Functions of the cardiovascular system
1) What substances does the cardiovascular system deliver around the body of your athlete; how and why does it do this?
The athlete's body uses the aerobic system to produce ATP (energy). In the aerobic system the oxygen and the glucose both combine and produce energy. The red blood cells carry oxygen around the body in red hemoglobin. They have no nucleus which gives them more surface area for hemoglobin. Red blood cells are mainly produces in some bones such as ribs, vertebrae and femur. The more oxygen that is pumped in the muscles the more potential there is to create aerobic energy. The faster the heart is beating the more blood it is pumping around the body and the muscles.
2) What substances does the cardiovascular system help to remove from the body: how and why does it do this?
The job of plasma is to take out carbon dioxide from the body. Plasma is yellow liquid which contains water with different things dissolved in it. Plasma is the substance that makes blood liquid and watery, if plasma wasn't there it would just be thick blood and if you cut yourself you'd be able to tiny blood cells. Plasma carried everything in the blood streams, therefore there is higher rate of blood delivery and higher rate of wastage removal. There is greater delivery and distribution of nutrients; greater rate of removal of waste products.
The job of plasma is to take out carbon dioxide from the body. Plasma is yellow liquid which contains water with different things dissolved in it. Plasma is the substance that makes blood liquid and watery, if plasma wasn't there it would just be thick blood and if you cut yourself you'd be able to tiny blood cells. Plasma carried everything in the blood streams, therefore there is higher rate of blood delivery and higher rate of wastage removal. There is greater delivery and distribution of nutrients; greater rate of removal of waste products.
3) What is thermoregulation? How and why is this used by your athlete to help them during their sporting performance?
Thermoregulation is keeping the body at a constant temperature of 37 degree Celsius. The core of the body must maintain a stable temperature to allow all cells to function normally. If the organs are in cold condition they will not be able to function properly, therefore the enzymes would not work and processes will slowly stop working and we can die.
On the other hand if we get too hot our body's enzymes will denature and stop working which can also be the reason for a person's death.
Blood is transported to the surface of the skin; sweat is produced which helps carry away the excess heat from the body and stops the enzymes from denaturing.
Thermoregulation is keeping the body at a constant temperature of 37 degree Celsius. The core of the body must maintain a stable temperature to allow all cells to function normally. If the organs are in cold condition they will not be able to function properly, therefore the enzymes would not work and processes will slowly stop working and we can die.
On the other hand if we get too hot our body's enzymes will denature and stop working which can also be the reason for a person's death.
Blood is transported to the surface of the skin; sweat is produced which helps carry away the excess heat from the body and stops the enzymes from denaturing.
4) There are two other functions of blood, besides delivery of oxygen and nutrients, and removal of waste products. What are they? How and why do these functions aid an individual at rest and during sporting performance?
The other 2 functions of the blood are to fight infectious diseases and form blood clots.
When a person is ill more white blood cells are produced to protect the body from infectious diseases and bacteria. They repair tissue after an injury and are larger than blood cells; they also have a nucleus. All white blood cells make antibodies there are chemicals that destroy germs - different germs need different antibodies in order to destroy them. White blood cells are made in your bone marrow. In sport speeding up the delivery of white blood cells around the body helps to reduce inflammation healing tissues at a faster rate. Our body is made up of 58% plasma, 1% of white blood cells and platelets and 44% red blood cells.
1) Explain how and why this redistribution of blood flow occurs during sporting performance.
During exercise, metabolism speeds up, due to this the muscles require more oxygen during sporting performance. To provide the muscles with oxygen the heart beats faster to pass on oxygen - rich blood; the speed of the blood flow increases. When there is increase in heart rat3e, to meet the demands the cardiac output automatically increase. The faster the heart pumps blood around the body the faster the blood circulation.
2) Explain why the
blood flow to the brain remains the same at rest and during exercise.
Blood flow to the brain remain the same at rest and during exercise because the brain has to work all day long even though a person is resting. The brain passes the message telling the body to breath. The brain has to always be working; blood flow to the brain allows this because there is always the same amount of blood flow going to the brain.
3) Explain why your
athlete should not eat at least one hour before competition, in relation to
blood redistribution.
If an athlete eats one hour before the competition the blood is used for the digestive system rather than for the muscles. When the athlete is participating in a competition the working muscles don't get as much oxygen as it should be; therefore the muscles won't be working as hard and as long as they should be because they help it to make energy and break down fat to provide the muscles with energy.
No comments:
Post a Comment