A licensed vocational nurse's duties revolve around basic patient care. LVNs monitor their patients' vital signs and keep their charts up to date. They assist patients in basic hygiene and personal care, including bathing and dressing them and helping them eat if necessary.
Accessory muscles refers to muscles that assist, but do not play a primary role, in breathing. There is some controversy concerning which muscles may be considered accessory muscles of inhalation.
MOTOR UNIT- is the motor nerve and all of the fibers it innervates. Different muscles have different innervation ratios-. 1:10 for occular muscles- smaller motor units. 1:10,000 for quadriceps muscles - larger motor units. This is what results in fine versus gross motor movement.