Integumentary System Test Questions
And Outlined Answers || 100% Pass ||
Science || Biology || Anatomy
\.What are the basic functions of the Integumentary system? - Answer-✔protection, regulation
of body temperature, communication, excretion of wastes, and vitamin D production
\.What are the three layers of the skin? - Answer-✔Epidermis, Dermis, and
Hypodermis/Subcutaneous
\.What is the structure of the epidermal layer? - Answer-✔thin, superficial layer of mainly
stratified squamous
\.What is the function of the epidermal layer? - Answer-✔cells in deeper layers are living and
dividing that push older cells to the surface where older cells die and fill with keratin to provide
tough, waterproof protection
\.What is the structure of the dermal layer? - Answer-✔widely dispersed cells, highly vascular
\.What are the two functions of the dermal layer? - Answer-✔blood vessels nourish stratum
basale and dermal cells, and constrict/dilate to help regulate body temperature
\.What is the structure of the subcutaneous layer? - Answer-✔connects skin to underlying
structures, composed of adipose and loose connective tissue
, \.What are the three functions of the subcutaneous layer? - Answer-✔insulates, cushions,
energy supply
\.What are the layers of the epidermis? - Answer-✔stratum basale, stratum spinosum, stratum
granulosum, stratum lucidum, and stratum corneum
\.What occurs in the stratum basale? - Answer-✔mitosis, as cells are pushed to the surface they
die due to being cut off from blood supply
\.What occurs in the stratum spinosum? - Answer-✔cells are far enough away from the dermal
blood vessels that they begin to compact and die
\.What occurs in the stratum granulosum? - Answer-✔older cells develop proteins as they die,
precursors to keratin
\.What occurs in the stratum lucidum? - Answer-✔thickened skin on the palms and soles due to
additional wear and tear, most cells are dead and keratin precursors develop
\.What occurs in the stratum corneum? - Answer-✔dead cells are collected and filled with
keratin allowing cells to be tough and offer protection and replace cells worn away by wear and
tear
\.What happens to cells as they are pushed towards the surface? - Answer-✔the farther cells
move, the poorer their nutrient supply becomes and they die
\.How does the integumentary system regulate an increase in body temperature? - Answer-✔as
body temperature rises, nerve impulses stimulate structures in the skin and other organs to
release heat, warmed blood reaches hypothalamus in brain which controls body temperature
and signals muscles in walls of dermal blood vessels to dilate allowing more blood to enter
And Outlined Answers || 100% Pass ||
Science || Biology || Anatomy
\.What are the basic functions of the Integumentary system? - Answer-✔protection, regulation
of body temperature, communication, excretion of wastes, and vitamin D production
\.What are the three layers of the skin? - Answer-✔Epidermis, Dermis, and
Hypodermis/Subcutaneous
\.What is the structure of the epidermal layer? - Answer-✔thin, superficial layer of mainly
stratified squamous
\.What is the function of the epidermal layer? - Answer-✔cells in deeper layers are living and
dividing that push older cells to the surface where older cells die and fill with keratin to provide
tough, waterproof protection
\.What is the structure of the dermal layer? - Answer-✔widely dispersed cells, highly vascular
\.What are the two functions of the dermal layer? - Answer-✔blood vessels nourish stratum
basale and dermal cells, and constrict/dilate to help regulate body temperature
\.What is the structure of the subcutaneous layer? - Answer-✔connects skin to underlying
structures, composed of adipose and loose connective tissue
, \.What are the three functions of the subcutaneous layer? - Answer-✔insulates, cushions,
energy supply
\.What are the layers of the epidermis? - Answer-✔stratum basale, stratum spinosum, stratum
granulosum, stratum lucidum, and stratum corneum
\.What occurs in the stratum basale? - Answer-✔mitosis, as cells are pushed to the surface they
die due to being cut off from blood supply
\.What occurs in the stratum spinosum? - Answer-✔cells are far enough away from the dermal
blood vessels that they begin to compact and die
\.What occurs in the stratum granulosum? - Answer-✔older cells develop proteins as they die,
precursors to keratin
\.What occurs in the stratum lucidum? - Answer-✔thickened skin on the palms and soles due to
additional wear and tear, most cells are dead and keratin precursors develop
\.What occurs in the stratum corneum? - Answer-✔dead cells are collected and filled with
keratin allowing cells to be tough and offer protection and replace cells worn away by wear and
tear
\.What happens to cells as they are pushed towards the surface? - Answer-✔the farther cells
move, the poorer their nutrient supply becomes and they die
\.How does the integumentary system regulate an increase in body temperature? - Answer-✔as
body temperature rises, nerve impulses stimulate structures in the skin and other organs to
release heat, warmed blood reaches hypothalamus in brain which controls body temperature
and signals muscles in walls of dermal blood vessels to dilate allowing more blood to enter
