The pumping action Study guides, Class notes & Summaries

electrical conduction of the heart The flow of electrical current causes smooth, coordinated heart contractions; they produce pumping action of the heart Depolarization electrical charges on the surface of the muscle cell change from positive to negative Repolarization the heart returns to its resting state, and the positive charge is restored to the surface Where do the electrical impulses begin? Electrical impulses begin high in the atria in the sinoatrial node, travel to the atrioventr...

• NRS 225 Perfusion- Shock, Cardiomyopathy, DIC Perfusion • Normal Perfusion o 3 Layers: epicardium (outer most); myocardium; endocardium (inner most) o 4 Chambers: 2 atria; 2 ventricles o Pump- Heart; Tubing- Blood Vessels; Fluid- Blood o Systole: ventricular contraction // Diastole: ventricular relaxation: “lub-dub” o Circulation ▪ Pulmonary: right side of heart  lungs ▪ Systemic: left side of heart  body ▪ Coronary: supplies heart o Cardiac Cycle: contractio...

A nurse seeks to establish a relationship with a patient readmitted to the hospital. The patient has bipolar disorder, depressed type, and was hospitalized the preceding month. Which statement by the nurse would contribute to establishing trust? A. "Weren't you complying with your medication regimen?" B. "It must be discouraging to be readmitted to the hospital so soon." C. "Everyone with bipolar disorder ends up in the hospital occasionally." D."You must take your drugs a...

loop of Henle correct answers where Na+ is reabsorbed from the filtrate moving through the nephron This is ultimately the mechanism whereby the kidneys concentrate urine - section of the nephron tubule that conserves water and minimizes the volume of urine action potentials result in correct answers an increased permeability of the plasma membrane to sodium - Na+ in causes depolarization hyperglycemia promotes cellular dehydration because correct answers glucose molecules raise the osmo...

Z-51 Written Exam Questions and Complete Solutions In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft. - Answer: D) Maintain axial positioning of the rotor shaft. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of given temperature is A) partial pressure....

NURA 2500 CARDIO TEST QUESTIONS AND ANSWERS What are the symptoms of an AV block? - Answer--fainting/syncope -heart failure -cardiac arrest and death -hypotension This is the mildest form of the heart blocks and is rarely symptomatic. There are very few times this rhythm will receive treatment. - Answer-first degree heart block In first degree heart block the electrical signals from the atria to the ventricles are - Answer-delayed, causing long PR intervals In a first degree heart ...

Which of the following is NOT a function of the circulatory system? 1. Pumping blood throughout the body to provide tissues and organs with nutrients and oxygen. 2. Removing toxins and waste from the blood. 3. Transmitting nerve impulses between the brain and the rest of the body. 4. Transporting important hormonesreleased from glandsto theirsites of action. Correct Incorrect The circulatory system consists of the heart, blood vessels, lymph, lymph nodes, and blood. It circulates materia...

electrical conduction of the heart The flow of electrical current causes smooth, coordinated heart contractions; they produce pumping action of the heart Depolarization electrical charges on the surface of the muscle cell change from positive to negative Repolarization the heart returns to its resting state, and the positive charge is restored to the surface Where do the electrical impulses begin? Electrical impulses begin high in the atria in the sinoatrial node, travel to the atrioventr...

Pumping Apparatus Questions with Accurate Answers What is the formula for the customary discharge rate? A. GPM= 29.7 x d2 x √NP B. GPM= 1.57 x NP x D2 C. GPM= 29.7 x √D x NP2 D. GPM= √29.7 x d2 x NP A Which NFPA standard gives direction for establishing a driving training program. A. 1450 B. 1451 C. 1560 D. 1561 A In general, to what vehicular statutes, laws and ordinances is the driver subject A. Only those concerning fire service driver/operators B. Only those ...

Which of the following is NOT a function of the circulatory system? 1. Pumping blood throughout the body to provide tissues and organs with nutrients and oxygen. 2. Removing toxins and waste from the blood. 3. Transmitting nerve impulses between the brain and the rest of the body. 4. Transporting important hormones released from glandsto theirsites of action. Correct Incorrect The circulatory system consists of the heart, blood vessels, lymph, lymph nodes, and blood. It circulates materi...