Ch. 5-8 Integumentary Exocrine Glands Flashcards
sebaceous (oil) glands
- HOLOCRINE GLANDS
- SIMPLE BRANCHED ALVEOLAR
- glands communicate with a single follicle and share a duct*
- discharge oil lipid secretion onto the hair follicles
sebum
Secreted lipid product of sebaceous glands. DIscharged directly onto the skin surface.
– Contains lipids and other ingredients
– Lubricates and protects the epidermis
– Inhibits bacteria
Sebaceous follicles
- large sebaceous glands that are not associated with hair follicles.
- ducts discharge discharge directly onto epidermis.
- Face, back, chest, nipples, and external genitalia
structure of sebaceous glands and follicles
What are the two types of sweat glands and their locations?
-
Apocrine
- armpits (axillae), nipples, pubic region -
Merocrine (eccrine)
- numerous and widely distributed
sudoriferous glands
sweat glands
sweat glands
sudoriferous glands
apocrine sweat glands
*** MEROCRINE SECRETION ***
Coiled, tubular glands
– Secrete products into hair follicles
– Produce sticky, cloudy secretions
– Break down and cause odors
myoepitheleal cells
- Special cells that surround the apocrine sweat glands
- Contract and squeeze causing the discharge of sweat into hair follicles
- Respond to hormonal or nervous signal
Merocrine (eccrine) sweat glands
MEROCRINE
COILED TUBULAR GLANDS
- Discharge directly onto the skin surface
- Water secretions
- Sensible perspiration
FUNCTIONS:
- Cooling & Thermal Regulation
- Excreting water/electrolytes
- Protection - dilute chemicals, flush organisms, produce demicidin - antibiotic peptide
mammary glands
related to apocrine glands. Located in integumentary breast tissue.
ceruminous glands
- modified sweat glands in the passageway of the external ear.
- Secretions combine with sebaceous glands, forming earwax (cerumen)
How are sebaceous and apocrine glands controlled?
By the autonomic nervous system. Works simulatenously over entire body.
How are merorcrine sweat glands controlled?
independently, locally (sweaty palms)
thermoregulation
- Main function of sensible perspiration
- Works with cardiovascular system
- temperature homeostasis
*** MEROCRINE SECRETION ***
Coiled, tubular glands
– Secrete products into hair follicles
– Produce sticky, cloudy secretions
– Break down and cause odors
apocrine sweat glands
- Special cells that surround the apocrine sweat glands
- Contract and squeeze causing the discharge of sweat into hair follicles
- Respond to hormonal or nervous signal
myoepitheleal cells
MEROCRINE
COILED TUBULAR GLANDS
- Discharge directly onto the skin surface
- Water secretions
- Sensible perspiration
FUNCTIONS:
- Cooling & Thermal Regulation
- Excreting water/electrolytes
- Protection - dilute chemicals, flush organisms, produce demicidin - antibiotic peptide
Merocrine (eccrine) sweat glands
- modified sweat glands in the passageway of the external ear.
- Secretions combine with sebaceous glands, forming earwax (cerumen)
ceruminous glands
