The circulatory system

What fights infection in the body, they have a nucleus and appear colourless. Makes up about 1% of the body and can double to 2% to fight an infection

A condition where too few red blood cells appear in the body as a result of iron deficiency

Platelets come from broke bone marrow, and break down into Thrombin, which breaks down into Fibrin, what will clot and stop the blood flow

fragment cells that form when larger cells in bone marrow break apart, they then break themselves down to make a blood clot

A cell in your blood that transports oxygen through the blood. They are made of iron containing molecules of hemoglobin. A red blood cells lives for about 120 days. They do not contain a nucleus

The fluid part of the blood that suspends red, white blood cells and platelets

blood is made of two parts a solid part and a fluid part. The fluid part is called plasma and solid part is called formed portion

Superior/Inferior Vena Cava, Right Atrium, Tricuspid Valve, Right Ventricle, Pulmonary Valve, Pulmonary Arteries, Alveoli (Lungs), Pulmonary Veins, Left Atrium, Bicuspid Valve, Left Ventricle, Aortic Valve, Aorta, Arteries, Aterioles, Capillaries, Venules, Veins

Oxygen poor blood enters the heart by the superior or inferior vena cava, it is then sent to the right atrium which once full of blood, pushed it through the Tricuspid Valve to stop it from flowing backwards. It then enters the Right Ventricle which connects to the Pulmonary Valve also stopping blood from flowing backwards, and into the Alveoli where it collects oxygen and becomes oxygen rich blood. Travelling through the Pulmonary Veins it reaches the Left Atrium of the heart and travels through the Bicuspid Valve into the Left Ventricle, which once full, sends the blood into the Aortic Valve and then the Aorta to be sent to the rest of the body. The blood leaves in Arteries which turn into Aterioles. Once the blood runs out of oxygen again, it goes through the capillaries which turn Aterioles into Venules which lead to Veins to go back to the heart

What provides blood to the muscle tissues of the heart itself

What transports oxygen rich blood to deliver nutrients and remove wastes from the cells throughout the body

What transports the oxygen poor to the alveoli in lungs for oxygenation and CO2 removal. It enters in the right ventricle and exits through the left artrium

The main pathways blood will travel throughout the body in two main branches: Pulmonary and Systemic

Where the left ventricle pumps blood to be sent back to the rest of the body

where oxygen rich blood enters the left atrium

Where oxygen poor blood enters the heart from the bottom half

Where oxygen poor blood enters the heart from the top half

The right side will take in the de-oxygen blood in and the left side will "renew" the oxygen in the blood and send it back out

Valve that separates the left ventricle from the aorta

What takes deoxygenated blood from the lungs to the heart

Separating the right ventricle from the pulmonary arteries

Valves that separate the left atrium and the left ventricle, Bi as it has two flaps

Valves that separate the right atrium from the right ventricle, "tri" as it has three valves

The heart has four valves to ensure blood flows in the right direction, (Tricuspid, Bicuspid, Plumonay and Aortic)

Thick muscular walls that separate the right of the heart from the left

The bottom two chambers in the heart, they receive blood from the atria and pump it away from the heart

The top two chambers in the heart, they fill with blood returning to the heart

Mammal and Bird hearts have four chambers, two on the top and two at the bottom

• 1.Pump Blood to the body
• 2.Ensure the blood only flows in one direction
• 3.Separate Oxygen rich blood from oxygen poor blood

the nerve system decreases blood flow near the skin to help conserve heat (body is cold)

the nerve system increases blood flow near the skin to help release heat (the body is hot)

Where Veins come together to reach the Capillaries, to take on oxygen poor blood to the heart

what transmits the electrical signal through a special group of fibres called bundle of his these fibres go to the purkine fibles which tell the heart to contract then relax

SA node sends a signal, signal is received by the AV node and sends it through a bundle of his to the Purkinje  Fibers which tell the heart to contract

What tell the heart to relax and contract

What sends electric signal that stimulates the muscles to contract and then relax rhythmically

The opening and  closing of valves in the heart as blood flows through them. When systolic pressure happens you get the first part of the heart beat and when the valves relax, you get the second part in the form of Distole Pressure

Where Ateries come together to reach the Capillaries

The smallest blood vessel, it's capillary wall is one cell layer thick. Capillaries cover every part of the body. Blood will flow through the capillary the slowest to allow diffusion to happen. They play an important role in absorption, transport and releases nutrients. The switch between Aterioles and Venules for blood

Arteries have larger outer and middle layers with a smaller inner layer. They have a smaller lumen (where transport takes place) so only one blood cell may go at a time. Veins have really thin layers, but a massive lumen space for blood transport

Pressure on a body part will cause the values in the veins to close, causing a lack of blood on one side, and a build up on the other, the feeling you feel when a body part is asleep is a message to the body from the nerves that is saying that body part needs to get blood

Thin blood vessels with non elastic walls, they take oxygen poor blood to the heart. They cannot contract on their own, instead the expanding of others allows them to contract. (Arteries). They have one way values to stop the blood from flowing backwards

Thick blood vessels with elastic walls, they take oxygen rich blood away from the heart. As the blood flows through them they expand (while ventricles contract) and then snap back (ventricles relax), this action keeps the blood flowing in the right direction in addition to the pumping movement of the heart

• 1.Transport gases, nutrients and waste
• 2.Regulate internal body temperature and hormone transport
• 3.Protect the body against blood loss and toxic substances entering the body