Which sense relates to the position of body parts in relation to one another and the ground?

The concept that relates to the position of body parts in relation to one another and the ground is proprioception. Proprioception is a sensory system that provides information about body position, movement, and spatial orientation. This sense relies on sensory receptors located in muscles, tendons, and joints, allowing an individual to understand where their limbs are without needing to look at them.

Kinesthesis, while similar, refers more specifically to the perception of body movement rather than the awareness of body position. While both proprioception and kinesthesis are often used interchangeably, proprioception encompasses the broader aspect of spatial awareness and positioning of body parts.

The vestibular sense is related to balance and spatial orientation but mainly involves the inner ear's ability to detect changes in head position and movement. Equilibrium, closely tied to the vestibular system, specifically focuses on maintaining balance. Both these senses play a role in overall body awareness but do not directly describe the position of individual body parts as proprioception does.