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Questions and Answers
What is the upper size limit for colloidal dispersions?
What is the upper size limit for colloidal dispersions?
What term is used for compounds that accumulate at the boundary between two phases?
What term is used for compounds that accumulate at the boundary between two phases?
What type of dispersions frequently exceeds the size of 1 μm?
What type of dispersions frequently exceeds the size of 1 μm?
What is the characteristic feature of surface-active compounds in their chemical structure?
What is the characteristic feature of surface-active compounds in their chemical structure?
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What enables the dispersion of insoluble particles in the form of a suspension?
What enables the dispersion of insoluble particles in the form of a suspension?
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True or false: Emulsions and suspensions are examples of colloidal dispersions?
True or false: Emulsions and suspensions are examples of colloidal dispersions?
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True or false: The upper size limit for colloidal dispersions is 1 μm?
True or false: The upper size limit for colloidal dispersions is 1 μm?
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True or false: Surface-active compounds are characterized by having only one distinct region in their chemical structure?
True or false: Surface-active compounds are characterized by having only one distinct region in their chemical structure?
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True or false: The existence of two distinct regions in a molecule is referred to as amphipathy?
True or false: The existence of two distinct regions in a molecule is referred to as amphipathy?
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True or false: Aerosols are considered coarse dispersions with droplet size typically exceeding 1 μm?
True or false: Aerosols are considered coarse dispersions with droplet size typically exceeding 1 μm?
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Which of the following is a cause of arrhythmias related to the abnormal rate of discharge in pacemaker cells?
Which of the following is a cause of arrhythmias related to the abnormal rate of discharge in pacemaker cells?
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Which ion channels are targeted by most antiarrhythmic agents to suppress automaticity?
Which ion channels are targeted by most antiarrhythmic agents to suppress automaticity?
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Why is it useful to organize arrhythmias into groups according to anatomic site of the abnormality?
Why is it useful to organize arrhythmias into groups according to anatomic site of the abnormality?
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Which heart structure normally sets the pace of contraction for the myocardium?
Which heart structure normally sets the pace of contraction for the myocardium?
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What type of drugs are predominantly used to manage chronic heart failure and arrhythmias?
What type of drugs are predominantly used to manage chronic heart failure and arrhythmias?
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Study Notes
Colloidal Dispersions
- The upper size limit for colloidal dispersions is not 1 μm, but rather 1-10 nm to 1 μm.
- Surface-active compounds, also known as surfactants, are characterized by having two distinct regions in their chemical structure: a hydrophobic (water-repelling) tail and a hydrophilic (water-attracting) head.
- Emulsions and suspensions are examples of colloidal dispersions.
- The existence of two distinct regions in a molecule is referred to as amphipathy.
- Aerosols are not considered colloidal dispersions, but rather coarse dispersions with droplet size typically exceeding 1 μm.
Arrhythmias
- Arrhythmias related to the abnormal rate of discharge in pacemaker cells can be caused by abnormal ion channel function.
- Most antiarrhythmic agents target ion channels to suppress automaticity.
- Organizing arrhythmias into groups according to anatomic site of the abnormality is useful because it helps to identify the underlying cause of the arrhythmia and guide treatment.
- The sinoatrial (SA) node, located in the right atrium, normally sets the pace of contraction for the myocardium.
- Beta blockers, along with other antiarrhythmic agents, are predominantly used to manage chronic heart failure and arrhythmias.
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Description
Test your knowledge about liquid dosage forms, specifically suspensions and emulsions. Learn about dispersed systems and the components of disperse phases.