The efferent arterioles divide to form a network of capillaries, called the , which surround tubular portions of the nephron in the renal cortex. The peritubular capillaries eventually reunite to form and then into . The interlobular veins also receive blood from the vasa recta.
What vessels arise from the efferent arteriole?
The peritubular capillaries is a second capillary network which arise after the efferent arteriole. They surround the proximal tubule, loop of Henle, and distal tubule. Vasa recta are the “straight vessels” which arise from some of the efferent arterioles.
Where is the efferent arteriole?
the kidney
An efferent arteriole is an arteriole that delivers blood away from the capillaries of the kidney. The term ‘efferent’ is used to describe this specific arteriole in this highly specific location in the body: the kidney.
What is between afferent arteriole and efferent arteriole?
Afferent arteriole is a branch of the renal artery that brings in blood to the glomerulus. Efferent arteriole is a branch of the renal artery that drains blood away from the glomerulus. Afferent arteriole carries blood to the glomerulus. Efferent arterioles maintain the glomerular filtration rate.
What are arterioles?
An arteriole is a small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries. Arterioles have muscular walls (usually only one to two layers of smooth muscle cells) and are the primary site of vascular resistance.
What are arterioles quizlet?
Arteriole. a small branch of an artery leading into capillaries. Venule. a very small vein, especially one collecting blood from the capillaries.
What system is the Arteriole in?
An arteriole is a small-diameter blood vessel which forms part of the microcirculation that extends from an artery and leads to capillaries. Capillary: Arterioles are part of the microcirculation system, along with capillaries, arteries, veins, venules, and tissue cells.
What is macula densa?
In the kidney, the macula densa is an area of closely packed specialized cells lining the wall of the distal tubule, at the point where the thick ascending limb of the Loop of Henle meets the distal convoluted tubule. The macula densa is the thickening where the distal tubule touches the glomerulus.
What are capillaries quizlet?
Terms in this set (10) Capillaries. smallest & most numerous of blood vessels; walls are made of 1-layer of endothelium; location of gas & nutrient exchange.
How do arterioles work?
Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. Capillaries lead back to small vessels known as venules that flow into the larger veins and eventually back to the heart.
What is the afferent arteriole?
The afferent arteriole is an arteriole that feeds blood into the glomerulus. The afferent arterioles modulate their vascular resistance in response to changes in intraluminal pressure or composition of tubular fluid at the macula densa. In this manner, they control the glomerular filtration.
What would happen if the afferent arteriole is dilated?
T/F: Dilation of the afferent arteriole would increase glomerular pressure. T/F: Dilation of the afferent arteriole would increase glomerular pressure. T/F: An increased GFR leads to an increase in urine production. A. vasoconstriction of afferent arterioles.
Why are arterioles considered as the primary resistance vessels?
Arterioles are considered as the primary resistance vessels as they distribute blood flow into capillary beds. Arterioles provide approximately 80% of the total resistance to blood flow through the body. Considering they are vital regulators of hemodynamics, contributing to the upstream pressure to the regional distribution of blood.
Where is na+ actively transported in the ascending limb of Henle?
T/F: Na+ is actively transported into the tubule cells of the ascending limb of the Loop of Henle from the tubular lumen. The __________ limb of the loop of Henle is impermeable to water.
