BSC 2085 EXAM 2 Question and Answer
2026 A+ Verified 100% Correct
Questions and Answers
• epidermis -✓✓superficial region of skin
• dermis -✓✓middle region of skin
• hypodermis -✓✓deepest region of skin that attaches skin to underlying tissues
and organs
• keratinocytes -✓✓produce keratin
• melanocytes -✓✓produce melanin
• Tactile (Merkel) Cells -✓✓touch receptors
• stratum basale -✓✓single row of stem cells, deepest part of the epidermis,
attached to the dermis
• stratum spinosum -✓✓full of spine, cells contain a weblike system of
intermediate prekeratin filaments, abundant melanin granules and dendritic cells
• stratum granulosum -✓✓full of grain, thin; three to five cell layers in which the
cells flatten
• stratum lucidum -✓✓clear (thin/transparent) layer (thick skin), a few rows of flat,
dead keratinocytes
• stratum corneum -✓✓outermost layer, 3/4 of epidermis thickness, 20-30 rows of
dead, flat keratinized membranous sacs
• dermis -✓✓strong, flexible connective tissue with two layers: papillary and
reticular
, • papillary layer -✓✓layer of the dermis with collagen and elastic fibers, and blood
vessels (meissner's corpuscles, free nerve endings, capillary loops)
• reticular layer -✓✓layer of the dermis that is 80% of it's thickness
• three pigments that contribute to skin color -✓✓melanin, carotene, and
hemoglobin
• melanin -✓✓yellow to reddish-brown to black, responsible for dark skin colors.
produced in melanocytes, freckles and pigmented moles
• carotene -✓✓yellow to orange; most obvious in palms and soles
• hemoglobin -✓✓responsible for the pinkish hue of the skin
• sudoriferous glands -✓✓sweat glands
• eccrine sweat glands -✓✓abundant on palms, soles, and forehead (Sweat) ducts
connect to pores
• apocrine sweat glands -✓✓confined to axillary and anogenital areas (SEBUM)
ducts connect to hair follicles
• ceruminous glands -✓✓in external ear canal; secrete cerumen
• sebaceous glands -✓✓oil glands
• sebum -✓✓oily holocrine secretion
bactericidal
softens hair and skin
• hair follicle -✓✓extend from epidermal surface into dermis, two layered wall
• hair follicle receptor -✓✓sensory nerve endings around each hair bulb; simulated
by bending a hair
• arrector pili -✓✓smooth muscle attached to follicle, responsible for goosebumps
2026 A+ Verified 100% Correct
Questions and Answers
• epidermis -✓✓superficial region of skin
• dermis -✓✓middle region of skin
• hypodermis -✓✓deepest region of skin that attaches skin to underlying tissues
and organs
• keratinocytes -✓✓produce keratin
• melanocytes -✓✓produce melanin
• Tactile (Merkel) Cells -✓✓touch receptors
• stratum basale -✓✓single row of stem cells, deepest part of the epidermis,
attached to the dermis
• stratum spinosum -✓✓full of spine, cells contain a weblike system of
intermediate prekeratin filaments, abundant melanin granules and dendritic cells
• stratum granulosum -✓✓full of grain, thin; three to five cell layers in which the
cells flatten
• stratum lucidum -✓✓clear (thin/transparent) layer (thick skin), a few rows of flat,
dead keratinocytes
• stratum corneum -✓✓outermost layer, 3/4 of epidermis thickness, 20-30 rows of
dead, flat keratinized membranous sacs
• dermis -✓✓strong, flexible connective tissue with two layers: papillary and
reticular
, • papillary layer -✓✓layer of the dermis with collagen and elastic fibers, and blood
vessels (meissner's corpuscles, free nerve endings, capillary loops)
• reticular layer -✓✓layer of the dermis that is 80% of it's thickness
• three pigments that contribute to skin color -✓✓melanin, carotene, and
hemoglobin
• melanin -✓✓yellow to reddish-brown to black, responsible for dark skin colors.
produced in melanocytes, freckles and pigmented moles
• carotene -✓✓yellow to orange; most obvious in palms and soles
• hemoglobin -✓✓responsible for the pinkish hue of the skin
• sudoriferous glands -✓✓sweat glands
• eccrine sweat glands -✓✓abundant on palms, soles, and forehead (Sweat) ducts
connect to pores
• apocrine sweat glands -✓✓confined to axillary and anogenital areas (SEBUM)
ducts connect to hair follicles
• ceruminous glands -✓✓in external ear canal; secrete cerumen
• sebaceous glands -✓✓oil glands
• sebum -✓✓oily holocrine secretion
bactericidal
softens hair and skin
• hair follicle -✓✓extend from epidermal surface into dermis, two layered wall
• hair follicle receptor -✓✓sensory nerve endings around each hair bulb; simulated
by bending a hair
• arrector pili -✓✓smooth muscle attached to follicle, responsible for goosebumps
