Muscle Spindle

A mechanoreceptor detecting muscle stretch and tension.

Key Functions:

• Senses muscle length and rate of stretch.
• Contributes to proprioception and reflex arcs.

Interacting Systems & Components:

• Nervous System (sensory feedback)
• Musculoskeletal System (muscle monitoring)
• Mechanoreceptor (broader category)
• Sensory Receptor Atlas (population count & density)