Kidneys 2 - Anatomy & Nephrons

This lesson covers:

  1. The anatomy of the urinary system, including the kidneys, ureters, bladder, and urethra 
  2. The anatomy of the nephron, including the glomerulus, and the different parts of the tubule

Blood enters the kidneys via the renal and leaves via the renal .

arteries
veins

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Diagram showing the anatomy of the kidneys with labelled parts including the kidneys, ureters, and bladder.

Which letter on this diagram represents the kidneys? 

A

B

C

D

E

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Diagram of kidney anatomy with labelled parts including A, B, C, D, and E.

What is A indicating on this diagram? 

Kidney

Urethra

Ureters

Renal artery

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Diagram of kidney anatomy showing labelled parts including the bladder.

Which letter on this diagram represents the bladder? 

A

B

C

D

E

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Which structure carries urine from the bladder out of the body? 

Nephron

Renal vein

Ureter

Urethra

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Diagram showing the structure of a nephron in the kidney, including the glomerulus, tubules, and collecting duct.

What structure is shown in the diagram above? 

Nephron

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Diagram showing the anatomy of a nephron with the letter X indicating a specific part.

What does the letter X represent on the diagram above?

Loop of Henle

Glomerulus

Collecting duct

Bowman's capsule

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Diagram showing the anatomy of a nephron, including the Bowman's capsule, proximal convoluted tubule, loop of Henle, and distal convoluted tubule.

Identify the Bowman's capsule on the diagram above.

A

B

C

D

E

F

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Between which two structures does filtration (sometimes called ultrafiltration) take place? 

Loop of Henle

Proximal convoluted tubule

Glomerulus 

Bowman's capsule

Ureter

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Diagram showing the structure of a nephron in the kidney.

On the diagram above, the highlighted structure is called the .

collecting
duct

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Illustration showing the convoluted tubules with letter A indicating the proximal convoluted tubule and letter B indicating the distal convoluted tubule.

Letter A indicates the convoluted tubule, whilst letter B represents the convoluted tubule.

proximal
distal

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Diagram highlighting a sub-region of the kidney tubule.

Which sub-region of the tubule is highlighted above?

Loop of Henle

Proximal convoluted tubule

Distal convoluted tubule

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reabsorption is the process whereby certain molecules (e.g. ions, glucose, and amino acids), are reabsorbed from the filtrate, as it passes through the nephron.

Selective

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True or false? Selective reabsorption takes place throughout the nephron.

True

False

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Diagram illustrating the process of urea reabsorption in the kidneys.

How much urea is selectively reabsorbed? 

Almost all

None

It depends on how much we have in the blood already 

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Diagram showing selective reabsorption of potassium and sodium ions.

How many ions are selectively reabsorbed? 

All

None

It depends on how many we already have in the blood

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Diagram showing the molecular structure of glucose with carbon, hydrogen, and oxygen atoms.

How much glucose is selectively reabsorbed? 

None

It depends on how much we have in the blood already 

Almost all

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