Homeostasis Flashcards
Homeostasis definition
Maintaining a constant internal environment despite changes in the external one
In the body, what needs to be kept constant? (4)
- temperature
- water
- pH
- glucose
Is homeostasis negative or positive feedback?
Negative
What is a dermis
Layer of skin just beneath the epidermis
Layer of skin just beneath the epidermis
Dermis
What is an epidermis
The outer layer of the skin
The outer layer of the skin
Epidermis
What is a hair follicle
Sheath surrounding part of the hair under the skin
Sheath surrounding part of the hair under the skin
Hair follicle
Where is the hair follicle located
In dermis and epidermis
What is located in the dermis and epidermis
Hair follicle
What is a hair shaft
Part of the hair above the skin
Part of the hair above the skin
Hair shaft
What is a hair erector muscle
Muscle connected to hair follicle and skin and produces an erect hair when contracted
Muscle connected to hair follicle and skin and produces an erect hair when contracted
Hair erector muscle
What is a pacinian corpuscle
Nerve receptors that respond to pressure and vibration
Nerve receptors that respond to pressure and vibration
Pacinian corpuscle
What is the sebaceous gland
Releases oily liquids onto hair follicle to lubricate skin
Releases oily liquids onto hair follicle to lubricate skin
Sebaceous gland
What is a sweat gland
Releases sweat onto skin
Releases sweat onto the skin
Sweat gland
What is a subcutaneous tissue
Fatty tissue located under the dermis
Fatty tissue located under the dermis
Subcutaneous tissue
