Podcast Beta
Questions and Answers
What is the upper size limit for colloidal dispersions?
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 is the characteristic feature of surface-active compounds in their chemical structure?
Signup and view all the answers
What enables the dispersion of insoluble particles in the form of a suspension?
Signup and view all the answers
True or false: Emulsions and suspensions are examples of colloidal dispersions?
Signup and view all the answers
True or false: The upper size limit for colloidal dispersions is 1 μm?
Signup and view all the answers
True or false: Surface-active compounds are characterized by having only one distinct region in their chemical structure?
Signup and view all the answers
True or false: The existence of two distinct regions in a molecule is referred to as amphipathy?
Signup and view all the answers
True or false: Aerosols are considered coarse dispersions with droplet size typically exceeding 1 μm?
Signup and view all the answers
Which of the following is a cause of arrhythmias related to the abnormal rate of discharge in pacemaker cells?
Signup and view all the answers
Which ion channels are targeted by most antiarrhythmic agents to suppress automaticity?
Signup and view all the answers
Why is it useful to organize arrhythmias into groups according to anatomic site of the abnormality?
Signup and view all the answers
Which heart structure normally sets the pace of contraction for the myocardium?
Signup and view all the answers
What type of drugs are predominantly used to manage chronic heart failure and arrhythmias?
Signup and view all the answers
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge about liquid dosage forms, specifically suspensions and emulsions. Learn about dispersed systems and the components of disperse phases.
