Question Video: Recognizing the Major Components of Blood in Humans Biology

Which of the following is not a major component of blood in humans? [A] Epithelial cells [B] Red blood cells [C] White blood cells [D] Plasma [E] Platelets

01:51

Video Transcript

Which of the following is not a major component of blood in humans? (A) Epithelial cells, (B) red blood cells, (C) white blood cells, (D) plasma, or (E) platelets.

This question is asking us to recall the major components of blood and then choose the response that is not one of those components. So first, let’s recall that there are four major components to human blood. We’ll briefly review them before we select our answer.

Here we have a diagram of a blood vessel. And we’ve exposed a view of the lumen so that we can see the blood flowing through it. The blood vessel has an inner lining composed of a layer of epithelial cells. The main component of our blood is plasma, an amber-colored liquid.

Plasma transports electrolytes, proteins, hormones, nutrients, and waste from place to place in the body. It also carries the different types of blood cells. Red blood cells are cells that are specifically adapted to transport oxygen. White blood cells are immune cells that help our bodies to identify and fight off pathogens. And platelets are small cell fragments that form blood clots in order to prevent bleeding and infection. Red blood cells, white blood cells, platelets, and plasma are the four components that make up human blood. Epithelial cells are lining cells and not a part of the blood itself.

Returning to our answer choices, which of the following is not a major component of blood in humans? Well, epithelial cells are not a component of our blood.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.