Small Help PDF

1. What protein prevents molecular interaction between thin and thick filaments? Tropomyosin 2. At the postganglionic neuron, what neurotransmitter is released and what does it bind to? Acetylcholine binds to muscarinic receptor 3. Which is TRUE about Na+/K+ ATPase? Antiport, primary active tr...

1. What protein prevents molecular interaction between thin and thick filaments? Tropomyosin 2. At the postganglionic neuron, what neurotransmitter is released and what does it bind to? Acetylcholine binds to muscarinic receptor 3. Which is TRUE about Na+/K+ ATPase? Antiport, primary active transport 4. Expected potential of Na+ typical in mammalian neuron under physiological conditions: (+) of 0 mV 5. Aspirin inhibits COX1 and COX2: Decrease Thromboxane’s production and causes bleeding 6. TRUE about endocannabinoids: Primarily act on presynaptic receptors 7. In general terms, MAOIs and SSRIs act by: Increasing the level of neurotransmitters on the synapse 8. TRUE about Glutamate: Acts as a neurotransmitter to bind to excitatory and inhibitory receptors; glutamate causes hypersensitivity to pain 9. What is the correct sequence of events to create a peptide neurotransmitter? Polymerase transcription of DNA → ribosomal translation of mRNA → transport peptide → cleavage from precursor proteins 10. When the radius of arteriole ↑ then: ↓ pressure in capillaries by arterioles 11. Which of the following is a systolic murmur? Aortic stenosis 12. What is the disease state that ↑ pressure work of the ventricle? Aortic stenosis 13. What directly ↑ heart rate? Drug stimulates β1 receptor 14. What is a way to ↑ blood pressure, which of the following does not happen? β1 receptors on the arterioles do not happen 15. Cardiac output ↑ by: decrease of venous compliance 16. After depolarization occurs at what point of an action potential? Relative refractory period (stage 3 and 4) 17. Afterload ↑ when there is an ↑ of: An ↑ in vascular resistance 18. What causes ↑ in venous return? ↑ muscle activity in legs 19. What condition is caused by a genetic (congenital) disorder? Hypertrophic cardiomyopathy 20. Administration causes blood pressure to ↑: Drug activates β1 receptor 21. Vasodilation in arterioles in the brain: ↓ oxygen in brain tissue 22. Which of the following will increase flow to the brain? Decrease oxygen. 23. Coronary perfusion during exercise is dependent on: Local generation of nitric oxide 24. What is most likely in patients with coronary arterial atherosclerosis with 80% occlusion? Elevated ST segments with exercise 25. What is a consequence of a patient with atherosclerosis if a patient has