Dewlap Dewlap A dewlap is a longitudinal flap of skin that hangs beneath the lower jaw or neck of many vertebrates. While the term is usually used in this specific context, it can also be used to include other structures occurring in the same body area with a similar aspect, such as those caused by a double chin or the submandibular vocal sac of a frog. In a more general manner, the term refers to any pendulous mass of skin, such as a fold of loose skin on an elderly person's neck, or the wattle of a bird. Dewlaps can be
Anthropometry of the upper arm mm gradation. The measurement is taken with the person standing upright, with arms hanging down loosely. The skin fold is pulled away from the muscle and measured with the calipers, taking a reading 4 seconds after the calipers have been released. The measuring point is halfway between the olecranon process of the ulna and the acromion process of the scapula. The mid-upper arm circumference is the circumference of the upper arm at that same midpoint, measured with a non-stretchable tape measure or 3D printable bands. The derived anthropometric measures include the mid-upper arm muscle area (MUAMA), the upper arm fat