Which structure is not functioning properly if an electrical device is needed to stimulate the atria to contract? Select one: O a. SA node O b. bundle of His O c. chordae tendineae O d. AV node
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- Sympathetic innervation of cardiac muscle originates froma. CN X (vagus nerve).b. L1–L2 segments of the spinal cord.c. the AV node.d. T1–T5 segments of the spinal cord.Which of the following is an example of muscular arteries? O A. brachial O B. brachiocephalic O C. subclavian OD. common iliacWhat vessel is the primary drainage for the brain? Select one: a.azygos vein b.internal jugular vein c.external jugular veinexternal jugular vein d.external jugular veine.brachiocephalic vein
- Which chamber initially receives blood from thesystemic circuit?a. left atriumb. left ventriclec. right atriumd. right ventricleWhat blood vessel enters the cranium to supply the brain with fresh, oxygenated blood?a. common carotid arteryb. jugular veinc. internal carotid arteryd. aortaWhich primitive area of the heart will give rise to theright ventricle?a. bulbus cordisb. primitive ventriclec. sinus venosusd. truncus arteriosus
- Mr. Rogers is admitted into the Emergency room. When asked about his symptoms, Mr. Rogers claims that he feels pain whenever he touches his left forearm. The patient has no lesion, no history with injury to his forearm, and does not have a sunburn. His blood pressure and cholesterol levels are normal and overall Mr Rogers seems like a healthy man. What is Mr. Rogers suffering from? A. Referred pain from a myocardial infarction B. Diffuse pain from activation of Aδ and C fibers C. Allodynia D. Hyperalgesia E. “Wind up”, a pain-induced persistent increases in excitability and synaptic transmission in the ventral horn F. HabituationWhich condition would cause a diastolic murmur? A regurgitation of blood through an incompetent tricuspid valve B regurgitation of blood through an incompetent mitral valve C regurgitation of blood through an incompetent aortic semilunar valveWhich of the following could be the correct pathway of travel for a blood cell currently in the brachiocephalic artery? O A. right arm radial artery>right arm cephalic vein> back to heart O B. left arm radial artery>left arm cephalic vein>back to heart O C. right common carotid artery>internal jugular vein>back to heart O D. left common carotid artery>internal jugular vein>back to heart O E. all of the above are possible F. none of the above a possible G. both A and C would be possible O H. both B and D would be possible O I. both A and B would be possible O J. both C and D would be possible
- Which cell types are associated with spontaneous action potential generation in the absence of an external stimulus from other tissues. A. Sino-Atrial node cells (SA node). B. Atrial cells C. Ventricular cells. D. Endothelial cells. E. A and D.When blood pressure drops after an injury, the body's response to re-adjust the pressure is increased sympathetic stimulation resulting in (ie. how does the body respond to low blood pressure to bring it back up?) O a. decreased arteriolar dilation and increased cardiac output O b. decreased arteriolar dilation and decreased cardiac output O c. increased arteriolar dilation and decreased cardiac output O d. increased arteriolar dilation and increased cardiac outputWhich of the following would contain all the venous return specifically from the left upper limb, left head/brain and neck? Select one: a.Left internal jugular vein b.Left Axillary vein c.Superior vena cava d.Left subclavian vein e.Left Brachiocephalic vein