What is a pacemaker cell - Study guides, Class notes & Summaries

Rush - Advanced Pharmacology - NSG 531 - Exam 3 Questions with Complete Solutions what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - Correct Answer nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean that the refractory per...

Index of Tables xiii Preface xvii Contributors xix CHAPTER 1 HOW TO PREPARE FOR NCLEX-PN® • 1 Questions You Might Have about the Examination 2 What Is the National Council of State Boards of Nursing? 2 What Is the Current Test Plan? 2 How Do I Apply to Take the Examination? 3 What Types of Questions Are on the Examination? 4 Do I Have to Know a Lot About Computers to Take the Examination? 4 How Is the Examination Scored? 4 Can I Take a Break? 4 When Will I Know If I Passed? 4 Tips...

NCLEX-PN NGN Exam Test Bank 1. The nurse is caring for a client scheduled for removal of a pituitary tumor using the transsphenoidal approach. The nurse should be particularly alert for: A. Nasal congestion B. Abdominal tenderness C. Muscle tetany D. Oliguria Answer A: Removal of the pituitary gland is usually done by a transsphenoidal approach, through the nose. Nasal congestion further interferes with the airway. Answers B, C, and D are not correct because they are not directl...

USMLE(correct answers 100% )already passed!what cell takes up bacteria from the ileum and present antigen to immune cells M cell on peyer patch that will then secrete IgA what is the histology of hashimoto tyroiditis follicular destruction and germinal center formation what fungi is seen with mucicarmine staining cryptococcus neoformans what is the defect in osteogenesis imperfecta type 1 collage osteoid production by osteoblast what findings will you see in oste...

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 ...

ATI RN ADULT MEDICAL SURGICAL TEST BANK 1. A nurse is assessing a client who has a diagnosis on colon cancer which of the following should the nurse expect? a. Steatorrhea b. Elevated hemoglobin c. Hematochezia d. Weight gain 2. A nurse is assessing a client admitted with peripheral vascular disease. Which of the following findings indicates a venous vascular disorder? a. An ulcer at the tip of a toe b. Hair loss distal to the client’s calves c. Leg pain at rest d. Edema of the an...

Comprehensive CRNA Interview Review Accurate responses are given. Comprehensive CRNA Interview Review Norepinephrine Mechanism of Action (MOA) A1, A2, B1 agonist. Primary agent used in distributive shock because it's ability to recruit venous volume and augment preload, while increasing arterial tone, and increasing cardiac output. Alpha one causing peripheral smooth muscle contraction. (low dose venous, high dose venous and arterial). Alpha 2 adrenoreceptor agonism actually ant...

What does it mean when the heart is electrically polarized at rest? - Accurate AnswersThe inside of the heart cell has a higher potassium concentration, whereas the outside has a higher concentration of sodium. • The higher positive charge outside the cell causes a relatively more negative charge inside the cell. • The difference between the charges outside and inside of the cell wall is known as its electrical potential. What occurs during depolarization within the heart cell? - Accura...

Pacemaker o :# SA Node Backup to SA node Impulse pauses to prevent simultaneous contraction of the atria and ventricles o :# AV Node Why is the SA node the primary pacemaker? o :# The SA node has the highest intrinsic rate of any cardiac tissue Intrinsic rate of SA node o :# 60-70 per minute Intrinsic rate of AV node o :# 50 per minute Intrinsic rate of myocardium o :# 30 per minute The wave of contraction or depolarization moves from the endocardium to the 2024/2025 2 | P a g e ...

When erythrocytes are destroyed, which of the following events occurs? The globin portion of the molecule is broken down into amino acids. Type AB blood has both A and B antigens on the red cells In the platelet release reaction, ADP and thromboxanes stimulate other platelets to become activated. The hematocrit is d. the percentage of RBCs in a given volume of blood. What vitamin is necessary to produce many clotting factors in the liver? Vitamin K A white blood cell engulfing a bacterium...