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Renal medulla
The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x
![Straight tubules <p>The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x</p>](https://digitalhistology.org/wp-content/uploads/2018/02/Or.Ur_.OV-6-1-ping.png)
Straight tubules
The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x
![Thin limbs <p>The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x</p>](https://digitalhistology.org/wp-content/uploads/2018/02/Or.Ur_.OV-6-2-ping.png)
Thin limbs
The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x
![Collecting ducts <p>The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x</p>](https://digitalhistology.org/wp-content/uploads/2018/02/Or.Ur_.OV-6-3-ping.png)
Collecting ducts
The medulla contains the straight portions of the proximal and distal tubules, the thin limbs of the loops of Henle, and collecting ducts. Because of their linear course through the medullary pyramid, these tubules are usually seen in longitudinal section, lying parallel to one another. 200x, 20x