The decline in the resting metabolic rate in middle adulthood is largely attributable to the loss of muscle tissue and the corresponding increase in ______.
A) neuronal connections
B) fatty tissue
C) free radicals
D) bone porosity

Question

Quizplus · Accepted Answer

The decline in resting metabolic rate during middle adulthood is primarily due to the loss of muscle tissue and an increase in fatty tissue. Muscle tissue burns more calories than fat tissue, so as muscle mass decreases and is replaced by fat, the metabolic rate decreases.

The Decline in the Resting Metabolic Rate in Middle Adulthood