Monday, 23 March 2015

Chloe Prior Unit 4 Assignment 2

The Cardiorespiratory System


Decrease In Resting Heart Rate
Our resting heart rate has the ability to slow itself down as our heart is trained to pump a large amount of quantity blood with every heart beat.

The Heart Can Pump More Blood Per Beat
Our heart becomes more efficient, so our resting heart rate decreases. The heart does not need to beat as quickly to supply the blood with Oxygenated blood.

Increased Vital Capacity
Vital capacity is the amount of air that can be expelled from the lungs. This is because our lungs need more oxygen for our muscles to have nutrients when we exercise. The tougher the exercise gets the more oxygen our lungs need. This increases the vital capacity.

Increase In Heart Size And Strength
When training our muscles will contract more frequently, body temperature will raise and our breathing will get deeper. The heart muscles increase in size and strength.

Increase in stroke volume
Stroke volume increases above resting values during exercise such as Cross country. stroke volume increases with increasing rates of work, but only up to exercise intensities between 40% and 60% of maximal capacity when the body is in an upright position stroke volume almost doubles from resting to maximum value.

Decreased risk of hypertension (high blood pressure)
if you are a healthy person and exercise regularly it is less likely that you will have high blood pressure because your arteries in your heart and not blocked up and enable the blood to flow round the body more easily.

Increased efficiency to deliver oxygen and remove waste product
in the body there is a number of numerous different cells which are each specialised to work for a different function. all these cells work together in a co-ordinated manner to keep you healthy. each cell requires a high quality supply of oxygen and other nutrients that take place to get rid off the waste.


Increased lung efficiency and gaseous exchange
Within the alveoli, an exchange of gases takes place between the gases inside the alveoli and the blood. The gases move by diffusion from where they have a high concentration to where they have a low concentration




























The Musclosketal System


1)Hypertrophy
 hypertrophy is the enlargement of a muscle belly due to an increase in the size of muscle cells, (the muscle's fibres.) Muscles become larger due to a strength training routine because each fibre becomes larger or thicker.

2) Increase In Bone Density (Bone Strength)
To help increase your bone density high impact exercise helps increase but if you have had a broken bone or your bones are not very strong then doing high impact exercise will not help increase your bone density, it will be decreased.

3) Decreased Risk Of Osteoporosis
The more calcium you have in your diet the less chance you have of developing Osteoporosis.

 4) Improved Posture
 To get good posture you have to exercise all parts of the body, rather than part. Having stronger muscles will lead to better muscles in your later life.

5) Increased Number Of Mitochondria
 Creates energy in your muscles. It is used from Oxygen, protein and water. H2O + Food + O2 that we breath --> Energy. The more Mitochondria we have ( the food water and air) the more faster and efficient we will be at creating energy.

6) Stronger Connective Tissues (ligaments and tendons), So More Resistant To Injury
If your ligaments and tendons are stronger, your ligaments prevent your joints from twisting in different direction.

7) Increased Thickness of hyaline Cartilage
 More cushion when we exercise. When you have more cushion on your cartilage it stops the bones from rubbing.

 8) Increased Stability Of Joints
Joint stability refers to the resistance of the musculoskeletal tissues that surround a skeletal joint. The stability in joints explains why some people are known to get dislocation injuries.




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