#eccrine

[alithographica]

Science Fact Friday: Sweat Edition, aka The One Where Jenn Gets Semantic Satiation For The Word Sweat. Sweat sweat sweat sweat. S-weat.

(Apocrine glands are also responsible for pheromone release and territorial scent markings and that stuff - hence why other mammals are covered in apocrine glands.)

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Transcript below the break.

Apocrine Sweat Glands Mammals have two types of sweat glands in their skin: eccrine and apocrine. Eccrine glands secrete the watery substance we call sweat, which helps the body cool itself. Apocrine glands secrete a more opaque liquid that combines with oils from the sebaceous gland. This fluid mixture is odorless until it comes into contact with bacteria on the skin and hair. The fluid then gains the characteristic smell we associate with sweat.

Humans and primates have eccrine glands all over their bodies but apocrine glands in only a few regions. Many other mammals have widely distributed apocrine glands but limited eccrine glands. This is why it is commonly said that dogs can’t sweat. Dogs do have eccrine glands but most are located on their paw pads, resulting in very limited sweating. Instead, dogs pant to regulate their body temperature.

Two illustrations: One, a simplified skin cross section showing how eccrine glands exit directly at the skin’s surface, but apocrine and sebaceous glands are rooted in hair follicles and combine in that area before exiting.

The other, a simplified human form. Highlights indicate where apocrine glands are found: Eyelids, ears, nose, armpits, breasts, and genitalia. Glands in the ears are modified to produce earwax. Glands in the breast are modified to produce milk.

References: http://web.sonoma.edu/users/g/girman/BIO468S99/Character.html

www.mayoclinic.org/diseases-conditions/sweating-and-body-odor/symptoms-causes/syc-20353895

[amicodottore-blog]

Ghiandole sudoripare della pelle

Sono innestate nel derma, ma più in profondità delle sebacee. Hanno la funzione di portare all'esterno il sudore.

[triviaproofing]

#173: “The palms of the hands and soles of the feet contain more sweat glands than any other part of the body.”

True.

Eccrine sweat glands are most common on the palms of the hands, soles of the feet and the forehead.

As a sidenote, those glands are found all over the body except for the lips, penis tip and clitoris.