Which type of receptors are more prevalent in males and increase the release of free fatty acids?

The correct answer is beta-adrenergic receptors. These receptors are known for their role in the body’s response to catecholamines, particularly during physical stress and exercise. Beta-adrenergic receptors, when activated by hormones such as adrenaline (epinephrine), promote lipolysis, which is the breakdown of fat stores into free fatty acids that can be utilized as energy.

In males, there tends to be a higher density of beta-adrenergic receptors, which enhances the mobilization of fatty acids from adipose tissues, especially during periods of increased physical activity. This biochemical pathway is critical for energy metabolism, particularly in endurance exercise, where the body needs to utilize fat stores efficiently.

Other types of receptors, such as alpha-adrenergic receptors, primarily have different roles, often inhibiting lipolysis when activated. Gamma-adrenergic and delta-adrenergic receptors are not typically associated with the predominant mechanisms of fatty acid release and energy mobilization in the same manner as beta receptors. Therefore, the prevalence of beta-adrenergic receptors in males is significant for promoting the release of free fatty acids and supporting metabolic processes during physical exertion.