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Many people in the UK are unable to identify the location of their major organs, a study suggests.

Less than 50% of the more than 700 people surveyed could correctly place the heart, BMC Family Practice says.

Under one-third could place the lungs in their correct location, but more than 85% got the intestines right.

There are concerns that a poor grasp of anatomy could potentially compromise patient care.

The researchers said they had aimed to update a similar piece of research carried out in 1970, in which just over half of all the questions were correctly answered.

But with an average of 52.5% correctly answered, the results have barely changed.

"As it turns out, there has been no significant improvement in the intervening years."

There was little difference between men and women, although women did perform better when a female body image was used.

Answers: Heart - C, Kidneys - D, Pancreas - B.