Monday, 23 March 2015

Caitlin Walton Unit 4 Assignment 1

Increased heart rate
When you begin to exercise, muscles require more oxygen in order to generate the energy that is needed to do the activity. To get the oxygen to the muscles to produce energy for exercise they need more blood which is why the heart pumps faster to get the blood to the muscles.

Increased breathing rate
When we exercise we need more oxygen to be able to do the activity. Oxygen is delivered to the muscles through the blood. However, to get O2 into our bodies, we must breathe it in. This is why we breathe faster/more often. This also gets rid of the carbon dioxide that is created as a bi-product of the respiration system.

Sweat production and skin reddening
The blood is warm and then increases your body temperature. Blood may rise to the surface of the skin which results in our skin to appear reddened. Sweating is the body's self regulation system to control it's own system. Sweat means our body temperature will cool more efficiently when we overheat.

Increased blood flow
Oxygen attaches to the blood using haemoglobin and is then delivered to the muscle which means we can generate the energy we need to exercise. Do-oxygenated blood is brought back to the heart and lungs to re-oxygenated.

Merit Level
The arteries are the large blood vessels that carry blood from the heart to all the organs and muscles of the body, to give them the energy and oxygen they need. The arteries manage the flow of blood by controlling the speed and direction it flows in. When you exercise, your archeries open and close.






 
 
 
 
 
 
 
 
 Definitions
Tidal volume is the total amount of air we breathe in a single breath.
Cardio output is the amount of blood pumped out of our heart in a period of time.
Stroke volume is the amount of blood released from one ventricle of heart in one beat.


Increased production of synovial fluid for joint lubrication and nourishment
Synovial fluid is viscid lubricating fluid secreted by the membrane lining joints and tendon sheaths etc. The synovia creates synovial fluid which lubricates our joints. Just like adding oil to door hinges which helps to door to open and close smoothly.

Increased joint range of movement due to increase in blood flow and increased muscle temperature 
Blood flow is the continuous circulation of blood in the cardiovascular system. By doing exercise and stretching your body temperature will improve your muscle elasticity. Therefore they can stretch further.

Micro tears in muscle fibres, causing the muscle to rebuild itself and become slightly bigger and stronger
When exercising, we are causing damage to our muscles. When micro tears occur, its the healing process which makes us stronger. As soon as you start training, you'll notice more frequent muscle contraction, raised body temperature, pulse and deeper breathing; also known as tidal volume. 

Exercise encourages new bone formation
By performing weight exercises on long bones of the arms and legs, you are improving the bone density and preventing osteoporosis.

Increased metabolic activity
Metabolism is the chemical processes that occurs within a living organism in order to maintain life. The more exercise you do, the better your metabolism. This means you will burn calories quicker.


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