Interoception refers to sensations originating from what source?

• A. External stimuli like light
• B. Internal body states such as hunger and thirst
• C. Muscle strength
• D. Balance and posture

Answer: (B)

Interoception is about sensations that originate from inside the body—the signals your organs and tissues send about internal states like hunger, thirst, heart rate, and digestion. These internal cues come from visceral receptors and reflect the body’s internal environment, which is why hunger and thirst are classic interoceptive sensations. This stands in contrast to exteroception, which covers senses tied to the outside world such as light and sounds, and to proprioceptive/vestibular inputs that tell you about body position and movement. So internal states like hunger and thirst are the hallmark examples of interoception, not external stimuli, muscle strength, or balance/posture.