The diagram shows a section through a human kidney - Leaving Cert Biology - Question a - 2005
Question a
The diagram shows a section through a human kidney.
(i) Name A, B, C, D.
(ii) To what structure does D connect the kidney?
(iii) Filtration is an essential proces... show full transcript
Worked Solution & Example Answer:The diagram shows a section through a human kidney - Leaving Cert Biology - Question a - 2005
Step 1
Name A, B, C, D.
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Answer
A = cortex, B = medulla/pyramid, C = pelvis, D = ureter.
Step 2
To what structure does D connect the kidney?
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Answer
D connects to the bladder.
Step 3
Filtration is an essential process in the formation of urine. In what part of the kidney does it take place?
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Answer
Filtration takes place in the cortex (A), specifically in the nephron, within the glomerulus/Bowman's capsule.
Step 4
Reabsorption of useful substances takes place in the kidney. In what part does this occur?
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Answer
Reabsorption occurs in the medulla (B), particularly in the nephron's convoluted tubule and loop.
Step 5
Name an excretory substance present in urine.
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Answer
Urea.
Step 6
Name an excretory organ in the human body other than the kidney. Name a substance, other than the one you have named in (v), excreted by this organ.
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The skin/lungs/liver is an excretory organ. Water, carbon dioxide, salt, bile, or sweat can be substances excreted by these organs.
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