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Does Your Heart Rate Increase When You Are Scared?

By: Angela Pak & Ashleigh Schaar
by Angela Pak on 30 May 2013

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Transcript of Does Your Heart Rate Increase When You Are Scared?

Does Your Heart Rate Increase
When You Are Scared? Background Information At the moment when a person is scared or surprised, the hormone epinephrine, or adrenaline, is secreted by the medulla in the adrenal glands on the kidneys. An increase in epinephrine stimulates the heart, increases blood pressure, releases stored sugar in the liver, narrows small blood vessels, and increases blood flow in major muscles to get the body ready to “fight or flight.” Hypothesis If a person is scared,
then that person’s heart rate will increase. Data Subject # Heart Rate:
Resting Heart Rate:
After Scared Change in
Heart Rate 1 2 3 4 5 6 115 86 76 79 61 129 142 76 128 113 94 142 +27 -10 +52 +34 +33 +13 Conclusion We have accepted our hypothesis:
If a person is scared, then that person’s heart rate will increase.
With the exception of one participant, all other participants' heart rates increased when scared. Heart Rate Heart rate, or pulse, is the amount
of times the heart beats per minute.
Heart rate varies from person to
person and can change in different
situations. Heart rate can be
calculated by simply using a heart
rate monitor or by pressing your
index finger to your neck or wrist. Resources "Your Pulse and Your Target Heart Rate." Cleveland Clinic(redirection). Cleveland Clinic. Web. 04 May 2011.http://www.cchs.net/health/health-info/docs/0900/0984.asp?index=5508
"Nervous System Information." University of Pennsylvania Health System | Penn Medicine. Adam, 2001. Web. 04 May 2011. <http://www.pennmedicine.org/health_info/body_guide/reftext/html/nerv_sys_fin.html>.
"Epinephrine - Used, First, Blood, Body, Produced, Function, Early Research and Use, Hormones and the Body, Catecholamines, Vasopressors." Medical Discoveries. Web. 20 May 2011. <http://www.discoveriesinmedicine.com/Enz-Ho/Epinephrine.html>. The End By: Ashleigh Schaar & Angela Pak
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