3.2 glands

exocrine glands

secrete product into a duct system to go to target

endocrine glands

ductless; these secrete product into capillary network

how do we classify secretory portion of exocrine glands

acinar (round), tubular (oval), coiled

how do we classify duct portion of exocrine glands

simple (unbranched) or compound (branched

where can we find Simple unbranched tubular glands

small intestine

where can we find Simple columnar epithelium

goblet cells in intestine

where can we find Simple branched tubular gastric gland

stomach, GI tract

where can we find Simple coiled tubular gland

sweat glands

where can we find Simple branched acinar glands

sebaceous/oil gland

where can we find Compound tubloacinar gland

sublingual, submandibular, and lacrimal gland

functional classifications of exocrine glands

merocrine, holocrine, apocrine

how does merocrine glands work

release by exocytosis

how does holocrine glands work

discharge of whole secretory cells

how does apocrine glands work

discharge of membrane-bound vesicles

example of merocrine glands

sweat/sudoriferous glands

example of holocrine glands

oil/sebaceous glands

where is lacrimal gland located

in orbital (close to bone orbital structure) and palpebral (closest to eyelid) regions

function of lacrimal gland

Produce proteinaceous secretions, contribute to tear production and eye lubrication

what are the glands of the eyelid

meibomian glands, glands of zeis, and glands of moll

meibomiam gland: oil or sweat

oil gland

glands of zeis gland: oil or sweat

oil gland

gland of moll: oil or sweat

sweat gland

function of meibomian glands

delays tear film evaporation and lubricates and protects cornea

function of glands of zeis

produce the oily (lipid) component of the tear film and attaches to lash follicles

what is the functional classification of glands of moll

apocrine gland

function of outer (oil) layer in tear film

lubricates and prevents evaporation

what is outer (oil) layer in tear film secreted by

meibomian glands and glands of Zeis

function of middle aqueous (water) layer in tear film

hydrates and provides nutrients

what is middle aqueous (water) layer in tear film secreted by

lacrimal glands

function of inner mucous layer of tear film

ensures even distribution across the cornea, adheres tears film to the eye or surface of cornea

what is inner mucous layer of tear film secreted by

goblet cells of conjunctiva which secretes mucin

function of tear film

maintain eye hydration, provides lubrication, and protects against pathogens

what is Chalazion

slow-growing, painless lump of inflammatory tissue on the eyelid caused by a blocked oil gland (Meibomian gland) that leads to inflammation