Chapter 1, Problem B1CRE

Topic: What does EMG activity look like and how does this change with increasing intensity of muscle contraction? What does the relationship between the biceps RMS EMG amplitude and contraction intensity suggest? If contraction of one skeletal muscle fibre produces electrical activity (i.e. EMG activity), what does the above relation imply? There are several factors that influence tension produced by a whole skeletal muscle. Which 2 factors are preliminary influencing the relationship between the Biceps RMS EMGamplitude and contraction intensity in the current task? Topic 2: How do muscle work together to perform coordinated movements? Describe the EMG activity in the triceps muscle during elbow flexion and what this activity represents. What might the purpose of this be? Topic 3: What is a stretch reflex? Stimulus that will evoke the reflex is a light tap on the patellar ligament. How will the light tap affect the length of the rectus femoris muscle? What effect would the…

Does the first heart sound (lubb) occur before or after the QRS complex and explain why this is the case? (I need descriptions of considering the both possibilities). Your answer should include a description about what the QRS complex represents, whether the relevant heart chamber is contracting or relaxing, the specific valves involved, and how the pressure within the relevant heart chamber determines whether these valves are open or closed. Does the second heart sound (dupp) occur before or after the T wave and explain why this is the case? (I need descriptions of considering both of the possibilities). Your answer should include a description about what the T wave represents, whether the relevant heart chamber is contracting or relaxing, the specific valves involved, and how the pressure within the relevant chamber and vessels determines whether these valves are open or closed. Before the real exam begins, I would really appreciate seeing how these questions could be answered in…

what makes the first (lubb) and second (dupp) heart sounds? what does the time interva between the start of the P wave and start of the QRS complex represent in terms of the AV node? Describe the flow of oxygenated blood from the first heart sound (lubb) to the finger. Your answer should include the name of the relevant heart chamber, the direction of blood flow through the relevant valve, the name of the elastic artery that the oxygenated blood is ejected into, and the type of blood vessel that ransports the oxygenated blood to the fingers. Why is there a delay between the first heart sound (lubb) and onset of the rising phase of the pulse pressure? State the normal resting mean arterial pressure (include units of measure) and name one lifestyle factor that could account for variation in resting mean arterial pressure between individuals? Before the real exam begins, I would really appreciate seeing how these questions could be answered in a detailed and well-structured way. I'm…

Is there are any gaps in how healthcare aides (HCAs) are integrated into team discussions or care planning? From my experience, it seems HCAs are sometimes left out of broader care conversations, even though they have valuable insight from their close interactions with patients. What strategies do you think could help ensure their perspectives are more consistently included?

In a tabular form, outline in detail ten (10) common diagnostic and laboratory investigations in medical-surgical diseases, highlighting their definition, procedure/techniques, purpose(s) and complication(s) (where applicable).

I cannot understand why the ephedrine HCl is considered as a conjugated weak acid of the weak base ephedrine. I think I am missing out some concepts. I know the ibuprofen is a weak acid and ibuprofen sodium is a weak base I just memorised it cuz I cannot understand why. I only know sodium salt of wa acts a s wb. Sodium salt of wb acts as a weak acid

I am struggling with understand ing some concepts of pharmacology esp. how oxymetazoline use for nasal congestion, prazosin use for prostatic huperplasia and side effects. In addition I found I am struggling with explaining how to minimise the side effects of the inhaled corticosteroids.

1. Outline some potential causes of epilepsy (3 marks) 2. Explain the mechanism of action of the antiepileptic drug carbamazepine and mention one thing that patients should be aware of when taking it (4 marks) 3. What are neural tube defects and how do they relate to antiepileptic drugs? (3 marks) 4. What class does sertraline belong to and what is it’s mechanism of action? 5. Explain what “serotonin syndrome” is and how it is thought to occur at a pharmacological level? In your answer include at least TWO symptoms of this condition. (4 marks) 6. Lithium toxicity can result from high concentrations of lithium in the blood. What are the signs of lithium toxicity and what are TWO classes of drugs that might interact with lithium? (3 marks) 7. The following questions relate to antipsychotics a)Antagonist activity at which receptor is most likely to be responsible for causing drowsiness? (1 mark) b)Antipsychotics might also cause hyperprolactinemia. Antagonist activity at which…

Help me solve this problem using dimensional analysis. The doctor writes an order to infuse a solution. The order reads : “Infuse 500 mL bag at 20 gtt/min.” The drip factor is 10gtt/mL. You start the IV infusion at 0500. At what time will the infusion be complete? Please be detailed. I typically write the order, the time I started at and what I need to find which is my time completed.