BIO210Y5 Lecture Notes - Lecture 1: Mediastinum, Pleural Cavity, Pelvic Cavity

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7 Jun 2018

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BIO210Y

Lecture 1B  Foundations of our

Body Organization

Body Cavities

Essential Functions of Body Cavities

1. Protect organs from shocks and impacts

2. Permit changes in size and shape of internal

organs

• During development, the ventral body cavity subdivides into the thoracic cavity

and the abdominopelvic cavity.

• Viscera refers to the internal organs that are partially or completely enclosed by

• Serous membranes line the walls of the body cavities and cover the surface of

the viscera

Consist of parietal layer and visceral layer

• Parietal layer  lines cavity

• Visceral layer  covers organ

Pericardial Cavity

The Thoracic Cavity

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