A patient was brought to the Emergency Department by ambulance with two arrow wo

Question

A patient was brought to the Emergency Department by ambulance with two arrow wounds. One arrow is still in the patient on the left side; entering anteriorly between the 7th and 8th ribs in a 15 degree angle, the arrow head protruding posteriorly. The second wound is located in the posterior cervical triangle.

? What serosal cavities have been penetrated by the first arrow?

? Explain the location, the microscopic cellular components of the serous membrane, and the purpose of

the serous membrane.

Explanation / Answer

1. The thoracic cavity and the chest cavity have been penetrated by 1st arrow.

2. Serous membrane is a thin membrane which lines internal body cavities and organs such as lungs, heart and abdominal cavity. It allows frictionless movements in many organs.

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