Notes in ☕️ Coffee ✪ ZM

To Subscribe, use this Key

☕️ Coffee - ☕️ QUIZ 05: THE ANATOMY OF THE HEART, CARDIAC SKELETON AND CONDUCTION SYSTEM; CARDIAC ELECTROPHYSIOLOGY AND THE ELECTROCARDIOGRAM [page 63] - ☕️ QUIZ 05: THE ANATOMY OF THE HEART, CARDIAC SKELETON AND CONDUCTION SYSTEM; CARDIAC ELECTROPHYSIOLOGY AND THE ELECTROCARDIOGRAM [page 226] - ☕️ QUIZ 05: THE ANATOMY OF THE HEART, CARDIAC SKELETON AND CONDUCTION SYSTEM; CARDIAC ELECTROPHYSIOLOGY AND THE ELECTROCARDIOGRAM [page 355] - ☕️ Module 6 SGD 1: The Anatomy of the Heart, Cardiac Skeleton, and Conduction System [page 492] - ☕️ Module 6 SGD 2: Cardiac Electrophysiology and the Electrocardiogram [page 493]

Status	Last Update	Fields
Published	01/14/2024	Which of the following is true of the ordinary myocardial cells?A. Atrial myocardial cells are larger and are spirally arranged B. Cell junc…
Published	01/14/2024	Which of the following is true of the Purkinje fibers? A. Peripheral nuclei B. SER-rich cytoplasm C. Diminished amount of fibrils  …
Published	01/14/2024	Adipose tissue is seen in this part of the heartA. Visceral pericardium B. Endocardium C. Myocardium D. Parietal pericardium
Published	01/14/2024	In which of the following parts of the heart are the muscle fibers of the largest size seen? A. Nodes B. Valves C. Atria  D. Ventricle…
Published	01/14/2024	Which of the following tissues is common to the endocardium and myocardium? A. Dense connective B. Cardiac muscle C. Adipose D. Simple …
Published	01/14/2024	Connective tissue type surrounding the valves and extending to the cusps A. Dense elastic B. Areolar C. Dense irregular  D. Dense …
Published	01/14/2024	Which of the following is true of the SAN? A. Has small cardiac cells with few myofibrils and intercalated discs  B. Contains spirally …
Published	01/14/2024	According to Boron and Guyton these currents lead to the plateau phase of the FRAP A. Ca++ influx and Na+ influx B. Na+ influx and K+ efflux C…
Published	01/14/2024	According to Boron the pacemaker potential is due to the interaction of the “funny current” and these currents A. Ca++ current via L type channels…
Published	01/14/2024	This measures A-V conduction time A. PR interval  B. QRS interval C. QT interval D. RR interval
Published	01/14/2024	If the initial QRS vector is at (+)30 degrees, a Q wave will be seen in this lead A. Lead I B. Lead II C. Lead aVR  D. Lead aVF
Published	01/14/2024	The ventricular muscle fiber is absolute refractory to stimulation from the onset of upstroke to the A. onset of phase 2 B. end of phase 2 C. …
Published	01/14/2024	When the SA node is sick, this structure will most likely become the pacemaker? A. AV node  B. Bundle of His C. Bundle branches D…
Published	01/14/2024	Ezra counted 2.5 small squares from the onset of the Q wave to the end of the S wave. She then concluded that the duration of the QRS complex is __…
Published	01/14/2024	If the mean P vector is at (-)150 degrees, the P wave would be upright in A. Lead aVR B. Lead aVL C. Lead I D. Lead III
Published	01/14/2024	If the mean T vector is at (+)90 degrees, the T wave is tallest n this lead A. Lead aVFB. Lead aVL C. Lead II D. Lead III
Published	01/14/2024	When the right ventricle is enlarged, which of the following would be prolonged? A. ST segment B. QRS interval C. PR interval D. R…
Published	01/14/2024	Which of these is true of cardiac depolarization? A. Right atrium is depolarized earlier than the left atrium B. Right bundle branch is depolariz…
Published	01/14/2024	The resting membrane potential of ventricular muscles is primarily due to A. K+ influx B. K+ efflux C. Na+ influx D. Na+ efflux
Published	01/14/2024	Mark computed the mean electrical axis of a patient and it was (-)60 degrees. This indicates A. left axis deviationB. right axis deviation C. ext…
Published	01/14/2024	The discharge rate of nodal cells can be decreased by increasing the A. threshold potential (more negative) B. initial resting membrane potent…
Published	01/14/2024	What subdivision of the mediastinum contains the arch of the aorta, tracheal bifurcation and arch of the azygos vein? A. Anterior mediastinum …
Published	01/14/2024	A 50-year-old male is admitted to the CCU (Coronary Care Unit) due to chronic angina (chest pain). Coronary angiogram (imaging test for coron…
Published	01/14/2024	Which of the following also constitute as the visceral layer of the serous pericardium? A. Endocardium B. Myocardium C. Epicardium D. Ectocar…
Published	01/14/2024	Which of the following structures traverse both the superior mediastinum and the posterior mediastinum? A. Esophagus and trachea B. Aorta …
Published	01/14/2024	A 42-year-old male was admitted to the hospital after a head-on collision in which he received a severe blunt trauma to his sternum from a steering…
Published	01/14/2024	This forms the immediate lateral boundary of the mediastinum A. Root of the lungs B. Mediastinal surface of the lungs C. Mediastinal pleur…
Published	01/14/2024	A 55-year-old female is undergoing aortic valve replacement. As the surgeon explores the oblique pericardial sinus with his fingers, the following …
Published	01/14/2024	A 40-year-old man came to your clinic complaining of discomfort upon swallowing. Imaging of the heart revealed a dilated left atrium. Which structu…
Published	01/14/2024	The oblique pericardial sinus is a recess that separates the left atrium from the esophagus.  True False
Published	01/14/2024	The body of the sternum forms the anterior boundary of the superior mediastinum. True False
Published	01/14/2024	The left coronary artery arises from the left aortic sinus. True False
Published	01/14/2024	The diaphragmatic surface of the heart is predominantly made up of the left atrium. True False
Published	01/14/2024	The arch of the aorta is situated within the middle mediastinum. True False
Published	01/14/2024	Blood from the heart wall drains to the right atrium through the great, middle, and anterior cardiac veins. True False
Published	01/14/2024	The heart is anchored to the great vessels at its superior border. True False
Published	01/14/2024	The crista terminalis refers to an intra-atrial groove demarcating the left atrium from the left auricle. True False
Published	01/14/2024	The epicardium is lined by the reflection of the serous pericardium of the heart. True False
Published	01/14/2024	The bundle of His traverses the membranous portion of the interatrial septum. True False
Published	01/14/2024	The U wave following the T wave can sometimes be seen in the following conditions A. Bradycardia and hypokalemia B. Tachycardia and hyperkalemia&n…
Published	01/14/2024	The Q wave in the QRS interval can sometimes be absent. True False
Published	01/14/2024	Which of the following mean vector/s is/are directed posteriorly, inferiorly and leftward? A. QRS only B. Both QRS and T C. T only D. P and T…
Published	01/14/2024	Verapamil, an antihypertensive drug, acts on this phase of the cardiac action potential A. Zero B. One C. Two D. Three
Published	01/14/2024	Slow response action potential is a characteristic of these cardiac cells A. Atrial muscles B. AV junctional region C. Ventricular muscles D.…
Published	01/14/2024	The negative electrodes of these two leads are placed at the right atrium A. I and II B. II and III C. aVR and I D. aVR and II
Published	01/14/2024	The ECG tracing of your patient shows a QT interval of 0.4 seconds. The amplitude is therefore __ mm. A. Four B. Five C. Eight D. Ten
Published	01/14/2024	One of the following measures the A-V conduction time A. PR interval B. PQ interval C. QR interval D. QT interval
Published	01/14/2024	This ion has the greatest effect on the resting membrane potential of the heart A. Calcium B. Chloride C. Potassium D. Sodium
Published	01/14/2024	Which of the following statements is true regarding the fast (FRAP) and the slow response action potential (SRAP)? A. FRAP has a higher resting me…
Status	Last Update	Fields