問題一覧
1
water accounts for up to 60% of live humans body weight. what is the largest reservoir of body water
cells
2
which of the following can be directly measured
extracellular fluid and total body water
3
movement of interstitial fluid into lymphatic vessels depends on the interstitial fluid ? pressure
hydrostatic pressure
4
which of the following is not part of the non specific immune defence
antibodies
5
the body is in ? when the amount of water gained each day is equal to the amount lost to the environment, and the digestive system is the primary route for water gains while the urinary system is the primary route for water loss
fluid balance
6
in clinical situations, is it customary to approximate that two thirds of the total body water (TBW) is in the
intracellular fluid (ICF)
7
which ion plays a major part in haemostasis (blood clotting)
Ca2+
8
why does whole blood in the intact circulatory system not clot
endogenous inhibitory mechanisms oppose blood clotting mechanisms
9
what is the role of the hypothalamus in regulating water balance
control of drinking behaviour and control of ADH release (from pituitary gland)
10
buffers are dissolved compounds that can remove
hydrogen ions
11
the movement of the fluid in the capillary bed is the result of
osmotic and hydrostatic pressure
12
clotting disorders cause
excessive tendency to bleed
13
the ? pathway - which begins when enzymes from either extrinsic or intrinsic pathways activate factor X starting a cascade ending with conversion of fibrinogen to fibrin
common
14
the principal components of intracellular fluid (ICF) include large numbers of ? proteins
negatively charged
15
? are ions released through the breakdown of inorganic compounds and are so named because they conduct an electrical current in a solution
electrolytes
16
slight changes in acid base balance can cause each of the following except
edema
17
what constitutes an effective buffer
an ion that can absorb excess H ions to prevent pH lowering and release them when pH increases
18
the blockage of lymphatic vessels can result in a rise in the volume of interstitial fluid, which can result in a massive regional
edema
19
the extracellular fluid (ECF) and the intracellular fluid (ICF) are called
fluid compartments
20
continuous movement of water through the extracellular fluid (ECF) and intracellular fluid (ICF) functions to perform all of the following except
regulate body temperature
21
the body is in acid base balance when the production of ? in the body is precisely matched by their loss
hydrogen ions
22
allergy involves excessive immune response against
innocuous substances
23
fluid balance reflects primarily the control of ? inside and outside of the cell and this is known as electrolyte balance
ionic concentration
24
stability of the volumes, solute concentrations and pH of the ECF and ICF involves each of the following inter related processes except
density balance
25
which of the following hormones is not involved in the major physiological adjustments affecting fluid balance and electrolyte balance
insulin
26
dehydration and water intoxication have the most direct effect on extracellular fluid concentration of which ion
sodium
27
the cessation of bleeding is also called
haemostasis
28
which of the following is not one of the three main acid base buffer systems
carbohydrates
29
cell membranes are ? and ions can only enter or leave by specific channels or carriers
Selectively permeable
30
minor components of the extracellular fluid (ECF) include each of the following, except
plasma
31
which one of the following does the extracellular fluid not comprise
cytosol
32
which of the following is not a function of platelets
scar formation
33
what is the consequence of platelet activation
platelets become sticky and adhere to each other and injured tissue
34
electrolyte balance primarily involves balancing the rates of absorption across the digestive tract with rates of loss at the
kidneys
35
which two major ions contribute to the osmotic concentrations of the extracellular fluid (ECF) and intracellular fluid (ICF), respectively
sodium and potassium
36
despite the differences in concentration of specific substances, the intracellular fluid (ICF) and extracellular fluid (ECF) ? concentrations in most instances are identical, as water can freely move across cell membranes
osmotic
37
which of the following is not one of the four key concepts in the regulation of fluids and electrolytes
most fluids and electrolytes are normally lost by evaporation
38
to maintain physiological function the cells of the body require a constant supply of water (compromising ? if the volume of fluid outside cells)
99%
39
the functions of blood include each of the following except
supporting and cushioning the central nervous system
40
red blood cells are formed by differentiation of embryonic stem cells (?) in the red bone marrow
erythropoiesis
41
immune can be acquired by all of the following ways except
chemical (antibiotics)
42
which of the following is part of the lymphatic systems non specific defences
inflammation
43
each day, body fluids gain electrolytes from ingested food and water, and lose electrolytes in urine, sweat and faeces; and if the gains and losses for each electrolyte are in balance, the body is said to be in
electrolyte balance
44
the extracellular (ECF) and intracellular (ICF) are in osmotic equilibrium. this implies all of the following except
the hydrostatic pressures in the ICF and ECF are the same
45
why are extracellular and intracellular fluids referred to as fluid compartments
they are in communication but can maintain different internal compositions
46
? are substances that combine with hydrogen ions (pH>7)
bases
47
water that filters from the capillaries into the interstitial fluid
re enters the bloodstream directly or via the lymphatic system
48
which of the following white blood cell types is responsible for the body’s specific defences
lymphocytes
49
lymphatic vessels carry lymph from peripheral tissues through the lymph nodes to the
venous system
50
which of the following is not a major mechanism to maintain hydrogen ion homeostasis
chloride consumption
51
which is the best definition of osmotic pressure
the force driving water across a semipermeable membrane to eliminate a concentration gradient
52
innate immunity is
inherited
53
all of the following are part of the first line of defence against invaders except
neutrophils
54
the principal ions in the extracellular fluid (ECF) are all of the following except
potassium
55
the three phases of haemostasis include each of the following except
scar phase
56
which physiological factor initiates haemostasis?
factor released from injured tissue
57
the ionic concentrations and ? of body fluids are as important as their absolute quantity
pH
58
formed elements of blood include each of the following except
plasma
59
which of the following is not an organ of the lymphatic system
kidney
60
preventing a reduction of pH is complicated as the body generates a variety of ? during normal metabolism
acids