• 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

    in changing rooms * Disinfect floors regularly * Treatment of the infected * Stop suffers by implementing well ventilated foot wear inhibit growth * Avoid cross infection- Do not share same towel/shoes/socks * Carefully dry in between toes * Avoid walking barefoot Treatment * Apply fungicidal cream to infected area

  2. human body system

    Pancreas produces the lot amylase, lipase and the protease. There are only three main digestive enzymes, which break down big molecules into smaller ones. Starch, protein and fats are big molecules, which can't pass through cell walls into the blood.

  1. Investigating the density of blood

    time for the drop to fall between the 100 cm3 and the 10 cm3 mark. I will repeat this procedure at least 10 times for each sample in attempt to achieve the most accurate and fair results as possible.[JA4] 4 Prediction summary I will expect to gain different results for each sample.

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

    BTEC HNC/HND or degree's in subjects who specialise in science and food. Food scientist would be finding out ways to keep food fresh and safe for its consumers, ways to produce food quicker and cheaper and improve its quality. Salaries for qualifications like this would start from around about �20,000

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