Which Substance Gives Red Blood Cells Much of Their Red Color? Keratin Collagen Hemoglobin Melatonin Did You Know! Vitamin C deficiency can start with subtle symptoms long before scurvy develops….

What's One Reason Your Nose Can Become Stuffy When You Cry? Your lungs produce mucus Tears drain into the nasal cavity Your tongue swells Your ears release fluid Did You…

Which Human Body Part Continues Changing Noticeably Throughout Adulthood? Ears Teeth Elbows Kneecaps Did You Know! Vitamin B12 deficiency can mimic neurological disease. Low B12 can cause numbness, tingling, balance…

Which Organ Can Regenerate A Significant Amount of Its Lost Tissue? Heart Liver Bladder Thyroid Did You Know! A rare disorder can make people sleep for days at a time….

Which Muscle Is Primarily Responsible For Helping You Breathe? Biceps Hamstring Trapezius Diaphragm Did You Know! Sleep paralysis can include vivid hallucinations. A person may wake up mentally alert but…

What Happens To Your Spine During A Typical Day? It gets slightly shorter It gets slightly longer It becomes wider Nothing changes Did You Know! Some people physically act out…

Which Part Of Your Body Has No Direct Blood Supply? Tongue Cornea Fingernail Eardrum Did You Know! Some people experience vivid hallucinations after losing part of their vision. Charles Bonnet…

Which Everyday Activity Can Provide Benefits For Your Heart, Muscles, And Mood? Walking Sitting for short periods Skipping meals Staying indoors Did You Know! A disorder can make ordinary sounds…

Which Food Is Generally An Excellent Source of Omega-3 Fatty Acids? White bread Salmon Beef French fries Did You Know! Hallucinations aren’t exclusive to psychotic disorders. Hallucination-like experiences can occur…