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