Anatomy & Physiology Hematological #2

Question

Which substance or structure within the erythrocyte determines an individual blood type?

Answers

  1. Albumin
    • Rationale:

      Albumin is a protein that is present within the human body and within the blood; however, it does not determine an individual’s blood type.

  2. Enzymes
    • Rationale:

      Enzymes are present within the human body and within the blood; however, they do not determine an individual’s blood type.

  3. Hormones
    • Rationale:

      Hormones are present within the human body and within the blood; however, they do not determine an individual’s blood type.

  4. Glycoprotein
    • Rationale:

      Glycoproteins are responsible for an individual’s blood type. There are two types of glycoproteins, A and B.

Overview

An individual blood type is classified by the absence, or presence, of antibodies and inherited substances located on the surface of RBCs.

Explanation

Learning Outcomes

There are four major blood types that are determined by the presence, or absence, of a specific antigen. The specific term for these antigens is glycoprotein. Those with A glycoproteins have type A blood while those with B glycoproteins have type B blood. Individuals with both types of glycoproteins have type AB blood while those without these glycoproteins have type O blood.

Test Taking Tip

Consider the structure of blood cells and substances that determine blood type to correctly answer this question.

Video Rationale