Physiological conditions that promote the synthesis of ketone bodies also promote the
A) oxidation of fatty acids in erythrocytes.
B) oxidation of glucose in adipose tissue.
C) synthesis of amino acids in skeletal muscle.
D) synthesis of fatty acids in cardiac muscle.
E) synthesis of glucose in liver.

Question

Quizplus · Accepted Answer

Ketone bodies are synthesized in the liver from fatty acids during periods of low glucose availability, such as fasting, prolonged exercise, or a low-carbohydrate diet. This process is known as ketogenesis. It is a way for the body to provide an alternative energy source for various tissues, including the brain, when glucose is scarce. The synthesis of ketone bodies is thus linked to the liver's ability to produce glucose (gluconeogenesis) under these conditions, rather than being directly associated with the synthesis of fatty acids in cardiac muscle, the oxidation of fatty acids in erythrocytes (which do not contain mitochondria and thus cannot oxidize fatty acids), the oxidation of glucose in adipose tissue, or the synthesis of amino acids in skeletal muscle.

Physiological Conditions That Promote the Synthesis of Ketone Bodies Also