6 results for “hair”
The Human Body
Skin, Hair and Nails
hairs upright, giving you goosebumps. Hair and nails Hair and nails are both made of keratin
Article · 3 min read
The Human Body
The Senses
hair cells sit on a membrane that vibrates at different places for different pitches, high notes
Article · 4 min read
The Human Body
Lungs and Breathing
hair. The airways are lined with cells that beat tiny hairs upward, sweeping mucus and the debris
Article · 4 min read
The Human Body
The Heart and Blood
hair's breadth of a capillary. Capillaries merge into veins, which carry the blood back to the heart
Article · 4 min read
The Human Body
Muscles
hairs on your arms stand up. You cannot control it and rarely feel it. Cardiac muscle
Article · 4 min read
The Human Body
The Immune System
hairs that sweep them out. The gut is crowded with friendly bacteria that leave no room
Article · 4 min read
