You Cut Your Finger,and After Putting Pressure on the Wound

question 70

Multiple Choice

You cut your finger,and after putting pressure on the wound for several minutes,you notice that it is still bleeding profusely.What may be the problem?

• A)Platelets are not functioning properly, or there are too few to be effective.
• B)Mast cells are not releasing their chemical messengers.
• C)There are too many antigens to allow clotting.
• D)Hemoglobin levels are too high to allow clotting.
• E)Macrophages have not yet arrived at the wound site.

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Definitions:

G Protein

A protein that binds the energy-rich molecule GTP, involved in transmitting chemical signals from outside the cell to its interior.

GTPase

An enzyme that hydrolyzes the guanosine triphosphate (GTP) to guanosine diphosphate (GDP), playing a critical role in cell signaling.

ATP

ATP, or adenosine triphosphate, is a molecule that transports chemical energy within cells for metabolism.

Endocrine Glands

Glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct.