In normal individuals, there is a constant production of ketone bodies by the liver and their utilization by extrahepatic tissues. The concentration of ketone bodies in blood is maintained around 1 mg/dl. Their excretion in urine is very low and undetectable by routine urine tests (Rothera's test).
A: Examples of involuntary muscles, also known as smooth muscles, are the muscles of the urogenital tract, digestive tract, circulatory system and respiratory tract. Involuntary muscles are not controlled by the organism's will. Their actions are automatic and facilitated by the autonomic nervous system.
VOLUNTARY MUSCLES. A voluntary muscle is when you consciously choose to move a muscle, like pointing a finger or picking up a glass for example. Skeletal muscles are voluntary. Its activity can be consciously controlled by our bodies because those are the bones that allow us to move our muscles and bones when we want. An involuntary muscle is when it moves without you choosing to, such as heart muscles or reflex muscles like blinking an eye.