I. Label the indicated structures. II. What is the name of the structure that le
ID: 83283 • Letter: I
Question
I. Label the indicated structures.
II. What is the name of the structure that leads to or opens to the component labeled with an A?
III. Name the process that occurs in urine formation in the structure you named in part II.
IV. Name the blood vessels that form inside the part you named in II; the blood vessels that surround parts A and C; and the blood vessels that surround the nephron component labeled with an E?
V. What structure does the part labeled with a C lead to?
VI. What process occurs to form urine in the part labeled with an A and what are the important molecules involved?
VII. What process or processes occur to form urine in the part labeled with a C and what are the important molecules involved?
VIII. Name the hormone that functions in the areas of a nephron as indicated in part C and in your answer to V above. Describe briefly how it functions and name its site of origin.
B C A DExplanation / Answer
A: Proximal tube
B: Efferent arteriole
C: Distal tube
D: Afferent arteriole
E: Loop of Henle
II The glomerulus
III group of capillaries in the nephron that filter the blood to make urine.
IV afferent arteriole
b. efferent arterioles that surround part A and afferent arteriole that surround part C.
c: afferent arteriole that surround nephron component labeled with an E.
V Henle's Loop connects the proximal tubule to the distal tubule.
VI The Bowman's capsule surrounds the glomerulus. It is composed of visceral/inner layer and simple squamous/ outer layers. The visceral layer lies just beneath the thickened glomerular basement membrane and only allows fluid and small molecules like glucose and ions like sodium to pass through into the nephron.
VII The descending limb causing a large amount of water to be reabsorbed as it is highly permeable to water but completely impermeable to ions. Thus result in increases in fluid osmolarity. In contrast, the ascending limb exert a large drop in the osmolarity of fluid by passing through the loop of Henle's loop as it is impermeable to water but highly permeable to ions.
VIII Aldosterone, and parathyroid hormone b. Antidiuretic hormone. secreted from the pituitary gland. Antidiuretic hormone function by increasing the permeability of the tubule to water to increase water reabsorption by acting on distal convulated tubule.