BIOD 151 Module 7 - Integumentary System (Summary) Questions With Complete Solutions Verified

BIOD 151 Module 7 - Integumentary
System (Summary).
layers of skin
1. Epidermis
2. Dermis
3. Hypodermis (subcutaneous layer)




function of skin
1. absorb UV light for vitamin D production
2. sensory receptors and glands
3. protection from temp. changes
4. protect from miroorganisms




sensory organs
1. merkel cells
2. missener's corpuscles
3. nociceptors
4. thermoreceptors
5. pacinian corpuscles
merkel cells
mechanoreceptors

detect mechanical sensory information of light touch

superficial - epidermis




meissener's corpuscles

, mechanoreceptors

detect mechanical sensory information of light touch and vibrations




nociceptors
pain receptors - several different types
thermoreceptors
temperature sensory - hot and cold changes




pacinian corpuscles
mechanical - pressure applied to skin
exocrine glands
Glands that secrete substances outward through a duct




sebaceous glands
produce sebum

- prevent skin from drying out and cracking
- prevent growth of microorganisms




sudoriferous glands
produce sweat (perspiration)

- regulation of body temperature