Description
1. Using the Internet, search for additional learning aids from reputable sources.
Using the Internet, search for additional learning aids from reputable sources. These can be animations, videos, diagrams, or any other type of resource that you find useful in your studies. Find at least one resource for each of the following topics:
- Heart anatomy
- The electrical conduction system of the heart
- Blood flow through the heart
- Blood flow through the body
- The cardiac cycle
For each topic write a brief summary paragraph that explains the major highlights of the topic and briefly explains why you think the resource you have found will help in learning the material. Cite the resource appropriately.
2. Step 1. Access and review the video:
Using the information from your textbook, the activity you completed in Step 1, and the lesson presentation, create 20 questions that will effectively assess a student's understanding of the specialized cells found in the human blood. Include 10 multiple choice, 8 true or false, and 2 essay questions. Provide an answer key for the questions.
PLEASE NO PLAGIARISM! APA FORM!
Explanation & Answer
Attached.
Running Head: HEART AND BLOOD ELEMENTS
Heart and Blood Elements
Name
Institution
1
HEART AND BLOOD ELEMENTS
2
Heart and Blood Elements
Part I: Summaries
Heart Anatomy
The heart’s main function is to pump deoxygenated blood into the veins and take it to the
lungs so that it can be oxygenated then it is pumped back to the heart. The oxygenated blood is
pumped from the heart to the arteries, which transport the blood to the various parts of the body.
The heart stays within pericardial cavity whose walls and lining is a membrane called
pericardium. The heart’s outermost layer is known as Epicardium. It assists in lubricating and
protecting the hearts’ outside. The second layer, known as myocardium is thick and muscular. Its
responsibility is pumping blood. Below it is a thin and smooth layer known as endocardium. Its
responsibility is to keep blood from clotting or sticking in the hearts’ inside.
http://www.texasheart.org/HIC/Anatomy/anatomy2.cfm
The Electrical Conduction System of the Heart
The heart muscles also known as myocardium produce electrical impulses, which causes
your heart to contract or to beat. The electrical impulse starts in the sino atrial node (SA) found
at the foremost of right atrium. It is also known as natural pacemaker. Immediately an electrical
pulse is dispersed from natural pacemaker, the atria contracts. This signal goes through a node
called atrioventricular (AV) which checks and causes it to go through the ventricles’ muscle
fibers making them to contract. Although the electrical impulses are sent at a given rate, the heart
beat rate can change as a result of outside influence such as hormonal factors, anxiety and so on.
http://www.texasheart.org/HIC/Anatomy/conduct.cfm
HEART AND BLOOD ELEMENTS
3
Blood Flow through the Heart
The heart has two large veins through which the blood enters, known as the inferior vena
cava and the superior vena cava. They are responsible for emptying the deoxygenated blood to
the heart’s right atrium. During the contraction of the atrium, the blood through the tricuspid
valve that is open flows to the right ventricle. The tricuspid valve closes when the blood fills the
ventricle to the full to stop it from flowing backward.
After the contraction of the ventricle, the blood through the pulmonic valves goes out of
the heart to the pulmonary artery and goes to the lungs to be oxygenated. This oxygen-rich
blood is emptied to the heart’s left atrium. After the contraction of the atrium blood flows
through a mitral valve that is open to the left ventricle. The mitral valve closes to prevent blood
from the ventricle from flowing backward.
http://www.medicinenet.com/heart_how_the_heart_works/page3.htm
Blood Flow through the Body
The blood enters the lungs through the pulmonic valve and goes to the pulmonary artery
then in tiny air sac to the lungs where the deoxygenated blood is re-oxygenated. The carbon
dioxide...