Nipples react to stimuli through thousands of nerves. Cold weather triggers muscle contractions in nipples. Sexual stimulation can cause erect nipples. Nipple piercings increase sensitivity and sensitivity
Areola is the pigmented area surrounding the nipple in the breast. Average areola size is about 4 cm in diameter. Areola size is determined by genetics and is not correlated with breast size
Tiny sebaceous glands located around nipples. Named after 19th-century Irish obstetrician William Fetherstone Montgomery. Help lubricate nipples during breastfeeding
Boobs can change size during weight loss and gain. Pregnancy causes breasts to grow and stretch. Nursing increases breast size two to three times. Aging leads to sagging and wrinkling of breasts
The five main senses are sight, touch, taste, smell, and hearing. Senses are how our bodies perceive external stimuli. The brain interprets these sensations and activates memories
Jaw is the lower part of face below mouth. Two bones in head where teeth attach. Mandible (lower jaw) is usually movable, maxilla usually fixed