Question

write an experiment to observe blood cells and the liquid pan of the blood distinctly ​

Answer 1

Answer:

Difficulty Beginner

What will you learn?

You will learn how to prepare samples for high powered magnification of cells. You will use a lancet to safely draw blood from your fingertip in order to view blood cells under the RoachScope. You will also draw hemolymph from a cockroach to view. With these observations and introductory materials you will come to a better understanding of how the circulatory system and your blood works!

Prerequisite Labs

Getting Started with the Roachscope

Equipment

RoachScope

Glass Slides

Slide Covers

Toothpick

Lancets

Syringe/Hypodermic Needle

Background

Have you ever heard of something being referred to as a "life blood?" Well that's because blood is responsible for keeping nearly all of our body's cells alive and growing! Our blood is made up of four main components: white blood cells, red blood cells, platelets, and plasma - each of which serve specific purposes. Before getting into the blood science, however, it is helpful to learn a bit about circulatory systems! Then, let's take this opportunity to learn a bit about the Cockroach too!

Humans have a closed circulatory system which delivers oxygen, nutrients, hormones, and other essentials throughout our body. As its name suggests, a "closed" system means that all of our blood flows through arteries, veins, and capillaries. This means that our blood isn't just sloshing around inside of us, instead, our heart is forcefully pumping blood throughout our blood vessels. When you suffer from broken blood vessels, such as a cut or scrape, this is called a hemorrhage. An important ability of our body's blood is its ability to clot, or to create a blockage that stops the blood from hemorrhaging, giving the body time to regenerate cells and heal the injury. You may also hear the circulatory system referred to as the cardiovascular system. The cardiovascular system is just a more focused term, referring primarily to the heart (cardio) and blood vessels (vascular).