Card Set Information
What is starvation?
The physiological condition that arises as a consequence of prolonged insufficient food consumption
Can be pysiological or pathological
What is protein-energy malnutrition?
The disease caused by pathological starvation
What are some clinical features of PEM?
Reduced body weight
Muscle wasting and decrased strength
Reduced respiratory and cardiac muscular capacity
Decrased metabolicm rate
Whata are the adaptive mechanisms for PEM?
Greatly reduced skeletal muscle mass
Decreased heart muscle mass
Decreased respiratory muscle mass
Decreased protein reserve
What is a successful adaptation to starvation?
The cessation of loss of body substance despite continued food deprivation
Cessation of weight loss implies
: cessation of fatt loss from the body, cessation of lean tissue loss from the body
How is resting energy expenditure reduced during starvation?
Reduced mass of metabolically active tissue (slow, weeks)
Reduced energy expenditure per unit active tissue (fast, days)
How is non-restin energy expenditure reduced during starvation?
Reduced work of moving
Reduction of voluntary movements
How is protein requirement reduced during starvation?
Diminished lean tissue mass
More efficient retention of dietary protein
Lean tissue mass stabilizes despite continued low protein intake
What is vitamin D made of?