Weintraub1 has described three important types of connective tissue in the body. These connective tissues may occur in the form of (1) periorgan sheets, surrounding or enclosing organs or muscles, or (2) nerve-vessel sheets, originating from nerve-vessel trunks and conveying the blood and nerve supply to the structures or organs in which they terminate (the nerve-vessel sheets of the neck, therefore, bear a close resemblance to the mesenteries of the bowel), or (3) loose elastic areolar tissue, within the spaces of the neck as elsewhere in the body. Areolar tissue spaces are found between adjacent nerve-vessel sheets, between adjacent organs and within the periorgan tissues of many structures of the neck.
The areolar spaces permit free movement between the muscles and organs and attain their greatest development in those regions in which mobility is most important in the physiologic functioning of the organs involved. Thus, in the neck the loosest
IGLAUER S. ANATOMIC-PATHOLOGIC STUDIES OF RETROPHARYNGEAL (PERIPHARYNGEAL) ABSCESS. Arch Otolaryngol. 1941;33(1):31–44. doi:10.1001/archotol.1941.00660030032002
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