The adrenal glands are comprised of two parts--the cortex and medulla--that produce hormones (chemicals messengers that regulate body functions). The medulla, or inner part of the adrenal glands, produces the hormones norepinephrine and epinephrine, which regulate the fight or flight response in the body, the body's reaction to stressful events.
One cun = width of the thumb, in the middle, at the crease. or. One cun = the distance between the distal and proximal inter-phalangeal joints of the 3rd (middle) finger. One and 1/2 cun (1.5) = width of the two forefingers. Three cun = combined breadth of the four fingers, at the level of the pinky finger's first joint above the palm of the hand.
On the ocean, distances are calculated slightly different than on land, hence Nautical phrases are applied as opposed to land or Statute terminology. Nautical Mile (nm): A unit of distance used in navigation and based on the length of one minute of arc taken along a great circle. The value 1,852 meters (6,076.1 ft) has been adopted internationally. Statute mile: A unit of distance equal to 1,609 km (0.869 nm, 5,280 ft.). 1 nautical mile = 1.15 statute miles 1 statute mile = 1.6 kilometers. A knot is a unit of speed one nautical mile per hour, which is approximately 1.15 statute miles per hour.