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OCR Gateway Biology > Homeostasis > Flashcards

Homeostasis Flashcards

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1
Q

Homeostasis definition

A

Maintaining a constant internal environment despite changes in the external one

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2
Q

In the body, what needs to be kept constant? (4)

A
  • temperature
  • water
  • pH
  • glucose
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3
Q

Is homeostasis negative or positive feedback?

A

Negative

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4
Q

What is a dermis

A

Layer of skin just beneath the epidermis

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5
Q

Layer of skin just beneath the epidermis

A

Dermis

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6
Q

What is an epidermis

A

The outer layer of the skin

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7
Q

The outer layer of the skin

A

Epidermis

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8
Q

What is a hair follicle

A

Sheath surrounding part of the hair under the skin

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9
Q

Sheath surrounding part of the hair under the skin

A

Hair follicle

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10
Q

Where is the hair follicle located

A

In dermis and epidermis

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11
Q

What is located in the dermis and epidermis

A

Hair follicle

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12
Q

What is a hair shaft

A

Part of the hair above the skin

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13
Q

Part of the hair above the skin

A

Hair shaft

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14
Q

What is a hair erector muscle

A

Muscle connected to hair follicle and skin and produces an erect hair when contracted

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15
Q

Muscle connected to hair follicle and skin and produces an erect hair when contracted

A

Hair erector muscle

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16
Q

What is a pacinian corpuscle

A

Nerve receptors that respond to pressure and vibration

17
Q

Nerve receptors that respond to pressure and vibration

A

Pacinian corpuscle

18
Q

What is the sebaceous gland

A

Releases oily liquids onto hair follicle to lubricate skin

19
Q

Releases oily liquids onto hair follicle to lubricate skin

A

Sebaceous gland

20
Q

What is a sweat gland

A

Releases sweat onto skin

21
Q

Releases sweat onto the skin

A

Sweat gland

22
Q

What is a subcutaneous tissue

A

Fatty tissue located under the dermis

23
Q

Fatty tissue located under the dermis

A

Subcutaneous tissue

OCR Gateway Biology (13 decks)

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