BIOD 151 Module 7 - Integumentary
System Exam Questions with Verified
Answers
layers of skin - Answer-1. Epidermis
2. Dermis
3. Hypodermis (subcutaneous layer)
function of skin - Answer-1. absorb UV light for vitamin D production
2. sensory receptors and glands
3. protection from temp. changes
4. protect from miroorganisms
sensory organs - Answer-1. merkel cells
2. missener's corpuscles
3. nociceptors
4. thermoreceptors
5. pacinian corpuscles
merkel cells - Answer-mechanoreceptors
detect mechanical sensory information of light touch
superficial - epidermis
meissener's corpuscles - Answer-mechanoreceptors
detect mechanical sensory information of light touch and vibrations
nociceptors - Answer-pain receptors - several different types
thermoreceptors - Answer-temperature sensory - hot and cold changes
pacinian corpuscles - Answer-mechanical - pressure applied to skin
exocrine glands - Answer-Glands that secrete substances outward through a duct
sebaceous glands - Answer-produce sebum
- prevent skin from drying out and cracking
- prevent growth of microorganisms
sudoriferous glands - Answer-produce sweat (perspiration)
, - regulation of body temperature
multicellular glands - Answer-set within epithelial tissue and release their contents
through a duct to the surface
layers of epidermis - Answer-1. stratum corneum
2. stratum granulosum
3. stratum spinosum
4. stratum basale
*basement membrane
C-ome G-et S-un B-urned
epidermis - Answer-- stratified squamous epithelium
- avascular
- 4 layers
- adhered to basement membrane (between epidermis and dermis)
Cell renewal - Answer-1. cells of stratum basale divide and push toward skin surface
2. superficial layer of stratum contains dead cells that slough off after ~2 weeks at
surface
- renewal of skin cells ~30 days
epidermal ridges - Answer-1. within stratum basale
2. unique to each person
3. creation of fingerprints
cells of epidermis - Answer-1. Keratinocytes
2. Melanocytes
3. Langerhans cells
4. Merkel cells
5. fibroblast cells
FML KM(s)
keratinocytes - Answer-produce keratin - fibrous protein that protects skin/tissue
melanocytes - Answer-produce the pigment melanin that protects against damage by
ultraviolet radiation, skin color
langerhans cells - Answer-immune cells - identify harmful microbes
fibroblast cells - Answer-produce collagen - hold cells together/form, elasticity to skin
System Exam Questions with Verified
Answers
layers of skin - Answer-1. Epidermis
2. Dermis
3. Hypodermis (subcutaneous layer)
function of skin - Answer-1. absorb UV light for vitamin D production
2. sensory receptors and glands
3. protection from temp. changes
4. protect from miroorganisms
sensory organs - Answer-1. merkel cells
2. missener's corpuscles
3. nociceptors
4. thermoreceptors
5. pacinian corpuscles
merkel cells - Answer-mechanoreceptors
detect mechanical sensory information of light touch
superficial - epidermis
meissener's corpuscles - Answer-mechanoreceptors
detect mechanical sensory information of light touch and vibrations
nociceptors - Answer-pain receptors - several different types
thermoreceptors - Answer-temperature sensory - hot and cold changes
pacinian corpuscles - Answer-mechanical - pressure applied to skin
exocrine glands - Answer-Glands that secrete substances outward through a duct
sebaceous glands - Answer-produce sebum
- prevent skin from drying out and cracking
- prevent growth of microorganisms
sudoriferous glands - Answer-produce sweat (perspiration)
, - regulation of body temperature
multicellular glands - Answer-set within epithelial tissue and release their contents
through a duct to the surface
layers of epidermis - Answer-1. stratum corneum
2. stratum granulosum
3. stratum spinosum
4. stratum basale
*basement membrane
C-ome G-et S-un B-urned
epidermis - Answer-- stratified squamous epithelium
- avascular
- 4 layers
- adhered to basement membrane (between epidermis and dermis)
Cell renewal - Answer-1. cells of stratum basale divide and push toward skin surface
2. superficial layer of stratum contains dead cells that slough off after ~2 weeks at
surface
- renewal of skin cells ~30 days
epidermal ridges - Answer-1. within stratum basale
2. unique to each person
3. creation of fingerprints
cells of epidermis - Answer-1. Keratinocytes
2. Melanocytes
3. Langerhans cells
4. Merkel cells
5. fibroblast cells
FML KM(s)
keratinocytes - Answer-produce keratin - fibrous protein that protects skin/tissue
melanocytes - Answer-produce the pigment melanin that protects against damage by
ultraviolet radiation, skin color
langerhans cells - Answer-immune cells - identify harmful microbes
fibroblast cells - Answer-produce collagen - hold cells together/form, elasticity to skin
