What is a cortical and juxtamedullary nephron?
Cortical nephron is a microscopic structural and functional unit of the kidney with a short loop of Henle. Juxtamedullary nephron is a microscopic structural and functional unit of the kidney with a long loop of Henle. Cortical nephrons have a short loop of Henle, which penetrates only the outer renal medulla.
Do cortical nephrons have Juxtaglomerular apparatus?
Cortical nephrons have short loops of Henle, whereas juxtamedullary nephrons have long loops of Henle extending into the medulla. About 15 percent of nephrons are juxtamedullary. The glomerulus is a capillary bed that filters blood principally based on particle size.
What is the basic unit of nephron?
The nephron is the minute or microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and a cup-shaped structure called Bowman’s capsule.
What are the 3 types of nephron?
By the location of renal corpuscles within the cortex, three types of nephron can be distinguished: superficial, midcortical, and juxtamedullary nephrons.
What is the role of cortical vs Juxtamedullary nephrons?
Cortical nephrons are mainly involved in the excretory and regulatory functions of the body while juxtamedullary nephrons concentrate or dilute urine. Thus, the main difference between cortical nephron and juxtamedullary nephron is their structure and function.
How do cortical and juxtamedullary nephrons differ in function?
Cortical vs Juxtamedullary Nephrons The main function of cortical nephrons is to carry out the major regulatory and excretory functions in the human body while the main function of the Juxtamedullary nephrons is to concentrate or dilute the urine.
How are cortical nephrons different from juxtamedullary nephrons quizlet?
The major difference between cortical nephrons and juxtamedullary nephrons are the length of the loops of Henle. In cortical nephrons, the glomeruli, proximal and distal convoluting ducts, and loops of Henle stay limited to the cortex. In juxtamedullary nephrons, they extend into the medulla.
Which structure is absent or highly reduced in cortical nephrons?
Vasa recta
Video Solution: Assertion: Vasa recta is absent or highly reduced in cortical nephrons. Reason: Cortical nephrons are mainly concerned with concentration of urine. “Assertion: Vasa recta is absent or highly reduced in cortical nephrons. Reason: Cortical nephrons are mainly concerned with concentration of urine.”
What is the Juxtaglomerular apparatus?
The juxtaglomerular apparatus is the location of renin-secreting cells and the macula densa and lies at the junction between the loop of Henle and the distal nephron at which the tubule comes in close proximity to the afferent arteriole.16.
Which is the characteristic feature of Juxtamedullary nephron?
Juxtamedullary nephrons have glomeruli, that are located deep within the cortex, near the cortico-medullary border, and give rise to long-loop nephrons (Figures 1 and 2). These nephrons enter the inner medulla and have a tAL.
What do juxtamedullary nephrons do?
Although both cortical and juxtamedullary nephrons regulate the concentrations of solutes and water in the blood, countercurrent multiplication in the loops of Henle of juxtamedullary nephrons is largely responsible for developing the osmotic gradients that are needed to concentrate urine.
Where are the cortical and juxtamedullary nephron located?
The cortical and juxtamedullary nephron are two different types of kidneys. Both kidneys are essential for the body, but there are some differences between the two. For example, the cortical nephron is located in the cortex of the kidney, while the juxtamedullary nephron is located in the medulla of the kidney.
Where does the loop of Henle of the cortical nephron extend?
The loop of Henle of the cortical nephron extends only to the outer renal medulla while that of the juxtamedullary nephron extends to the deeper of the renal medulla. Cortical nephrons are mainly involved in the excretory and regulatory functions of the body while juxtamedullary nephrons concentrate or dilute urine.
Where are the vasa recta located in the cortical nephron?
Cortical Nephron: Cortical nephron contains a reduced vasa recta. Juxtamedullary Nephron: Juxtamedullary nephron contains a large network of vasa recta. Cortical Nephron: The glomeruli of the cortical nephron is located in the outer renal cortex.
Which is nephron concentrates or dilutes urine?
Juxtamedullary Nephron: The juxtamedullary nephrons concentrate or dilute urine. Cortical Nephron: At the beginning of each cortical nephron, in the outer renal cortex, is located a small glomerulus. Juxtamedullary Nephron: At the beginning of each juxtamedullary nephron is located a large glomerulus.