Purkinje fibers - Study guides, Class notes & Summaries

Bio 253 Quiz 4 Graded A+ aortic valve heart valve between the left ventricle and the aorta mitral valve located between the left atrium and left ventricle; aka bicuspid valve pulmonary valve between right ventricle and pulmonary artery tricuspid valve valve between the right atrium and the right ventricle SA node pacemaker of the heart cardiac conduction system a system of specialized muscle tissues that conducts electrical impulses that stimulate the heart to beat. SA node -> A...

All of the following major vessels contribute to blood flowing into the cranial vena cava except for the: (a) Brachiocephalic vein (b) Thoracic duct (c) Azygos vein (d) Femoral vein - ️️(d) Femoral vein Smooth muscles can be found in the: (a) Heart (b) Stomach (c) Pelvic limb (d) Diaphragm - ️️(b) Stomach In what order does the impulse for depolarization travel through the heart? (a) AV node, SA node, bundle of His, Purkinje fibers (b) SA node, AV node, bundle of His, Purkin...

Exam 1: BIOS255 / BIOS 255 (Latest Update 2024 / 2025) Anatomy & Physiology III with Lab | Test Review Study Guide | 100% Correct | Grade A - Chamberlain Question: cardiac pacemaker cells Answer: SA nodes Question: SA node Answer: Sodium, potassium and calcium Question: Slow influx of Na+ Answer: Results of this depolarization Question: Electrical conduction system Answer: SA node, AV node, Bundle of His, Purkinje fibers Question: P wave Answer:...

Which of the following is NOT a component of effective perfusion? A. Adequate blood volume B. Efficient heart pumping action C. Patent and responsive blood vessels D. High blood glucose levels D. High blood glucose levels (Adequate blood volume ensures that there is enough blood to be circulated throughout the body. Efficient heart pumping action is necessary for moving blood through the circulatory system. Patent and responsive blood vessels are needed to allow blood to flow freely to t...

Excitability correct answers the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization correct answers occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity correct answers the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex:...

UCLA Phlebotomy Exam 4 | Questions and Verified Answers| 100% Correct| A Grade (2024/ 2025) Left AV valve function closes when the left ventricle contracts and prevents blood from flowing back into left atrium QUESTION Pulmonary semilunar valve Answer: between right ventricle and pulmonary artery -at the entrance of pulmonary artery QUESTION right semilunar valve function Answer: closes when the right ventricle relaxes and prevents blood from flowing back t...

VTNE PREP COMBINED, AAVSB Practice Tests Questions & Answers (A+) (c) Systolic blood pressure Answer-The pressure in the systemic arteries during ventricular contraction is: (a) Diastolic blood pressure (b) Osmotic pressure (c) Systolic blood pressure (d) Low pressure (b) SA node, AV node, bundle of His, Purkinje fibers Answer-In what order does the impulse for depolarization travel through the heart? (a) AV node, SA node, bundle of His, Purkinje fibers (b) SA node, AV node, bundle...

Excitability - Answer- the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization - Answer- occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity - Answer- the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex: the wave of depol...

CCT - Practice Test Questions with Verified Solutions 1. Which heart chamber functions to pump deoxygenated blood to the lungs? a. Right atrium b. Right ventricle c. Left atrium d. Left ventricle 1. B: The right ventricle pumps the deoxygenated blood it has received from the right atrium to the lungs. The right atrium pumps deoxygenated blood from the body to the right ventricle. The left atrium pumps oxygenated blood from the lungs to the left ventricle. The left ventricle pumps ...

GMS 6474 Final Exam Solved Questions With Revised Correct Detailed Answers 1. What is the rate of the SA node (normal pacemaker) - ANSWER bpm (fastest) 2. What is the rate of the AV node - ANSWER 40-60 bpm 3. What is the rate of the Purkinje system - ANSWER 20-40 bpm 60-100 4. Which heart segments have the highest conduction velocity - ANSWER contractile myocardial cells 5. Which heart segments have the slowest conduction velocity - ANSWER and AV nodes ...