• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Blood's Passage around the body

Extracts from this document...


Blood starts its journey throughout the body by exiting the left ventricle through the aorta in the heart. At this stage blood is rich in oxygen. The aorta goes into two main arteries in the head, the left and right carotid arteries, and one artery to each arm. The aorta moves down the chest and into the abdomen. The abdomen contains 3 main arteries to the liver and intestines, and one to each kidney. The aorta then divides into the right and left iliac arteries, which supply blood to the pelvis and legs. From the arteries the blood flows into arterioles. ...read more.


From the capillaries, blood enters the venous system, first passing through small vessels called venules. Some solutes diffuse across venules walls, which are a bit thicker than capillary walls. From the venules, the blood enters the jugular vein, which receives blood from the brain, tissues of the head, neck, shoulders and arms. All the veins from the various parts of the body eventually merge into two large blood vessels, one called the superior vena cava, the other called the inferior vena cava. The superior vena cava collects blood from the head, arms and neck, and the inferior vena cava receives blood from the lower part of the body. ...read more.


This is called the systematic circuit, in which the hearts left half pumps the oxygenated blood to all regions of the body where oxygen is needed. There are a few short cuts that the blood takes through its circulation. On leaving the intestines, the blood does not go directly back to the heart, but instead is drained into the hepatic portal system of veins. This allows blood that may be rich in digested food to go directly to the liver. Once it reaches the liver it goes through special capillaries called sinusoids and then goes to the hepatic veins. These eventually lead to the inferior vena cava. ?? ?? ?? ?? Blood Circulation A Brief Overview ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. Human biology short notes

    by female mosquito Prevention and Control Break the life cycle of vector (Measures against vector) * Drain swamps * Increase the rate of flow of collected water in an area * Removing tins etc. to prevent water from collecting * Mosquitoes lay eggs in water so it prevents mosquito from

  2. GSK, Innocent drinks, Imperial College and Fullers, an overview.

    Laboratory technicians are important at Fullers because they have to invent to tastes and textures for there drinks, they spend there time experimenting and testing new packaging techniques and safer and easier storage techniques. They would be earning an average workers wage.

  1. human body system

    They are stored in small tubes outside the testes. They pass along a much bigger tube called the sperm tube. Glands add a fluid, which keeps the sperm alive. The sperm and the fluid are called semen. The sperm and the fluid are called urethra. This runs down the centre of the penis.

  2. Investigating the density of blood

    When I perform the real experiment I will have a better idea of what I am doing and the techniques needed to gain more precise results. The method I used was fine however I feel one modification needs to be made.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work