問題一覧
1
urine formation requires which of the following
glom filtration, tubular reabsorption and tubular secretion
2
which substance released from the adrenal cortex, acts on the nephron to increase tubular reabsorption of sodium ions and secretion of potassium and hydrogen ions
aldosterone
3
the control of blood pH by the kidneys during acidosis involves
the secretion of H+ and reabsorption of HCO3- fro the tubular fluid
4
the urinary system assists the ? in detoxifying poisons and during starvation altering amino acids to other tissues can more easily break them down
liver
5
the presence of glucose in urine
indicative of diabetes mellitus
6
each nephron contains
renal tubule
7
which of the following is not a component of the renal tubule
bowman’s capsule
8
emptying the urinary bladder is a spinal reflex regulated by
higher brain centres
9
which of the following does not control glomerular filtration rate
water reabsorption
10
? diuresis results from large quantities of unreabsorbed solutes in the renal tubules
osmotic
11
the excretory function of the renal system is performed by the
kidneys
12
the presence in the urine of osmotic diuretics such as mannitol raises urine osmolality, which causes
generally increases urine volume and fluid loss
13
each nephron empties into the ? - a series of tubes that carry tubular fluid away from the nephron
collecting system
14
which of the following indicates kidney failure
protein in urine
15
urine volume and osmotic concentration are primarily regulated by
control of water reabsorption
16
the part of the renal tubule that lies in the renal medulla is
loop of henle
17
which of the following ions I’m not absorbed from the thick ascending limb of the loop od henle
magnesium
18
reabsorption is the removal of substances from the filtrate, across the tubular epithelium and into the peritubular fluid before eventually re entering the
blood
19
about 80% of the water is reabsorbed into the blood from the
obligatory reabsorption in the proximal convoluted tubule
20
glomerular filtration rate is principally controlled by each of the following processes except
temperature regulation
21
the capillary network of the renal corpuscle is known as the
glomerulus
22
age related changes in the urinary system include which of the following
problems with the micturition reflex
23
when does urine production end
when tubular fluid enters the renal pelvis
24
sympathetic activation of the nerve fibres in the nephron causes
all of the other options
25
the ability of the kidneys to produce either hyperosmotic or hyposmotic urine depends on part on the
countercurrent multiplier mechanism of the loop of henle
26
the glomerular filtration rate is the amount of filtrate produced by the kidneys each
minute
27
Which of the parts of the loop of henle is permeable to water
descending limb
28
what is the major process that occurs in the loop of henle
water and ion reabsorption
29
which of the following processes does not occur in the distal convulated tubule
passive reabsorption of ammonia and calcium ions
30
from the renal corpuscle, filtrate enters the renal tubule, which is responsible for all of the following except
synthesising uric acid from nitrogenous waste
31
water diuresis results from excessive water ingestion and is principally due to a decrease in
antidiuretic hormone (ADH)
32
the renal corpuscle is the site where the process of ? occurs and in this process, blood pressure forces water and dissolved solutes out of the glomerular capillaries
filtration
33
what effect will aldosterone blocking agents have on urine production
block sodium reabsorption, increase urine volume
34
steps involved in urine formation include each of the following except
tubular filtration
35
which of the following is not a waste product in excretion of urine
fatty acids
36
when the osmolality of the blood increases
blood volume tends to increase in response
37
which of the following is not a principle function of the renal system
digestion
38
glomerular pressure is due to a variation in the size of the afferent and efferent arterioles. how does the afferent arteriole differ in size from the efferent arteriole
afferent arteriole has a larger diameter
39
which of the following is one of the two principal layers of the kidney
renal medulla
40
when ADH levels rise
the amount of water reabsorbed increases
41
proximal convulated tubule is the first segment of the renal tubule and absorbs all of the following from the tubular fluid except
uric acid
42
the urinary system conserves valuable nutrients by preventing their excretion in urine whilst excreting organic waste products such as
urea
43
filtration produces an essentially protein free solution, known as filtrate which is similar to
blood plasma
44
the urinary system regulates ? concentrations of sodium, potassium? chloride and other ions by controlling the quantities lost in urine
plasma
45
the kidneys have a rich renal blood supply and glomerular filtration is affected by ? pressure
renal arteriole
46
alcohol intake increases urine production by a similar mechanism to ?, namely inhibiting ADH secretion
excessive water intake
47
the basic functional unit of the kidney is the
nephron
48
which of the following are specifically involved with the elimination of urine (urination, micturition)
urinary bladder and urethra
49
all of the following are components of the urinary tract except
kidney
50
urine production begins in microscopic, tubular structure called
nephrons
51
secretion is the transport of solutes from the ? fluid, across the tubular epithelium and into the tubular fluid
peritubular
52
in filtration, blood pressure forces ? across the wall of the glomerular capillaries into the capsular space
water and solutes
53
what is the term for the chemical and physical analysis of the urine sample
urinalysis
54
regions of the nephron vary in structure and function and as filtrate moves along the tubule it gradually changes in
composition
55
the urinary system helps stabilise ? by controlling the loss of hydrogen and bicarbonate ions in urine
blood pH
56
inflammation of the kidneys causes the kidneys to swell. this resulting increase in hydrostatic pressure within the kidney
lowers glomerular filtration rate and thus urine production
57
glucose reabsorbtion occurs in the
proximal tubule
58
the urinary system regulates blood volume and blood pressure principally by adjusting the ? lost in urine
volume of water
59
in healthy individuals, urine is a fluid containing each of the following except
proteins
60
which of the following is not considered to be a normal filtrate component
large protein