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Biology > Excretion > Flashcards

Excretion Flashcards

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1
Q

What is vasoconstriction?

A

Blood vessels in the skin get smaller

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2
Q

What are ectotherms?

A

Gain or lose heat from or to their external environment

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3
Q

What are endotherms?

A

Generate their own heat from metabolic reactions

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4
Q

What is vasodilation?

A

Blood vessel expand

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5
Q

What is the function of the skin?

A 
Protection
Vit production
Food store
Sense organ
Excretion
Temp reg
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6
Q

What layer is melanin found in?

A

Malpighian

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7
Q

What is the function of the dermis?

A

Protect internal organs from bumps and bangs

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8
Q

What is sebum for?

A

Prevent hair and skin drying out

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9
Q

What is the function of the epidermis?

A

Barrier to prevent water loss and entry of pathogens

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10
Q

What is the function of melanin?

A

Protect skin from UV radiation

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11
Q

What is piloerection?

A

Hairs stand up on skin

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12
Q

What is filtration?

A

Movement of small molecules and water from the blood plasma into the nephron

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13
Q

What is reabsorption?

A

Movement of small molecules from the nephron into the blood

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14
Q

What Is the function of the cortex?

A

Filtration

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15
Q

What is the function if the medulla?

A

Reabsorption

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16
Q

How is the glomerulus adapted to do its job?

A

1) Blood pressure is higher than average bp
2) Surface are is large- more area for filtration
3) Capillaries are move porous than normal capillaries

17
Q

What is the function of the proximal convoluted tubule?

A

Absorb the most water and small molecules

18
Q

How is the proximal convoluted tubule adapted to do its job?

A

1) Long
2) Thin
3) High concentration of mitochondria- ATP for active transport

19
Q

What is the function of the distal convoluted tubule?

A

Control salt and pH value of blood

20
Q

What is the function of the descending loop of Henle?

A

Reabsorb water

21
Q

What is the function of the ascending loop of Henle?

A

1) reabsorb salt via diffusion
2) reabsorb salt via active transport (higher up)
3) reabsorb water

22
Q

What is homeostasis?

A

The ability of an organism to maintain a constant internal environment

23
Q

What is the function of the kidneys?

A

1) Excretion
2) Osmoregulation
3) pH control

24
Q

What is filtration?

A

Movement of small molecules and water from the blood plasma into the nephron

25
Q

What is reabsorption?

A

Movement of small molecules from the nephron into the blood

26
Q

What Is the function of the cortex?

A

Filtration

27
Q

What is the function if the medulla?

A

Reabsorption

28
Q

How is the glomerulus adapted to do its job?

A

1) Blood pressure is higher than average bp
2) Surface are is large- more area for filtration
3) Capillaries are move porous than normal capillaries

29
Q

What is the function of the proximal convoluted tubule?

A

Absorb the most water and small molecules

30
Q

How is the proximal convoluted tubule adapted to do its job?

A

1) Long
2) Thin
3) High concentration of mitochondria- ATP for active transport

31
Q

What is the function of the distal convoluted tubule?

A

Control salt and pH value of blood

32
Q

What is the function of the descending loop of Henle?

A

Reabsorb water

33
Q

What is the function of the ascending loop of Henle?

A

1) reabsorb salt via diffusion
2) reabsorb salt via active transport (higher up)
3) reabsorb water

34
Q

What is homeostasis?

A

The ability of an organism to maintain a constant internal environment

35
Q

What is the function of the kidneys?

A

1) Excretion
2) Osmoregulation
3) pH control

Biology (25 decks)

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