The Basic Event in the Formation of a Blood Clot

question 18

Multiple Choice

The basic event in the formation of a blood clot is the change of

• A) fibrinogen to fibrin.
• B) fibrin to fibrinogen.
• C) thrombin to prothrombin.
• D) vitamin K to prothrombin.
• E) red blood cells to platelets.

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Definitions:

Atm

A unit of pressure defined as exactly equal to 101,325 Pa, representing atmospheric pressure at sea level.

Temperature

A measure of the thermal energy of an object or substance, indicative of how hot or cold it is, typically measured in degrees Celsius, Fahrenheit, or Kelvin.

Helium Gas

A colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements.

Atm

A unit of pressure; standard atmosphere, approximately equal to the Earth's atmospheric pressure at sea level (101.325 kPa).