Lordosis

Lordosis is a medical term used to describe an inward curvature of a portion of the vertebral column. Two segments of the vertebral column, namely cervical and lumbar, are normally lordotic, that is, they are set in a curve that has its convexity anteriorly (the front) and concavity posteriorly (behind), in the context of human anatomy. When referring to the anatomy of other mammals, the direction of the curve is termed ventral. Curvature in the opposite direction, that is, apex posteriorly (humans) or dorsally (mammals) is termed kyphosis. Excessive or hyperlordosis is commonly referred to as swayback or saddle back.

Lordosis behavior

Lordosis behavior, or Mammalian lordosis, is a sexual response in mammals, such as mice and cats, that consists of a ventral arching of the spine. During lordosis, the spine curves so that the apex points in the ventral direction. That is, the spine arches inward toward the abdomen.

Lordosis aids in copulation, as it elevates the hips to allow for intercourse. It is commonly seen in females during estrus.

The anthropologist Helen Fisher speculates that women wearing high heels demonstrate lordosis behaviour, a (false) signal that she is ready for sexual activity.

More information is available at [ Wikipedia:Lordosis ]