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EXAM 4 PREP
Sectional Anatomy
| Question | Answer |
|---|---|
| Which arteries supply the myocardium? | Coronary |
| True or False: The muscle fibers within the heart can contract without stimulation from the SA or the AV nodes. | True |
| What is the function of the chordae tendinae and papillary muscles? | Prevent the leaflets of the atroventricular valves from prolapsing during systole |
| What is dextrocardia? | A heart with the apex pointing to the right (mirror image) |
| Which structure surrounds the heart and allows for unrestricted movement as the heart beats? | Pericardium |
| When examining a normal ECG tracing, what does the "QRS complex" represent? | The beginning of systole |
| The left, right, left anterior descending, and circumflex arteries are all part of the? | Arterial blood supply to the myocardium |
| Which component of the cardiac conduction system is considered the "pacemaker of the heart" | SA node |
| What is the relationship of the pulmonary artery in the aorta as a result of the spiraling of the aorticopulmonary trunk? | The pulmonary artery wraps around the aorta at the base of the heart |
| How many components of the cardiac conduction system can act to regulate the pace of the cardiac cycle if the primary pacemaker fails? | Four |
| In a normal heart the ? pulmonary veins will empty into the ? atrium. | Four, Left |
| How many valves are located in the normal pediatric heart? | Four |
| True or False: According to the textbook, blood flowing towards the transducer will be shown above the zero baseline while blood flow moving away from the transducer will be shown below the zero baseline on a spectral Doppler waveform. | True |
| Listening to the heart sounds with a stethoscople is known as? | Auscultation |
| The semilunar valves (aortic & pulmonic) normally contain ? leaflets. | Three |
| When dealing with lower extremity venous duplex imaging, what does the term "coapt" mean? | Pushed together with transucer pressure |
| What is the most important step in the 3D ultrasound imaging process? | Data Acquisition |
| 3D sonography is composed of acquisition, reconstruction, and ? in multiple scanning planes. | Evaluation |
| What hemodynamic flow pattern characterizes normal blood flow to the brain? | Low-resistance |
| What is the major collateral pathway for intracranial blood flow? | The Circle of Willis |
| Examining the hemodynamics of blood flow at an area of stenosis is known as ?vascular testing. | Direct |
| What is the biggest advantage for performing interventional ultrasound procedures? | The site of interest is easily located and the needle can be imaged and tracked. |
| True or False: The normal common carotid artery Doppler spectral waveform has both high-resistance and low-resistance flow patterns that mimic the flow in the ICA and ECA. | True |
| In what areas of sonography is 3D technology currently being used? | Pediatrics, Abdomen, Small Parts, etc. |
| True or False: The right and left extracranial cerebrovascular systems are usually asymmetrical. | False |
| What is the function of the perforator veins, which are located in the lower extremities? | To route blood from the superficial venous system to the deep venous system |
| Why is the blood pressure higher in the tibial arteries than in the aorta? | Increased flow resistance due to the smaller diameter of the tibial arteries. |
| Ligaments connect? | Bones to bones |
| What divides the muscular tissue into bundles of muscle fibers? | Perimysium |
| What tendons are typically visualized during a shoulder ultrasound? | Infraspinatus, Subscapularis, Supraspinatus |
| Which statement most accurately describes the anatomical relationships of the biceps tendon? | The biceps tendon courses superiorly between the subscapularis and supraspinatus tendon. |
| Which patient position is required when imaging the Achilles tendon? | Prone with foot hanging off the table. |
| True or False: The distal attachment of the tendon is termed the origin while the proximal attachment is called insertion. | False |
| In which imaging plane does the median nerve have an oval shape with a honeycomb appearance? | Transverse |
| Tendons connect? | Muscles to Bones |
| The median nerve is measured at the wirst crease and again... | 12 cm from the crease |