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Human anatomy Science Fair Project

Pulse Points Across the Body

Easy
Pulse Points Across the Body | Science Fair Projects | STEM Projects
You have probably felt your pulse at the wrist before. But did you know you can find it in at least six other places on your body? Your heartbeat sends a pressure wave through every artery. You find and count your pulse at the wrist (radial artery) and the neck (carotid artery). Then check the inner thigh (femoral artery) and behind the knee. Each site connects to a different artery carrying blood to a specific region. Comparing pulse sites shows how blood pressure rises during systole (the pumping phase) and falls during diastole (the resting phase). A stethoscope can help you match the pulse to the heart sounds.

Hypothesis

The hypothesis is that the pulse rate will change when the body is in different positions.

Science Concepts Learned

Heart Rate

Your heartbeat sends a pressure wave through every artery, so you can count beats per minute at more than one place on the body. The wrist (radial artery), neck (carotid artery), and inner thigh (femoral artery) each connect to a different artery in a different region. Checking multiple pulse sites — and using a stethoscope to match the pulse to the heart sounds — confirms how the rate holds consistent across the body.

Pulse

Each heartbeat sends a pressure wave through every artery in the body. You can find this beat in more places than just the wrist. At the wrist it travels through the radial artery; at the neck, the carotid artery; and behind the knee, a different artery carrying blood to that region. Each pulse point connects to a specific part of the body. As pressure rises during systole (the pumping phase) and falls during diastole (the resting phase), a stethoscope can help you match the pulse to the heart sounds.

Circulatory System

The circulatory system moves blood to every part of your body through arteries. You can feel this blood flow as a pulse at the wrist (radial artery), neck (carotid artery), and inner thigh (femoral artery). A stethoscope helps you match the pulse to the heart sounds.

Blood Pressure

Each heartbeat sends the force of blood pushing through every artery as a pressure wave. You can feel this wave at the wrist (radial artery), the neck (carotid artery), and behind the knee. Each pulse point connects to a different artery carrying blood to a specific region of the body.

Systole and Diastole

Every heartbeat sends a pressure wave through your arteries. When the heart squeezes blood out during systole, that pressure spikes. When it fills back up during diastole, the pressure drops. You can feel this two-part rhythm as a pulse — at the wrist, the neck, behind the knee, or several other sites. Comparing those pulse sites reveals how blood pressure rises and falls with each pumping phase.

Method & Materials

You will take your pulse at multiple sites, such as the radial pulse, carotid pulse, and femoral pulse.
You will need a clock or watch, a diagram of the body, and a stethoscope.

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Results

Through this project, you will learn how to take your pulse and explore how it changes when your body is in different positions. You will also observe that the pulse rate changes when the body is in different positions.

Why do this project?

This science project is interesting and unique because it allows students to explore the relationship between the pulse and the heartbeat.

Also Consider

Experiment variations to consider include taking the pulse of other sites, such as the facial artery, brachial artery, abdominal aorta, and popliteal artery.

Full project details

Additional information and source material for this project are available below.
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