The Circulatory System Flashcards
What is the function of plasma
Plasma is the liquid part of the blood it is a pale yellow colour and is mostly made of water plasma transports many dissolved chemicals around the body examples of these chemicals are useful materials such as boots and hormones along with waste carbon taxes salts and Euboea chemical reactions in all our body cells produce heat plasma transports heat from one part of the body to another by doing this it plays an important roil in maintaining our body heat at 37 degrees.
Explain plasma and body temperature
If we are too hot extra blood is sent to asking especially to the face causing to go ahead. This allows more heat to pass out of our body and we cool down . when we are ill I body temperature may rise. If we get too hot we are said to have a fever. The high the high temperature help destroy the bacteria or, especially, the viruses that are causing us to be ill. However, high temperatures can It has a damaging effects on the body. This is why the high temperature should not last too long.
It is plasma that carries heat around the body. Plasma also carries red blood cells, white blood cells and platelets.
What is the function of red blood cells
Red blood cells are made in the jellylike centre of the bands, called bone marrow. They contain a red tie or a pigment called Haemoglobin to make Haemoglobin we need iron.Haemoglobin -and therefore Red blood cells-carries oxygen.
Oxygen enters the red blood cells in the alveoli of the lungs not. It attaches to the Haemoglobin in the red cells. The blood reaches cells in other parts of our body ( such as arm muscles or the brain) haemoglobin releases the oxygen into these cells.
What is the function of white blood cells.
White clouds are also made in bone marrow. White blood cells fight infection. Some do this by surrounding Michael organisms such as bacteria and viruses and destroying them. So my blood blood cells from proteins called antibodies. Antibodies help destroy my causing thousands which have entered the body. The importance of anti-bodies can be seen By realising that AIDS is a condition in which antibodies are not produced.
What is the function of platelets.
Platelets are formed in the bone marrow when large cells break down into smaller pieces. Platelets help to form blood clot. In this way they help to prevent loss of blood. Blood clots also prevent micro- organisms entering the body.
How many different types of blood vessels are there and what are their names.
There are three types of blood vessels arteries veins and capillaries.
What is the function of arteries
Arteries carry blood away from the heart. Remember a is for artery and a is for away. As it is that of carrying blood away from the heart there is a strong flow blood in the in the arteries. We say the blood in arteries is under high-pressure . in order to a stand the high-pressure the walls of arteries are very thick and strong. There is no danger of blood in the archery flowing backwards. This means there is no need for valves in an artery .
What is the function of the veins
Veins carry blood to.The blood flow or pressure in a vein is low bus stop the low-pressure it means that they can have tenor, weaker was then arteries. To prevent blood flowing backwards in the veins they have valves at regular intervals.
What is the function of capillaries
Capillaries are tiny blood vessels. They are found between arteries and veins . There are you number of capillaries in the human body. The walls of a capillary are very for thin this allows materials to pass in and out of capillaries. For example, in our intestine’s food passes into blood capillaries. This food is carried by the blood stream to all the cells of the body. The food then leaves the capillaries to enter the body cells.
What what four compartments make up blood
Plasma red blood cells white blood cells and platelets
explain a bit about the heart
The heart is about the size of a clenched fist. It is located in the left-handed side of the chest.
The heart is made of a special type of muscle called cardiac muscle. Cardiac muscle is very strong and does not tire easily . The heart contracts in order to pump blood around our body in blood vessels. When we are resting, the average rate of an adult heartbeat is 70 beats per minute . When we exercise, the heart beats faster. This causes blood and the material move faster around our body.
What are the parts of the heart.
Chambers. The heart test consists of four chambers. The top two are the right and left atrium and the bottom two are the right or left ventricles.septum. The two sides of a heart are separated by a muscular well call the septum. One child is born with a hole in the heart the whole is usually found in the septum.heart valves. Valves in the heart to make sure that the blood can only flow in One Direction. In this way there is similar to fasten a car tyre or football.
Explain bloodflow to the heart.
Plus some arms, legs and other parts of the body enters the right atrium of the heart. This blood is low in oxygen. The right atrium contracts to pump the blood down through our valve into the right ventricle. When the right ventricle contracts, the vase shuts to prevent the blood going back into the right atrium. As a result, blood is pumped out of the heart to the lungs. In the lungs, the blood gains oxygen and also loses carbon dioxide and water vapour. Blood from the lungs flow back into the left atrium of the heart. This part is now rich in oxygen. Left Atrium contracts to pump the blood True a valve and into the left ventricle.left ventricle contracts, the vast snapshot and blood is forced out of the heart and all around the body. Eventually the spot will lose action to the body cells. It’ll returned to the heart of the right atrium. The cycle that starts all over again.
What are the two blood circuits.
The circulatory system consist of two circuits. In the long circuit, blood flows from the heart.
In the longer, body circuit, blood flows from the heart to the rest of the body and back to heart again.
What did the ventricles of the heart do.
The right ventricle pumps blood from the heart to the lungs. This is a reasonably short distance and so the muscular walls of the right ventricle a fairly thin.The left French coupons blood from the heart all around the body. This is a very long journey answer the muscular walls of the left ventricle a very thick.
Explain blood flow through the blood vessels of the heart.
No that is low in oxygen enters the right atrium through a vein called the vena cava. The plumber artery takes deoxygenated blood from the heart to the lungs. The plumatory artery carries oxygenated blood from the lungs to the heart.The Aorta which is the largest artery in the body carries oxygen rich blood from the heart to the rest of the body.
Explain pulse rates
On average the athlete heartbeat 70 times a minute. This figure can change depending on age, health and fitness. As the blood is pumped down the arteries it causes a wave of pressure. This way the pressure is called a post. A post can be found in areas of the body where the arteries are close to surface, for
example at the wrist and in the neck.The pulse rate is used to measure the rate of the heartbeat.
Why do we need exercise
When we exercise, the cells in the body especially in the muscles need to increase supplies of food and oxygen. Initiation, cells need to get rid of extra amount of carbon dockside and heat. As it is not, exercise because the heart to beat faster and a plus weight increases. Exercise causes us to breed faster. Exercise causes the heart to contract my strongly. Exercise increases the chance of the muscles and I’ve selected and it also increases the chance of a heart. Exercise helps to reduce weight this means there is a blow it the man for oxygen in the body. For these reason some exercises good for the heart and the circulatory system in general.
What is heart disease and how can the risk of heart disease been reduced.
Why does he is the major cause of Elders and dad in Ireland. It is mainly caused by small arteries that supply blood to the heart becoming a cloud of fat. The risk of heart disease can bluejeans by exercise regularly. Eating a healthy diet especially been eating less fat and salt. No smoking.
