(d)++The+Heart

  (1) How does your heart move the blood?

The heart is a muscle, it is sort of like a pump. The right side of your heart receives the blood from the body while the left side receives the blood from your lungs and pumps it throughout your body. Before each heartbeat, the heart fills itself with blood. It would then contract, it squeezes out the blood throughout the body.

(2) For each side of the heart, describe the blood and where it goes


 * || Left side || Blood has a higher oxygen content because it just returned to the lows || Blood goes to the entire body ||
 * || Right side || Blood has a lower oxygen content because it just returned from travelling around the body || Blood goes to the lungs ||

(3) Why does the left side have a wall that is so much thicker than the right side?

Because the left side is bigger and needs to be protected more. Also the right side just needs to pump oxygen through the lungs and doesn’t need to pump it through very far. The left side needs much more energy from the muscles because they have to pump to all parts of the body, some very far away.

(4) The jobs of different parts of the heart


 * **Part of heart ** ||  **Function (job) **  ||
 * <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Atrium || <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Receives the blood at low pressure from the veins. ||
 * <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Ventricle || <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Pumps blood at high Pressure to arteries ||
 * <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">valve || <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Directs the blood so that it goes to the right direction. ||

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(5) Your heart is always beating. Why doesn’t it get tired?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">Because following each contraction, there is always a period of relaxation. Even when it is beating fast when you exercise, it still has time to recover during this period of relaxation.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(6) What is the pacemaker?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">The pattern of the heart contraction and relaxation is kept by electrical signals and sent a region of the heart called the pacemaker. The pace maker as a piece of tissue in the wall of the right atrium. The signal from the pacemaker makes sure that first, the blood flows from the atria to the ventricles. The second thing the pace maker makes sure of is that the heart is beating fast enough for the demands of the body for oxygen and other nutrients, also for the removal of waste. If the pace maker doesn’t work very well, then an electronic artificial pacemaker can be inserted inside the chest.



<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(1) What is the job of the heart?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">The pump blood around the body

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(2) How does the heart get fed?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">The corona arteries are connected to the aorta, just where it leaves the left ventricle. This is how the heart receives the high pressure blood supply containing oxygen and glucose. When oxygen or glucose are replaced with wastes such as carbon dioxide, the blood circulates through the coronary veins, which pour the blood with nutrients to the vena cava.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(3) What is the job of the coronary artery?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">It transports blood carrying oxygen and glucose to the heart.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(4) Describe the blood entering the coronary artery?

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">It is carrying oxygen and nutrients, for the blood to use.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt 0.5in; tabstops: list .5in; text-indent: -0.5in;">(5) Describe coronary heart disease.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">It is when the coronary arteries get blocked and the supply to the heart gets cut off. The heart lacks the supplies it needs to function properly and lactic acids build up inside. When this happens often enough, parts of the heart stop contracting, meaning that a heart attack has occurred.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; margin: 0in 0in 0pt;">

<span style="display: block; margin: 0in 0in 0pt 0.25in; mso-add-space: auto; mso-list: l0 level1 lfo1; text-align: justify; text-indent: -0.25in;"><span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">(9) Download [|Drawing the human heart]. One of your group will have to practice this until they are good at it. Then use CAM-studio (on your tablet) to record how to do this (for all students in the class), both drawing and talking at the same time. Remember you can pause CAM-Studio when it is time to add labels. media type="custom" key="8424844"

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Work Cited: <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">"BIOEN 3102 Bioengineering Lab II: Lab 2 Handout." //Home - U of U Biomedical Engineering//. Web. 16 Feb. 2011. []. <span style="background: white; color: black; font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 24pt; margin: 0in 0in 0pt; punctuationwrap: hanging; text-autospace: ideograph-numeric; text-indent: -0.5in;">Pts, 85.75. "Natural Solution to Artificial Heart Pacemakers May Be Possible | TopNews." //TopNews | Only Top Stories of the Day//. Web. 16 Feb. 2011. []. "Blog Themeds: Erection and Coronary Disease." //TheMEDS Canadian Pharmacy - Leading and Reputable Distributor of Top-Grade Medications//. Web. 16 Feb. 2011. [].