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A2 Biology
Structure of Mammalian Kidney A2 Bio-p324
7
Biology
12th Grade
12/02/2007

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Term

 

 

How is each kidney supplied with oxygenated blood and drained of deoxygenated blood?

Definition

 

  • A renal artery carries oxygenated blood from the aorta to the kidneys,
  • and a renal vein carries deoxygenated blood to the vena cava
Term

 

 

How does urine produced in the kidneys leave the body?

Definition

 

  • By muscular contraction the urine passes down the ureter           
  • Into a muscular bag called the bladder
  • When the sphincter at the base of the bladder is relaxed
  • The urine passes down the urethra and out of the body
Term

 

What is the term for the elimination of urine fromthe body?

Definition

 

  • Urination or Micturition
Term

 

Is urination voluntary?

 

Definition

 

  • It is originally an autonomic reflex reaction
  • but we learn to exert voluntary control over it.

 

 

Term
How does Urination happen?
Definition

 

  • Stretch receptors in the bladder wall triggers a response causing it to contract
  • and the sphincter to relax
Term

 

The kidney is enclosed within a protective                        and shows distinct regions. The outer region, the            , has a more uneven texture than the inner               . This section had zones called              which surround the central cavity, the           . This cavity is continuous with the            .

Definition

 

  • Fibrous Capsule
  • Cortex
  • Medulla
  • Pyramids
  • Pelvis
  • Ureter
Term

What is the kidney made of?

Definition

 

  • A little connective tissue
  • And nephrons; microscopic tubules with a rich blood supply
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