What does the av node do - Study guides, Class notes & Summaries

Test Bank For Applied Pathophysiology for the Advanced Practice Nurse, 1st Edition Lucie Dlugasch, Lachel Story. Which of the following coenzymes is(are) necessary for normal red blood cell nuclear maturation and DNA synthesis pathway? A) Vitamin D B) Folate C) Calcium D) Vitamin B12 (cobalamin) E) Both folate and vitamin B12 (cobalamin) Ans: E Complexity: Easy Ahead: Hematopoietic System Subject: Chapter 3 Title: Hematopoietic Function 2. von Willebrand factor is directly involved ...

BKAT ICU Post Test Exam 2023 With 100% Correct Answers. Nitroprusside purpose - correct answer decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - correct answer contractility Dopamine at a low-end dose "renal dose" - correct answer 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - correct answer 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - correct answer greate...

What are the 6 parts of the cardiac conduction cycle? correct answer: -SA node -Internodal pathways -AV node -Bundle of His -R and L bundle branches -Purkinje fibers What is the SA node? correct answer: -Small cluster of cells located in the upper R atrium *-Pacemaker of the heart* What are internodal pathways? correct answer: Impulses sent by the SA node that travel through the atrial muscle fibers via the intra-atrial pathways Allows for simultaneous depolarization and contra...

NU 606 Exam 3 Questions with Verified Answers- Regis. What are the two layers of the pericardial sac ️ outer fibrous pericardium anchors the heart to diaphragm visceral pericardium (epicardium) has a serous membrane what is unique about cardiac muscle (myocardial fibers) ️ - no nerves are present intercalated discs at the junctions between fibers (they contain desmosomes, connections to prevent muscle cells from separating during contraction, and gap junctions, which permit ions to ...

Portage Learning Anatomy & Physiology 2: Module 4 Exam 100% Pass Which body system supplies cells with oxygen and nutrients and carries away waste? A. Nervous system B. Respiratory system C. Urinary System D. Correct! Circulatory System The heart is contained in the _______ cavity. A. Correct! Pericardial B. Pleural C. Septal D. Rectoperineal Which layer of heart anchors it to the diaphragm? A. Endocardium B. Mediastinal C. Myocardium D. Correct! Pericardium What is the purpose of t...

Where and why are lumbar punctures performed? - Answer- Spinal Block -> Anesthetic (into epidural space) Spinal Tap -> CSF extraction (into subarachnoid space)W B/W L3/L4 or L4/L5 NB: Posterior to this is *cauda equina* Where does a *herniated intervertebral* disk occur? What causes it? - Answer- Occurs b/w L4/L5 or *L5/S1* and C5/C6 or C6/C7 NB: affects lower spinal nerve # Degeneration of annulus fibrosis followed by *sudden compression* of nucleus pulposus What is the dif...

Nitroprusside purpose - Answer- decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - Answer- contractility Dopamine at a low-end dose "renal dose" - Answer- 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - Answer- 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - Answer- greater than 10mcg/kg/min vasoconstriction and increases BP Dopamine and Levophed inf...

Where do coronary arteries start? Ans: Arise directly from aorta near aortic valve What does RCA supply? Ans: R atrium Most of R ventricle Inferior wall of left ventricle AV node Bundle of His Supplies SA node 60% of the time What does LCA supply? Ans: Most of left ventricle Two divisions: Left Anterior descending - Left ventricle Interventricular septum Inferior apex (in most people) Circumflex - Lateral and inferior walls of left ventricle Portions of left atrium Supplies SA...

NSG223/ NSG 223 Exam 1: (Latest 2024/ 2025 Update) Med Surg II Review| Questions and Verified Answers| 100% Correct| Grade A – Herzing Q: sinus rhythm - considered to be a normal heart rhythm - rate 60-100 bpm - regular rhythm - consistent P wave - P wave prior to every QRS complex - PR interval 0.12 - 0.20 seconds (***SATA question***) Q: sinus bradycardia characteristics Answer: - rate <60 bpm - regular rhythm - consistent P wave - P wave prior to every QRS complex...

Clinical Guidelines in Primary Care 4th Edition Testbank Hollier Test Bank/StudyGuide AII CHAPTERS IN THIS TEST BANK Chapter 1 Cardiovascular Disorders MULTIPLE CHOICE 1.The nurse is aware that the muscle layer of the heart, which is responsible for the hearts contraction, is the: a. endocardium. b. pericardium. c. mediastinum. d. myocardium. ANS: D The myocardium is the specialized muscle layer that allows the heart to contract. 2.The nurse clarif...