Advertisement Upgrade to remove ads

Five types of Skin glands

-Merocrine Sweat(sudoriferous) glands
-Apocrine Sweat(sudoriferous) glands
-Sebaceous glands
-Ceruminous glands
-Mammary glands

Mecrocrine(eccrine) sweat glands

Most numerous sweat glands(3-4 million in adult)
-simple tubular glands w/ watery perspiration to cool body
-myoepithelial cells:Contract in response to stimulation by sympathetic nervous sys. & squeeze perspiration up to duct

Apocrine Sweat glands

In groin,anal region,axilla,areola, bearded area of males/devel. in puberty
-ducts lead to nearby hair follicles & produce sweat that is milky and contain fatty acids
-Scent glands that respond to stress/sexual stimulation
-Pheromones:Chemicals that influence the physiology of behavior of other species mem.
-Bromhidrosis: Disagreeable body odor prod. by bacterial action on fatty acids

Sweat

Begins as protein free filtrate of blood plasma prod. by deep secretory portion of gland
-Potassium ions,urea,lactic acid, ammonia and some sodium chloride remain in sweat, most sodium chloride reabsorbed by duct
-Insensible perspiration: doesn't prod. visible wetness skin
-Diaphoresis-Sweating w/ wetness of skin

Sebaceous Glands

-Sebum-Oily secretion prod. by seb. glands
-Flask-shaped glands w/ short ducts opening into hair follicle
-Holocrine gland- Secretion consists of broken down cells
-replaced by mitosis at base gland
-Keeps skin and hair from becoming dry,brittle and cracked
-Lanolin-Sheep sebum

Ceruminous Glands

Only in external ear canal;Secretion combines w/ sebum & dead epithelial cells to form earwax(cerumen)
-Keeps eardrum flexible;waterproofs the canal;Kill bacteria & makes guard hairs of ear sticky to block foreign particles

Mammary Glands

Breasts(mammae) of both sexes contain very little grandular material
-milk prod. glands that dev. only during pregnancy/lactation
-modified apocrine sweat glands/richer secretion released thru nipples
-Mammary ridges/lines:two rows of mammary glands in most animals,primates kept only anterior most glands
-Additional nipples(polythelia)may devel. along milk line

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set