The first step in the process of blood coagulation is: Formation of fibrin Platelet adhesion to the site of injury Conversion of prothrombin to thrombin Activation of fibrinogen 5 / 10 The biconcave shape of red blood cells helps to: Increase their surface area for gas exchange Decrease their flexibility Reduce their lifespan Store more hemoglobin 6 / 10 Mammalian red blood cells are unique because they: Have a nucleus Lack a nucleus Have multiple nuclei Are larger than other cells 7 / 10 Lymph is similar to blood plasma but does not contain: White blood cells Platelets Red blood cells Proteins 8 / 10 The main function of lymph nodes is to: Store red blood cells Filter lymph and trap pathogens Produce platelets Transport oxygen 9 / 10 Tissue fluid is formed from: Blood plasma leaking out of capillaries Lymphatic vessels directly The digestive system Muscle contractions 10 / 10 Which of the following proteins is most abundant in plasma and helps maintain osmotic pressure? Hemoglobin Albumin Fibrinogen Globulin Your score isThe average score is 0% 0% Restart quiz
