the integumentary system Flashcards
structures, functions and components
what is the integumentary system?
it is a compromise of skin and appendages
it protects the body from damage eg. water loss and abrasions
it is the largest organ of the body due to its component
what is the epidermis?
it is the waterproof outer layer
keeps pathogens out
it is elastic and gives the skin colour
what is the dermis?
it is the middle layer
it contains hair follicles, nerves, blood vessels and glands
it regulates body temperature
what is subcutaneous layer?
it is made of connective tissue
it contains high amounts of fat to provide insulation and shape
list the components of the integumentary system
hair
skin
claws/nails
glands
horns/antlers
state and explain the different exocrine glands and what they secrete
sudoriferous- secrete sweat
sebaceous- secrete sebum which keeps hair and skin lubricated
ceruminous- specialised sudoriferous glands which secrete ear wax
state the hair structure?
it is made of keratin and is produced by follicles
state the different types and meanings of hair structures
~ Downy hair- soft, fine and dense hairs,
undercoat.
~ Dermis- thick, longer and stiff
protective outer coat
guard hair surrounded by 6-12 downy hairs
~ Tactile- vibrissae, or whiskers
thicker and extend
Name the 3 different types of glands
Sweat glands
Waterproof and lubricating sebaceous glands
Eat wax ceruminous glands
Name the function of the waterproofing and lubricating glands
Sebaceous glands secrete sebum, waterproofs skin and lubricates hair
Where are sweat glands active in dogs and cats
The foot pads
What is the hair structure?
Made of keratin and is produced by follicles
Describe the features of Downy hairs
Soft, fine and dense hairs
Produce the undercoat
Describe the features of the dermis hairs
Thick
longer than downy hairs
Stiff
Protective outer coat
Guard hairs surrounded by 6-12 downy hairs
Describe the features of tactile hairs
Vibrissae or whiskers
Thicker
