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Which of the following clump and adhere to the wall of the injured blood vessel to begin the process of hemostasis?

A.

White blood cells

B.

Antibodies

C.

Red blood cells

D.

Platelets

Answer and Explanation

The Correct Answer is D

White Blood Cells (WBCs): WBCs are part of the immune system and play a role in fighting infections. However, they are not directly involved in hemostasis or clot formation.

Antibodies: Antibodies are proteins produced by the immune system to recognize and neutralize foreign substances (antigens). They do not directly participate in clot formation.

Red Blood Cells (RBCs): RBCs carry oxygen and carbon dioxide but are not directly involved in clotting. They do not adhere to the vessel wall during hemostasis.

Platelets: Platelets are small cell fragments in the blood. They clump together (aggregate) at the site of injury to form a temporary plug (platelet plug). Platelets adhere to the injured vessel wall and release chemicals that initiate clotting.


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Related Questions

Correct Answer is ["7"]

Explanation

Dosage (mL) = Desired dose (mg) / Concentration (mg/mL)

Dosage (mL) = 350 mg / (250 mg/5 mL)

Dosage (mL) = 7 mL (rounded to nearest whole number)

Therefore, the nurse should administer 7 mL of amoxicillin suspension.

Correct Answer is D

Explanation

A. Food, Drug and Cosmetic Act (FD&C Act): This act sets the groundwork for food and drug regulations, but it's not the specific legislation governing dietary supplements. While FD&C Act applies to some aspects of supplements, DSHEA has more specific regulations.

B. Joint Commission on the Accreditation of Healthcare Organizations (JCAHO): This organization focuses on accrediting healthcare facilities, not regulating supplements.

C. Health and Human Services (HHS): HHS is a broad department encompassing various healthcare agencies, but DSHEA is the specific act within HHS that governs supplements.

D. Dietary Supplement Health and Education Act (DSHEA): This 1994 act specifically addresses dietary supplements, outlining regulations for labeling, manufacturing, and marketing. It places the responsibility for ensuring the safety and effectiveness of supplements on the manufacturers, unlike prescription drugs approved by the FDA.

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