CH5 Integumentary system lab/lecture notes

Sebaceous gland’s location:

associated with hair follicles (thin skin)

Sebaceous gland’s structure:

simple, branched acinar

Sebaceous glands mode of secretion:

holocrine

sebaceous gland’s secretory product:

sebum (oily substance)

Function of sebum:

moisturizes, waterproofs, and inhibits microbial growth

Eccrine sudoriferous gland’s location:

Found everywhere in the body, highest concentration in hands and feet. Most numerous type of sudoriferous gland

Eccrine sudoriferous gland’s structure:

simple, coiled tubular glands

eccrine sudoriferous gland’s mode of secretion:

merocrine

eccrine sudoriferous gland’s secretory product:

“watery” sweat

function of “watery” sweat:

thermoregulation and minor excretion

Apocrine sudoriferous gland’s location:

in axilla, inguinal, areola, and bearded regions

Apocrine sudoriferous gland’s structure:

simple, coiled tubular (larger overall gland than eccrine sudoriferous gland)

Apocrine sudoriferous gland’s mode of secretion:

NOT apocrine, IT IS MEROCRINE

Apocrine sudoriferous gland’s secretory product:

“organic” sweat that contains proteins and lipids, which causes body odor as a result of bacteria consuming this sweat.

Function of “organic” sweat:

produced during emotional or sexual activity, may be useful for mate choice

Ceruminous gland’s location:

lateral 1/3 of the ear canal

ceruminous gland’s structure

simple, coiled tubular (again, but for ceruminous gland)

ceruminous gland’s mode of secretion:

merocrine (again, but for ceruminous)

ceruminous gland’s secretory product:

cerumen (earwax)

function of cerumen (earwax)

provides waterproofing and some microbial growth.