According to the Research by Vaillant,in Order to Reach Old

question 7

Multiple Choice

According to the research by Vaillant,in order to reach old adulthood in a healthy state,individuals must achieve five or six of the seven identified critical components by age:

• A)50.
• B)55.
• C)65.
• D)40.

---

Definitions:

Hemostasis

Hemostasis is the physiological process by which bleeding ceases, involving blood vessel constriction, platelet plug formation, and blood clotting.

Prothrombin

A plasma protein that is converted into thrombin during the blood clotting process, playing a critical role in hemostasis.

Thrombin

An enzyme in blood plasma that causes the clotting of blood by converting fibrinogen to fibrin.

Hematocrit

Hematocrit is a blood test measure that indicates the proportion of red blood cells to the total blood volume, expressed as a percentage.