MP NHM CHO-2024 (Shift-2)
Applied Anatomy
Easy
____ type of nephrons have short loops of Henle that do not dip far beyond the cortex.
Appeared in: MP NHM CHO-2024 (Shift-2)
Explanation
- Cortical nephrons are defined by their location in the renal cortex and their characteristic short loops of Henle.
- These short loops descend only into the outer portion of the medulla, which perfectly matches the question's description.
- Constituting about 85% of all nephrons, they are responsible for the majority of the kidney's filtration and regulatory functions under normal physiological conditions.
Why Other Options Were Wrong
- Option B: This is not a recognized anatomical classification of nephrons.
- Option C: This term is anatomically incorrect. Nephrons are classified by the location of their renal corpuscle in the cortex, not the medulla.
- Option D: This is the opposite of the correct answer. Juxtamedullary nephrons are defined by their very long loops of Henle.
Related Visual
- Visual 1: Diagram - A clear illustration comparing a cortical nephron and a juxtamedullary nephron. The diagram should label the cortex, medulla, glomerulus, and highlight the different lengths of the Loop of Henle for each type to visually reinforce the concept.
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy and classification of nephrons based on location and structure as background academic context rather than a clinical decision trigger.
- Understanding the two types of nephrons is fundamental to renal physiology, particularly the mechanism of urine concentration.
- The long loops of juxtamedullary nephrons are critical for creating the medullary osmotic gradient. This gradient allows for water reabsorption from the collecting ducts under the influence of Antidiuretic Hormone (ADH), enabling the body to conserve water.
- What if? If a patient has a condition that selectively damages juxtamedullary nephrons, a primary symptom would be the inability to produce concentrated urine (isosthenuria), leading to polyuria (excessive urination) and difficulty conserving water, even when dehydrated.
How to Approach the Question
- First, identify the key descriptive phrases in the question: 'short loops of Henle' and 'do not dip far beyond the cortex'.
- This is a factual recall question about the anatomy of the kidney's functional unit, the nephron.
- Recall the two main classifications of nephrons: cortical and juxtamedullary.
- Differentiate between them based on the length of their Loop of Henle. The term 'cortical' implies a location primarily in the cortex with short loops, while 'juxtamedullary' (meaning 'next to the medulla') implies long loops that go deep into the medulla.
- Evaluate the options. Eliminate 'papillary' and 'medullary' nephrons as they are not standard anatomical terms.
- Select the option that matches the description of having short loops, which is 'Cortical nephrons'.
Concept Tested & Keywords
- Concept Tested: Anatomy and classification of nephrons based on location and structure.
- Stem keywords: nephrons, short loops of Henle, cortex
- Lead-in keywords: NOT
- Negative lead-in flag: NOT changes the reasoning strategy; look for the exception or incorrect statement rather than the true statement.
Question ID
QabIShZ5MyCBJOqp6PniZ0
Practise the full MP NHM CHO-2024 (Shift-2)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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