Physio doubt
Started by buffer
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Someone please help with these questions I have my exam in 9 days
Each of the following lipid classes is incorporated into membranes EXCEPT one. Which one is the EXCEPTION?
Which of the following is LEAST descriptive of lipids?
The largest amount of body water can be found in which of the following?
Intracellular and interstitial body fluids have similar
The spinal cord is the only structure in the central nervous system necessary for which of the following body functions?
Decreased response of sense organs when exposed to a constant stimulus is called
An action potential in a nerve fiber is considered to be related to
If an axonal membrane transiently becomes very permeable to Na+ ions, then the membrane potential of the cell wall will approach
When are nerve fibers hypoexcitable?
The maximal frequency of impulses that can be carried by a nerve fiber is limited by which of the following?
GABA increases the permeability of postsynaptic membranes to which of the following ions?
Which of the following represents a striated muscle that contains transverse tubules, a slow rate of calcium sequestration, and is inhibited by acetylcholine?
Calcium ions initial contraction in skeletal muscle when they
During exercise, muscle tissue accumulates lactic acid. As a result, erythrocytes passing through capillaries in the muscle
The absolute refractory period of skeletal muscle is an interval during which
Which of the following portions of the cardiovascular system contains the greatest volume of blood?
Edema may be caused by
Which of the following changes promotes the formation of extracellular edema?
Which of the following could be beneficial in reducing edema in the arms of women who have had radical mastectomy with removal of axial lymph nodes?
Which of the following is MOST often associated with free fatty acid transport in human blood?
The main function of plasma globulins is to
In the absence of compensatory changes, a drop in blood pressure results from
Distended veins in the neck result from which of the following?
Cardiac output is expressed as a product of
In which of the following conditions might the systolic blood pressure be abnormally high?
Sounds heard during systole in the antecubital space are produced by
1. Closure of AV valves
2. Closure of the aortic valve.
3. Turbulent blood flow through the artery
4. Laminar blood flow through the occluded artery.
Each of the following lipid classes is incorporated into membranes EXCEPT one. Which one is the EXCEPTION?
- Cholesterol
- Ganglioside
- Triglyceride
- Sphingomyelin
- Phosphatidylcholine
Which of the following is LEAST descriptive of lipids?
- Nonpolar
- Carbon-containing
- Hydrophobic
- Hydrophilic
The largest amount of body water can be found in which of the following?
- Urine
- Blood plasma
- Intracellular fluid
- Interstitial fluid
- Stomach and intestines
Intracellular and interstitial body fluids have similar
- Total osmotic pressure
- Colloid osmotic pressures
- Sodium ion concentrations
- Chloride ion concentrations
- Potassium ion concentrations.
The spinal cord is the only structure in the central nervous system necessary for which of the following body functions?
- Respiration
- Simple reflex
- Temperature regulation
- Coordinated muscle movement
Decreased response of sense organs when exposed to a constant stimulus is called
- Occlusion
- Summation
- Adaption
- Facilitation
- Sensory deprivation
An action potential in a nerve fiber is considered to be related to
- The changed orientation of molecules in the membrane giving rise to a static potential difference.
- The entry of sodium ions followed by te exit of potassium ions.
- A breakdown of metabolic products resulting in different concentrations of potassium across the membrane
- The flow of electrons across the membrane following change in membrane permeability
If an axonal membrane transiently becomes very permeable to Na+ ions, then the membrane potential of the cell wall will approach
- -70 mV
- -60 mV
- -50 mV
- 0 mV
- +60 mV
When are nerve fibers hypoexcitable?
- During resting potential
- At the firing level
- During local depolarization
- During negative after-potential
- During positive after-potential
The maximal frequency of impulses that can be carried by a nerve fiber is limited by which of the following?
- Intensity of the stimulus
- Diameter of the nerve fiber
- Duration of the absolute refractory period
- Duration of the relative refractory period.
GABA increases the permeability of postsynaptic membranes to which of the following ions?
- Bone
- Skin
- Heart muscle
- Nervous tissue
- Connective tissue
Which of the following represents a striated muscle that contains transverse tubules, a slow rate of calcium sequestration, and is inhibited by acetylcholine?
- Cardiac
- Skeletal
- Multi-unit smooth
- Single-unit smooth
Calcium ions initial contraction in skeletal muscle when they
- Bind to T tubules
- Bind to troponin
- Interact with actin
- Interact with myosin
- Bind to sarcoplasmic reticulum
During exercise, muscle tissue accumulates lactic acid. As a result, erythrocytes passing through capillaries in the muscle
- Rlease more CO2
- Abosorb more CO2
- Release more O2
- Both 1 and 3 above
- Both 2 and 3 above
The absolute refractory period of skeletal muscle is an interval during which
- The stimulus is more than normally effective
- The threshold is lowered
- The muscle is relaxed.
- No stimulus is effective.
Which of the following portions of the cardiovascular system contains the greatest volume of blood?
- Arterioles
- Capillaries
- Systemic veins
- Chambers of the heart
- Pulmonary vasculature
Edema may be caused by
- Constriction of arterioles
- Increased permeability of capillaries.
- Reduced blood pressure in the capillaries
- A tissue oncotic pressure that is lower than that of plasma.
Which of the following changes promotes the formation of extracellular edema?
- Increase in tissue fluid hydrostatic pressure
- Increase in plasma protein concentration
- Decrease in capillary hydrostatic pressure
- Capillary filtration exceeds capillary absorption
- Capillary absorption exceeds capillary filtration.
Which of the following could be beneficial in reducing edema in the arms of women who have had radical mastectomy with removal of axial lymph nodes?
- Hypertensive agents
- Avoidance of all diuretic agents
- Increase interstitial oncotic pressure
- Decrease interstitial hydrostatic pressure
- Administration of a plasma volume expander
Which of the following is MOST often associated with free fatty acid transport in human blood?
- Albumin
- Globulin
- Cholesterol
- Sphingolipid
- Mucopolysaccharide
The main function of plasma globulins is to
- Maintain colloid osmotic pressure
- Provide the body with both natural and acquired immunity
- Act as a framework on which clot formation may occur
- None of the above.
In the absence of compensatory changes, a drop in blood pressure results from
- Vasoconstriction
- Increased hematocrit
- Increased stroke volume
- Increased cardiac output
- Decreased venous return
- Aortic arch and carotid sinus
- Walls of the great veins
- Aortic and carotid bodies
- Respiratory center
Distended veins in the neck result from which of the following?
- Pulmonary edema
- Hemolytic anemia
- Systemic hypotension
- Congestive heart failure.
Cardiac output is expressed as a product of
- Stroke volume and heart rate
- Venous pressure and heart rate
- Stroke volume and respiratory rate
- Stroke volume and diastolic filling
- Venous pressure and coronary blood flow.
In which of the following conditions might the systolic blood pressure be abnormally high?
- Cardiac shock
- Heart failure
- Anaphylactic shock
- Decreased arterial blood compliance
- Ventricular fibrillation.
Sounds heard during systole in the antecubital space are produced by
1. Closure of AV valves
2. Closure of the aortic valve.
3. Turbulent blood flow through the artery
4. Laminar blood flow through the occluded artery.
Each of the following lipid classes is incorporated into membranes EXCEPT one. Which one is the EXCEPTION?
Cholesterol
Ganglioside
Triglyceride - answer
Sphingomyelin
Phosphatidylcholine
Which of the following is LEAST descriptive of lipids?
Nonpolar
Carbon-containing
Hydrophobic
Hydrophilic - answer
The largest amount of body water can be found in which of the following?
Urine
Blood plasma
Intracellular fluid - answer (about 2/3rds the TBW )
Interstitial fluid
Stomach and intestines
The spinal cord is the only structure in the central nervous system necessary for which of the following body functions?
Respiration
Simple reflex - answer
Temperature regulation
Coordinated muscle movement
An action potential in a nerve fiber is considered to be related to
The changed orientation of molecules in the membrane giving rise to a static potential difference.
The entry of sodium ions followed by te exit of potassium ions. (answer)
A breakdown of metabolic products resulting in different concentrations of potassium across the membrane
The flow of electrons across the membrane following change in membrane permeability
When are nerve fibers hypoexcitable?
During resting potential
At the firing level
During local depolarization
During negative after-potential
During positive after-potential - answer
During exercise, muscle tissue accumulates lactic acid. As a result, erythrocytes passing through capillaries in the muscle
Rlease more CO2
Abosorb more CO2
Release more O2
Both 1 and 3 above
Both 2 and 3 above - answer
GABA increases the permeability of postsynaptic membranes to which of the following ions?
Bone
Skin
Heart muscle
Nervous tissue - answer
Connective tissue
The absolute refractory period of skeletal muscle is an interval during which
The stimulus is more than normally effective
The threshold is lowered
The muscle is relaxed.
No stimulus is effective. - answer
Which of the following portions of the cardiovascular system contains the greatest volume of blood?
Arterioles
Capillaries
Systemic veins - answer
Chambers of the heart
Pulmonary vasculature
Edema may be caused by
Constriction of arterioles
Increased permeability of capillaries. - answer
Reduced blood pressure in the capillaries
A tissue oncotic pressure that is lower than that of plasma.
Which of the following changes promotes the formation of extracellular edema?
Increase in tissue fluid hydrostatic pressure
Increase in plasma protein concentration
Decrease in capillary hydrostatic pressure
Capillary filtration exceeds capillary absorption - answer
Capillary absorption exceeds capillary filtration.
In the absence of compensatory changes, a drop in blood pressure results from
Vasoconstriction
Increased hematocrit
Increased stroke volume
Increased cardiac output
Decreased venous return - answer
Sounds heard during systole in the antecubital space are produced by
1. Closure of AV valves
2. Closure of the aortic valve.
3. Turbulent blood flow through the artery - answer
4. Laminar blood flow through the occluded artery.
pls correct me if any ans is wrong.
Cholesterol
Ganglioside
Triglyceride - answer
Sphingomyelin
Phosphatidylcholine
Which of the following is LEAST descriptive of lipids?
Nonpolar
Carbon-containing
Hydrophobic
Hydrophilic - answer
The largest amount of body water can be found in which of the following?
Urine
Blood plasma
Intracellular fluid - answer (about 2/3rds the TBW )
Interstitial fluid
Stomach and intestines
The spinal cord is the only structure in the central nervous system necessary for which of the following body functions?
Respiration
Simple reflex - answer
Temperature regulation
Coordinated muscle movement
An action potential in a nerve fiber is considered to be related to
The changed orientation of molecules in the membrane giving rise to a static potential difference.
The entry of sodium ions followed by te exit of potassium ions. (answer)
A breakdown of metabolic products resulting in different concentrations of potassium across the membrane
The flow of electrons across the membrane following change in membrane permeability
When are nerve fibers hypoexcitable?
During resting potential
At the firing level
During local depolarization
During negative after-potential
During positive after-potential - answer
During exercise, muscle tissue accumulates lactic acid. As a result, erythrocytes passing through capillaries in the muscle
Rlease more CO2
Abosorb more CO2
Release more O2
Both 1 and 3 above
Both 2 and 3 above - answer
GABA increases the permeability of postsynaptic membranes to which of the following ions?
Bone
Skin
Heart muscle
Nervous tissue - answer
Connective tissue
The absolute refractory period of skeletal muscle is an interval during which
The stimulus is more than normally effective
The threshold is lowered
The muscle is relaxed.
No stimulus is effective. - answer
Which of the following portions of the cardiovascular system contains the greatest volume of blood?
Arterioles
Capillaries
Systemic veins - answer
Chambers of the heart
Pulmonary vasculature
Edema may be caused by
Constriction of arterioles
Increased permeability of capillaries. - answer
Reduced blood pressure in the capillaries
A tissue oncotic pressure that is lower than that of plasma.
Which of the following changes promotes the formation of extracellular edema?
Increase in tissue fluid hydrostatic pressure
Increase in plasma protein concentration
Decrease in capillary hydrostatic pressure
Capillary filtration exceeds capillary absorption - answer
Capillary absorption exceeds capillary filtration.
In the absence of compensatory changes, a drop in blood pressure results from
Vasoconstriction
Increased hematocrit
Increased stroke volume
Increased cardiac output
Decreased venous return - answer
Sounds heard during systole in the antecubital space are produced by
1. Closure of AV valves
2. Closure of the aortic valve.
3. Turbulent blood flow through the artery - answer
4. Laminar blood flow through the occluded artery.
pls correct me if any ans is wrong.
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