The mechanism of action of atropine is as follows: (1)1.    …

The mechanism of action of atropine is as follows: (1)1.      Inhibits the actions of the sympathetic nervous system, resulting in a reduced pulse2.      It inhibits the vagus nerve action on the heart and improves the cardiac conduction system to increase the heart rate3.      Inhibits the conversion of angiotensin I to angiotensin II 4.      It binds to the angiotensin II receptor to inhibit angiotensin II action5.      It binds to the androgen receptor and so inhibits aldosterone action

Answer the following: (i) What are the names of the two atri…

Answer the following: (i) What are the names of the two atrioventricular valves of the heart and what are their functions? (ii) Describe the events that occur in the heart during the early phase of ventricular systole (Isovolumic Contraction). (iii) What is EDV? (iv) During Isovolumic Contraction is blood volume in the ventricles greater, equal to, or less than EDV on average. Explain your answer.  

A 24 years old male patient is on isoniazid, rifampicin, pyr…

A 24 years old male patient is on isoniazid, rifampicin, pyrazinamide and ethambutol for his tuberculosis (TB) treatment. One month after treatment initiation, he started complaining of difficulty reading the newspaper. The following drug is causing decline in his vision: (1)1.      Rifampicin2.       Isoniazid3.      Ethambutol4.       Rifabutin5.      Pyrazinamide

Propranolol is contraindicated in: (1)1.             Hypertr…

Propranolol is contraindicated in: (1)1.             Hypertrophic cardiomyopathy 2.             Cardiac arrhythmias3.             Symptomatic management of anxiety states4.             Asthma5.             Angina pectoris

A 37 years old man presents with diarrhoea and gastrointesti…

A 37 years old man presents with diarrhoea and gastrointestinal bleeding. Eggs of Schistosoma mansomi are found in the stool specimen. The most appropriate treatment for this patient is: (1)1.       Praziquantel2.       Fentanyl3.       Ivermectin4.       Paracetamol5.       Hydrochlorothiazide