Topics: Immunity Quiz
If the skin is broken then a blood clot forms to seal this cut.
What is the first step in the process of blood clotting?
A. Fibrinogen turns into fibrin
B. Platelets release clotting factors
C. Fibrinogen is converted into thrombin
D. Thrombin is converted into prothrombin
Select your answer:
Topics:
Disease & Immunity Proteins, Amino Acids, & Enzymes Autoimmune Disease DNA Structure, Replication, Proteins Characteristics of Life Nutrition and Calorific Value Physical Fitness Corona Muscle Tissues History of Psychology Ortho Ward Simulation Vaccines Biotherapeutics & Cellular Meat Body Defense Bones, Joints and Muscles Nervous & Endocrine SystemsOther quiz:
Respiratory System › Viewtiny sacs of lung tissue specialized for the movement of gases between air and blood.
A. lungs
B. bronchi
C. alveoli
D. capillaries
Human Body Systems › View
What is the main function of the Respiratory system?
A. it helps you breath
B. it helps you digest
C. it helps you move
D. it helps you receive information about the environment around you