University:
Sam Houston State University
Course:
BIOL 1406 | General Biology I
Academic year:

2020
Views:

181

Pages:

10
Author:

InterstellarInnovator

TRY IT:  Place two fingers in the hollow of your neck between the windpipe and the large muscle of the neck. Press lightly until you feel a pulse.  We are now going to take our pulse for 15 seconds. When I say “go”, begin to count the number of pulses you feel until I say “stop”.  Now, multiply this number by 4.  This will give you your beats per minute  How many did you come up with? THINK ABOUT IT: A normal human adult resting pulse has between 60-100 beats per minute  Is yours in this range?  How do you think the heart rates of livestock species compare to humans?  When would you think that an animal would have an elevated heart rate?  Why is this important to us? CIRCULATORY SYSTEMS OF LIVESTOCK SPECIES OBJECTIVES: Define the circulatory system.  Discuss how the circulatory system works.  Define the components of the circulatory system.  Analyze the components of the circulatory systems and their functions.  Describe blood analysis and why it is important.  SO WHAT IS THE CIRCULATORY SYSTEM ANYWAY? the bodily system consisting of the heart, blood vessels, and blood that circulates throughout the body, delivers nutrients and other essential materials to cells, and removes waste products.  Definition:  Consists of: Heart Blood vessels Veins CIRCULATORY SYSTEM  Often helps stabilize body temperature and pH  Can you think of an example of this in humans?  Going into shock if your blood pressure is at an extremely low level  Others? HOW IT WORKS  Vertebrates have a closed circulatory system, which generally confines the blood within its walls  Blood flows through two circuits through a partitioned heart that works as two side by side pumps  This double circuit supports the high levels of activity that is characteristic of most vertebrates THE HEART a four-chambered, hollow muscle used to pump blood.  Divide into four compartments:  Definition: Left Ventricle Right Ventricle Left Atrium Right Atrium pump blood into arteries  Atrium: the chamber of the heart that receives blood  Ventricles: THE HEART  Right side of the Heart:  pumps deoxygenated blood (blood low in Oxygen) to the lungs  Left side of the Heart:  pumps oxygenated blood (blood rich in Oxygen) all over the body CROSS SECTION OF A HORSE’S HEART