Sa node pace - Study guides, Class notes & Summaries

Basic Dysrhythmias Part I & II Questions & Answers A+ 1 / 29 Pacemakers of the Heart P wave AV node conduction AV Valves QRS complex Sinoatrial (SA) node Atrioventricular (AV) node Bundle of His Bundle Branches Purkinje Fibers -SA node: p wave -SA node to AV node: PR segment -Impulse travels from Bundle of His to Bundle branches and then to Purkinje fibers: QRS complex -Repolarization of ventricles: T wave sinoatrial node (SA node) starts an im￾pulse, as the wave of depolari...

ATE 1211 Animal Physiology Final Exam - Questions and Answers (Complete Solutions) Name the cells found inside the seminiferous tubules sex cells (spermatogonia) Which cells contribute making blood? cell barrier in testes- Sertoli cells Name the hormone produced by Sertoli cells Estrogen What is spermatogenesis? the process of formation of spermatozoa in testes. How many spermatozoa are produced from each primary spermatocyte? Four What is capacitation? sperms undergo some changes in the femal...

Pacemakers of the Heart correct answer: Sinoatrial (SA) node Atrioventricular (AV) node Bundle of His Bundle Branches Purkinje Fibers -SA node: p wave -SA node to AV node: PR segment -Impulse travels from Bundle of His to Bundle branches and then to Purkinje fibers: QRS complex -Repolarization of ventricles: T wave P wave correct answer: sinoatrial node (SA node) starts an impulse, as the wave of depolarization spreads through the atria, _______ is inscribed on the ECG AV nod...

Autorythmic - Answer Self Exciteable, and repeatedly generate action potential eg. natural pace maker Cause of fundamental heart rhythm - Answer NOT by nerve impulses or hormones, rather electrical impluse SA Node - Answer Main natural pacemaker, faster conduction than autorhytmic fibres The Heart's electrical flow - Answer SA Node to AV Node - AV Node to AV Bundle - Bundle of HIS to L and R branches to Apex and Purkinje FIbres (which then cause systolic phase and ventricle con...

DEPOLARIZATION correct answers Movement of ions (Na+, Ca+, K+) across cell membrane causing inside of cell to become more positive, electrical conduction results in contraction. Na+ channels open. Positive inside, negative outside. REPOLARIZATION correct answers movement of ions across cell membrane where inside of cell is restored to its negative charge. Sodium channels close. Potassium channels open. Active transport by sodium-potassium pump DEPORIZATION correct answers ELECTRICAL CON...

We want the sinus node pacing the heart. Depolarization- _______ Repolarization- ________ and refilling correct answers Contraction; relaxing At rest there is a _____ charge inside the cell and a positive charge outside the cell Na+ is most plentiful ______ the cell and K+ is most plentiful inside the cell. When the muscle depolarizes Na rushes ___ and K rushes ___ in a wave pattern correct answers negative; outside; in; out For a cell to depolarize it must be ______ stimulate...

Relias Dysrhythmia Basic Test Answers normal sinus rhythm heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute Sinus Arrhythmia Appearance is ALMOST NORMAL: Respiratory – Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia <60 normal sinus rhythm Sinus Tachycardia >100 (100-150) normal sinus rhythm Premature Atrial Contraction (PAC) Heart Rate: Depends on underlying rhythm Regularity: Interrupts the re...

ATE 1211 Final Exam Review - Questions and Answers (Complete Solutions) The P-wave of the ECG represents what cardiac event? atrial depolarization What event is responsible for making first heart sound? Closure of the AV valves During ventricular systole, which event occurs first? AV valve closes The wave of systolic pressure which starts at the heart and spreads throughout the arterial network is called: Pulse The pace-maker of heart that initiates impulses in the atria is: SA Node What are t...

Relias Dysrhythmia Basic Test Answers normal sinus rhythm heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute Sinus Arrhythmia Appearance is ALMOST NORMAL: Respiratory – Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia <60 normal sinus rhythm Sinus Tachycardia >100 (100-150) normal sinus rhythm Premature Atrial Contraction (PAC) Heart Rate: Depends on underlying rhythm Regularity: Interrupts the re...

Sinoatrial (SA) node the pacemaker; highly specialized, neurological tissue impeded in the wall of the right atrium; responsible for initiating electrical conduction of the heartbeat, causing the atria to contract and firing conduction of impulses to the AV node A cluster of specialized myocardial cells located high in the right atrium and adjacent to the superior vena cava AV node (atrioventricular node) The AV node is located in the interatrial septum close to the tricuspid valve. ...