Proprioceptive receptors are primarily located where?

• A. Inner ear and muscles
• B. Skin and eyes
• C. Lungs and liver
• D. Heart and kidneys

Answer: (A)

Proprioception relies on receptors that detect body position and movement, mainly located in muscles and joints. Muscle spindles and Golgi tendon organs provide information about muscle length, tension, and the angle of joints, sending signals to the brain to help you sense where your limbs are in space without looking. The inner ear is part of the vestibular system and helps with balance and spatial orientation, but it isn’t the primary site of proprioceptive receptors. Other options pair with skin and vision, or with organs that aren’t involved in sensing limb position, so the choice that emphasizes muscles best matches where proprioceptive sensors are found.