I need some help answering the following multiple choice questions for my pharmacology class.

Q1.) What are two muscle types that are activated via cholinergic activity at muscarinic receptors?
1 Smooth and Cardiac muscle ( I think this is the correct answer)
2 Smooth and skeletal muscle
3 Skeletal and cardiac muscle
4 Actin and Myosin myofilaments

Q2.) What condition occurs when there is insufficient blood in the coronary arteries?
1Angina pectoris.
2 Arteriosclerosis.
3 Atherosclerosis
4 Myocardial Infarction.

Q3.) A common adverse effect from quinidine overdose is:
1Hypertension
2 Tachypnea
3 Cinchonism
4 Dry mouth

Q4.) A prolongation of the QT interval can lead to all of the following except? (I think it may either be hypoglycemia or fainting)
1 Hyperglycemia
2 Hypertension
3 Fainting
4 Ventricular Arrythmias.