Doclaura

Be familiar with lab safety - ANS Units of measurement and how to convert - ANS Kilo, hecto, deka, mlg, deci, centi, milli Meters measures - ANS Length Liters measures - ANS Liquid volume Grams measures - ANS Mass/weight Instruments/ lab equipment for measuring - ANS What is the relationship between volume and mass? - ANS Volume is not usually proportional to mass (materials have different densities) What are the boil...

The complete genetic makeup of an organism is called its - ANS genome Imagine that a scientist was able to take pictures of atoms and the position of their electrons. In one molecule, he found that the shared electron was around one atom 50% of the time and around the second atom 50% of the time. From this he concluded that these atoms shared what type of bond? - ANS nonpolar covalent Which of these is not a testable hypothesis? - ANS dogs are happier when they are ...

Base - ANS bottom part of the microscope Illuminator - ANS source of light Fine Adjustment - ANS only used with high power objective. Coarse Adjustment - ANS large focusing knob. not used for high power. Adjustable Diaphragm - ANS controls light to the slide Stage - ANS flat area that holds the specimen mounted on a glass slide Slide - ANS small glass that holds the specimen Slide Holder - ANS movable part that ...

Alberts Molecular Biology of Cell - Chapter 1 Study of structure, function, and behaviour of cells - ANS Cell Biology All living cells store hereditary info in form of double stranded molecules of... - ANS DNA Made up of nucleotides - ANS DNA Consists of sugar (deoxyribose), phosphate molecule with nitrogen containing side group or base - ANS Nucleotides ...are of four types: Adenine, guanine, cytosine, ...

A medical assistant is preparing a patient who is having shortness of breath for an EKG. In which position should you position the patient - ANS Semi-Fowler's A medical assistant is preparing a patient for an EKG. Which of the following instructions should the medical assistant provide - ANS Remove all clothing from the waist up Your preparing to perform an EKG recording on a patient. Which of the following information is true of limb leads and electrodes. - ANS ...

Which are characteristics of the diastole phase? - ANS -The heart is @ rest -The atria fill c blood -It is part of the cardiac cycle The healthcare provider asks a medical assistant to perform a 12-lead electrocardiogram. The patient's chest is hairy. Which action does the medical assistant take first in this case? - ANS Dry shave chest at electrode site Which is the location of the tricuspid valve? - ANS Between the right atrium and right ventricle Which co...

Small Boxes: How many seconds are there? ANS - 0.04 Small Boxes: There are _ seconds ANS - 0.04 Small Boxes: There are _ seconds in this box ANS - 0.04 Small Boxes: How many small boxes are in a large box? ANS - 5 Small Boxes: There are _ small boxes in a _ _ ANS - 5; large box Small Boxes: 1. These are _ _ long 2. There are _ _ _ in a _ box ANS - 1. 0.04 seconds 2. 5 small boxes; large How many seconds are in a LARGE box? ANS - 0.2 Lar...

a ma is calibrating an EKG machine. which of the following should the assistant identify as the standard speed of the recording 25 mm/sec 50 mm/sec 10 mm/sec 5 mm/sec - ANS 25 mm/sec when performing an EKG on a patient, a ma notices a widened QRS complex on the patient's EKG strip. which of the following is a possible cause of this type of artifact atrial fibrillation bradycardia sinus dysrhythmia premature ventricular contraction - ANS premature ventricular contra...

When a pacemaker fires, it creates what sign on the EKG? A P wave A spike A T wave A QRS complex - ANS A spike __________________ is NOT used in the treatment of rapid ventricular arrhythmias. Lidocaine Amiodarone Procainamide Digitalis - ANS Digitalis ______________________ is NOT a characteristic of a PVC? The T wave and the QRS are pointed in opposite directions The T wave and the QRS are pointed in the same direction The beat is premature and arises before th...

1st step - make sure it's regular 2nd step - calculate HR 3rd step - look at pwaves and make sure they are regular throughout 4th step - measure PR interval 5th step - look at QRS complexes make sure they're not inverted or wide 6th step - look at R-R interval and QT segment and make sure that the QT is less than half of the R to R - ANS What are the steps to interpreting a strip? normal sinus rhythm -originates in SA node -synchrony between atria and ventricles - 60 to ...

Heart - ANS Is a hollow muscular organ Mediastenum - ANS Just be hide the sternum Heart Base - ANS Is located at the level of the second intercosstal and the tip of the heart Apex - ANS Is located at the level of 5th intercostal and mid-clavicular lone on the left Heart Skeleton - ANS Is made of four rings of thick connective tissue. The rings surround the base of the heart and large vessels Internodal pathway - ANS The electrical im...

Layers of the heart - ANS pericardium myocardium endocardium pericardium - ANS outermost layer: fibrous and serous fibrous -outer sack that anchors the heart serous -inner, fluid secreting membrane with two layers -parietal (lines inner surface of fibrous sac) -visceral (AKA epicardium) lines myocardium -between the two is the pericardial space, with 10-30ml of fluid to give the heart space to relax and contract myocardium - ANS i. Thick, middle musc...

A MA is preparing a patient who has shortness of breath for an EKG. Which positions should the assistant place the patient? - ANS Semi-Fowler's Can elevate the head of the bed up to 45 degrees if patient is experiencing dyspnea. A MA is preparing a patient for an EKG. Which instructions should the MA provide? - ANS "Remove all clothing from the waist up." Due to the placement of necessary electrodes for the EKG recording. Patient will need to disrobe from the waist...

Identifying the patient - ANS Minimum of 2 identifiers Name and birthday are most commonly used V1 - ANS Right side of the sternum at the fourth intercostal space V2 - ANS Left side of the sternum, directly across from V1 at the fourth intercostal space V3 - ANS Left side of the chest, midway between V2 and V4 V4 is placed before V3 V4 - ANS Left side of the chest, fifth intercostal space, midclavicular line V5 - ANS Left side of t...

Wandering baseline artifact - ANS - EKG tracing 'drifts away from' the center of the paper - can be caused by improperly applied electrodes, tension on lead wires, and poor skin preparation Syncope - ANS fainting How frequently should an EKG technician disinfect lead wires and clips? - ANS after each patient to prevent cross-contamination Positive deflection on lead aVR - ANS verify lead and electrode placement Dextrocardia - ANS the he...

Which leads are bipolar? - ANS Leads I, II, and III where is lead V8 placed - ANS left mid-scapular line which signs indicate a patient is beginning to show signs of myocardial ischemia - ANS depressed ST segment Where is lead V1 located? - ANS the fourth intercoastal space, just to the right of the sternum Which leads form Einthoven's triangle? - ANS I, II, and III What is the results of atrial depolarization - ANS P wave Wher...

How can cardiac output be calculated? - ANS Stroke volume multiplied by heart rate Briefly explain the Excitability properties of cardiac cells. - ANS Ability of the cells to respond to electrical stimulation What node is the natural pacemaker that generates 60-100 bpm? - ANS Sino Arial (SA) Node The EKG Technician would place how many leads to the chest and how many leads to the limb to obtain a 12 lead EKG? - ANS 6 electrodes to the chest and 4 electrod...

3 layers of the heart - ANS pericardium, myocardium, endocardium Pericardium - ANS Primary function to provide lubrication, preventing friction as the heart beats Myocardium - ANS -responsible for the hearts ability to contract -thick muscle layer Myocardium - ANS Chamber thickness is related to the amount of resistance the muscle must overcome to pulp blood out of the chamber endocardium - ANS -smooth, thin layer of tissue that lines the hear...

tachycardia and bradycardia ANS - >100 bpm <60 bpm Bigeminy ANS - every other complex is a PVC Trigeminy ANS - pattern in which every third complex is a premature beat Premature Junctional Contraction (PJC) ANS - Rate: Normal or accelerated P wave: inverted or absent QRS: normal Conduction: normal rhythm: irregular: PICs occur early in cycle of baseline rhythm -an ectopic pacemaker in the AV Junction produces PJC's -may occur in heatlhy or diseased he...

Pericardium - ANS Outermost layer consisting of fibrous pericardium and serous pericardium fibrous pericardium - ANS Comes in direct contact with lungs Serous pericardium - ANS Inner two layered fluid secreting membrane Myocardium - ANS Middle heart layer, responsible for heart contraction Endocardium - ANS Inner heart layer, fold of this tissue forms valves of the heart Myocardial cells - ANS Working cells, function is cardiac muscl...