The ratio of the activity of the SLRDs to the activity of the radon gas is called the Equilibration Ratio (ER). Equilibrium usually occurs in about three to four hours. When an individual receives a dose of one WL in 170 hours (a miner's month), the exposure then becomes called a working level month or WLM.adon and Health When radon decays, it too produces a decay chain, with its own daughters. During its decay, it releases a large atomic alpha particle and the atom is transmuted into polonium. An alpha particle is essentially an helium atom stripped of its electrons.
The somatic nervous system consists of nerves that go to the skin and muscles and is involved in conscious activities. The autonomic nervous system consists of nerves that connect the CNS to the visceral organs such as the heart, stomach, and intestines.It mediates unconscious activities.fferent, or sensory, neurons carry impulses from peripheral sense receptors to the CNS. They usually have long dendrites and relatively short axons. Efferent, or motor, neurons transmit impulses from the CNS to effector organs such as muscles and glands.
sensory neurons, ganglia, peripheral nerves, spinal cord, and brain components The components of the nervous system that are involved in physical  sensation are nerves or ner â¦ ve endings. Nerves send an electrical  impulse to the brain, then the brain sends a message that a  particular part of the body is in pain. The Basic Functions of the Peripheral Nervous System Your brain and spinal cord may make up the headquarters of your nervous system, but the outside nerves of the peripheral nervous system play a big role in your body's variousâ¦. 2  The Five Major Parts of the Brain At its most basic, the brain controls the body.