In the Igbo culture, masks are used in almost all of the ceremonies and are essential to the understanding of the holiday. Also, both cultures have holidays that celebrate ancestors and family. Such as the american Fathers day, and the Igbo celebration of ancestors.
Bending forward or rounding your lower back is called flexion. Flexion in the lumbar spine is primarily limited by compression of the intervertebral disks and tension in the ligaments that run along the back of the spine. The normal range of movement of lumbar flexion is 40 to 50 degrees.he range of motion, or how far your spine can move, is limited by the disks between the vertebrae, the ligaments that tie the vertebrae together and the orientation of the facet joints on the back part of the vertebrae.
The range of motion (ROM) of a knee is that range (in degrees) from full extension to full flexion. Take a look at the full flexion and extension of these three healthy university students. You can easily see the amount of variation between them.Note that the middle one is a woman, the outer two are men. flexed knee is at about 140 degrees. It is a common misconception that 0-140 degrees is a normal range of motion, but most people have some hyperextension, too, taking their ROM into negative numbers. 1  normal ROM is usually minus 5 to 143 degrees in women.