I 1.5

Question 1

Skin Glands

Answer 1

Sebaceous (Oil) Glands, Eccrine Sweat Glands, Apocrine Sweat Glands, Ceruminous Glands

Question 2

Distribution: Largely in lips, glans penis, labia minora, and tarsal glands; small in trunk and limbs; absent in palms and soles

Location of secretory portion: Dermis

Termination of excretory duct: Most connected to hair follicle

Secretion: Sebum (mixture of triglycerides, cholesterol, proteins, and inorganic salts)

Functions: Prevents hairs from drying out, prevent water loss from skin, keep skin soft, inhibit growth of some bacteria

Onset of function: Relatively inactive during childhood; activated during puberty

Answer 2

Sebaceous (Oil) Glands

Question 3

Distribution: Throughout skin of most regions of the body, especially skin of forehead, palms, and soles

Location of secretory portion: Mostly in deep dermis (sometimes in upper subcutaneous layer)

Termination of excretory duct: Surface of epidermis

Secretion: Perspiration, which consists of water, ions (Na+, Cl-), urea, uric acid, ammonia, amino acids, glucose, and lactic acid

Functions: Regulation of body temperature, waste removal, stimulated during emotional stress

Onset of function: Soon after birth

Answer 3

Eccrine Sweat Glands

Question 4

Distribution: Skin of axillae, groin, areolae, bearded regions of the face, clitoris, and labia minora

Location of secretory portion: Mostly in deep dermis and upper subcutaneous layer

Termination of excretory duct: Hair follicles

Secretion: Perspiration, which consists of the same components as eccrine sweat glands plus lipids and proteins

Functions: Stimulated during emotional stress and sexual excitement

Onset of function: Puberty

Answer 4

Apocrine Sweat Glands

Question 5

Distribution: Throughout skin of
most regions of
the body,
especially skin of
forehead, palms,
and soles

Location of secretory portion: Dermis

Termination of excretory duct: Most connected to hair follicle

Secretion: Sebum (mixture of triglycerides, cholesterol, proteins, and inorganic salts)

Functions: Prevents hairs from drying out, prevent water loss from skin, keep skin soft, inhibit growth of some bacteria

Onset of function: Relatively inactive during childhood; activated during puberty