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Animal Biology > Excretory system > Flashcards

Excretory system Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What is the function of the excretory system

A

Eliminate waste products from the bloodstream

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2
Q

Why does the excretory system eliminate waste products from the bloodstream, give 2 reasons

A

Maintain homeostasis

Prevent damage to the body

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3
Q

Put the following organs in the right order:

Bladder, Kidney, Ureter, Urethra

A

Kidney, Ureter, Bladder, Urethra

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4
Q

What are the 6 functions of the kidney

A 
Ion balance
Osmotic balance
Blood pressure
pH balance
Excretion
Hormone production
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5
Q

What is the outer layer of the kidney called?

A

Renal cortex

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6
Q

What is the middle layer of the kidney called?

A

Renal medulla

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7
Q

What is the inside of the kidney called?

A

Renal pelvis

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8
Q

What happens in the glomerulus?

A

This nutrients get filtered through the capillary walls because of high pressure into the bowman capsule

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9
Q

In what order does the fluid move through the lumen

A

Proximal convuluted tubule, loop of Henle, distal convoluted tubule

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10
Q

Which 4 processed occur in the nephron?

A

Filtration, reabsorption, secretion, excretion

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11
Q

What is reabsorption

A

Recovery of substances from the urine to the blood

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12
Q

What is secretion

A

Transferring solutes from the blood to the urine

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13
Q

What ways of transport are used during reabsorption§

A

A combination of difussion and active transport

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14
Q

What ways of transport are used during secretion?

A

Transporters in the cell wall

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15
Q

Where does filtration happen in the nephron?

A

Glomerulus

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16
Q

Where does reabsorption happen in the nephron

A

Proximal convoluted tubule, distal convuluted tubule, collecting duct

17
Q

Where does secretion happen?

A

Loop op Henle, Distal convoluted tubule, collecting duct

18
Q

Why are is there no protein in the urine?

A

Because protein molecules are too big

19
Q

Which component are in bloodplasma and primary urine but not in the final urine?

A

Glucose, Amino-acids

20
Q

Which components have the highest concentration in urine?

A

Urea, Salts

21
Q

What is the function of ADH

A

Recovery of water by increasing the reabsorption of water in the collecting duct

22
Q

What is the function of Aldosterone?

A

Regulating sodium and potassium balance, by stimulating Na+ reabsorption and enhances K+ excretion

23
Q

Vasopressin is a different name for…

A

ADH

24
Q

What does ADH stand for?

A

Antidiuretic hormone

25
Q

What is the function of the bladder?

A

Collect urine

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