Multiple Choice
The functional filtration unit in a kidney is the ______.
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25. The Urinary System
Introduction to the Urinary System
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The kidney has a ______ border called the hilum.
A
medial
B
superior
C
lateral
D
inferior
Verified step by step guidance1
Understand the anatomy of the kidney: The kidney is a bean-shaped organ with a concave border where structures such as the renal artery, renal vein, and ureter enter and exit. This area is called the hilum.
Identify the location of the hilum: The hilum is located on the inner curve of the kidney, which is closest to the midline of the body. This position is referred to as 'medial.'
Review the definitions of the options provided: 'Superior' refers to above, 'lateral' refers to the side away from the midline, and 'inferior' refers to below. None of these terms describe the location of the hilum.
Compare the options to the anatomical position of the hilum: Since the hilum is on the inner curve of the kidney, the term 'medial' is the most accurate descriptor.
Conclude that the correct answer is 'medial' based on the anatomical location of the hilum and the definitions of the terms provided.
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