The plane that divides the body into left and right portions
is known as the sagittal plane also known as the median plane. Sagittal plane
bisects the body into two halves and the plane motion occurs around a coronal
axis. Movements in the sagittal plane are the flexion and the extension. The Flexion
movement involves the bending movement in which the relative angle between two
adjacent segments decreases. The Extension movement involves a straightening
movement in which the relative angle between the two adjacent segments
increases. In general, both flexion and extension movement occur in many joints
in the body, which include shoulder, wrist, vertebral, elbow, knee, foot, hand
and hip.
The sagittal plane has two subsections; they are the
Midsagittal and the Parasagittal. The midsagittal runs through the median plane
and divides along the line of symmetry while the parasagittal plane is parallel
to the mid-line and divides the body into two unequal halves.
Of all the energy that does reach Earth, slightly less than 34 percent is reflected back to space by clouds. The Earth itself reflects another 66 percent back to space. Less than one percent of the total energy that reaches Earth is used by plants for photosynthesis.
