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

PCT NHA Exam Questions and answers, 100% Verified. Graded A 1. The lavender-topped tube contains: a. No additive b. SPS c. Na+ citrate d. EDTA - -d. EDTA 1. The additive in a gray-topped tube is: a. K+ oxalate b. Na+ citrate c. EDTA d. None of the above - -a. K+ oxalate 1. Which of the needle has the largest gauge? a. 16 g b. 20 g c. 21 g d. 25 g - -a. 16 g 1. Which of the following gauge needle is used for the typical adult venipuncture? a. 23 g b. 16 g c. 21 g d....

What is tonicity? - Answer-The ability of a solution to cause a cell to shrink or swell. Why does it matter if you are hypotonic or hypertonic? What happens during these conditions? - Answer-If the interstitial fluid has greater solute concentration than that of the cytosol, water from inside the cell flows out causing the cell to crenate and blood pressure to increase. If the interstitial fluid has less solute concentration than that of the cytosol, water flows into the cell and it undergoe...

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...

Name the 4 parts to the cardiovascular system - Correct Answer heart, blood vessels, blood, and lymphatic system is the cardiovascular system and open or closed system? - Correct Answer closed what is cardiac tissue called - Correct Answer myocardium what is the surrounding sac of the heart called? - Correct Answer Pericardium the 4 chambers of the heart is divided by the? - Correct Answer median septum What is the pulmonary system? - Correct Answer sends blood to lungs What is...

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...

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...

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 ...

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 ...

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