TRU BIOL 1593 INTEGUMENTARY
EXAM QUESTIONS AND ANSWERS
Epidermis - Correct Answers -the superficial portion of the skin, composed of epithelial
tissue
Dermis - Correct Answers -the deeper layer of the skin, primarily composed of
connective tissue
subcutaneous layer (Sub Q) or hypodermis - Correct Answers -lies deep within the
dermis. It consists of areolar and adipose tissue. It serves as an area for fat storage,
blood vessel passage, and pressure nerve endings.
Name the layers of the skin - Correct Answers -epidermis, dermis. Subcutaneous layer
is not part of the skin, but deep within the dermis
What are the four cell types in epidermis - Correct Answers -The epidermis is composed
of stratified squamous epithelium and contains four principal types of cells:
Keratinocytes, Melanocytes, Langerhans cells, Merkel cells
Keratinocytes - Correct Answers -produce the protein keratin, which helps protect the
skin and underlying tissue from heat, microbes, and chemicals. Keratin produces
lamellar granules, which release a waterproof sealant.
Melanocytes - Correct Answers -produce the pigment melanin, which contributes to skin
colour and absorbs damaging ultraviolet (UV) light.
Langerhans cells - Correct Answers -participate in immune responses.
Merkel cells - Correct Answers -touch a sensory structure called a tactile (Merkel) disc,
and function in the sensation of touch.
List the 4/5 layers in the epidermis from superficial to deep - Correct Answers -stratum
corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
The stratum basale - Correct Answers -is the deepest layer of the epidermis and
contains some stem cells capable of undergoing cell division to form new cells. This
EXAM QUESTIONS AND ANSWERS
Epidermis - Correct Answers -the superficial portion of the skin, composed of epithelial
tissue
Dermis - Correct Answers -the deeper layer of the skin, primarily composed of
connective tissue
subcutaneous layer (Sub Q) or hypodermis - Correct Answers -lies deep within the
dermis. It consists of areolar and adipose tissue. It serves as an area for fat storage,
blood vessel passage, and pressure nerve endings.
Name the layers of the skin - Correct Answers -epidermis, dermis. Subcutaneous layer
is not part of the skin, but deep within the dermis
What are the four cell types in epidermis - Correct Answers -The epidermis is composed
of stratified squamous epithelium and contains four principal types of cells:
Keratinocytes, Melanocytes, Langerhans cells, Merkel cells
Keratinocytes - Correct Answers -produce the protein keratin, which helps protect the
skin and underlying tissue from heat, microbes, and chemicals. Keratin produces
lamellar granules, which release a waterproof sealant.
Melanocytes - Correct Answers -produce the pigment melanin, which contributes to skin
colour and absorbs damaging ultraviolet (UV) light.
Langerhans cells - Correct Answers -participate in immune responses.
Merkel cells - Correct Answers -touch a sensory structure called a tactile (Merkel) disc,
and function in the sensation of touch.
List the 4/5 layers in the epidermis from superficial to deep - Correct Answers -stratum
corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
The stratum basale - Correct Answers -is the deepest layer of the epidermis and
contains some stem cells capable of undergoing cell division to form new cells. This
