What is the smallest organ in the human body?
The pineal gland is the smallest organ in the human body. Its average size ranges from 5 to 8 millimeters and is located deep within the cranium, near the brain stem. The pea-sized organ plays a role in regulating sleep and wake cycles and the body’s response to light. It produces and secretes melatonin, a hormone that helps control the circadian rhythms that regulate our sleep and wake cycles. The pineal gland is shaped like a tiny pinecone, which is how it got its name (“pine”-al gland). However, it is pronounced “pin-ee-uhl.”
The correct answer is Pineal gland.