l3 WoPlh 1 point. Take you time and be sure to read the questions carefully whil
ID: 3481078 • Letter: L
Question
l3 WoPlh 1 point. Take you time and be sure to read the questions carefully while answering. 1. Through which order of vessels does blood flow, as it leaves the heart? A) arteries, arterioles, capillaries, venules, veins B) arteries, veins, venules, arterioles, capillaries C) arterioles, arteries, capillaries, venules, veins D) veins, venules, capillaries, arterioles, arteries E) veins, capillaries, venules, arterioles, arteries 2. Which statement best describes parallel flow in the circulatory system? A) The organs of the body are arranged in a parallel circuit to allow adequate flow and pressure to all body systems and maintain homeostasis of blood pressure. B) Parallel flow refers to deoxygenated blood only and not to oxygenated blood. C) Parallel flow refers to the flow of blood just to the heart itself, which keeps it oxygenated at all times. D) In the systemic circuit blood flows from one organ directly to the next, hence in parallel. E) Parallel flow refers to the flow of electrical impulses in the heart. 3. Which of the following is the correct conduction pathway through the heart? A) Purkinje fibers, bundle of His, bundle branches, SA node, AV node B) SA node, AV node, bundle of His, bundle branches, Purkinje fibers C) AV node, SA node, bundle branches, bundle of His, Purkinje fibers D) Bundle of His, bundle branches, Purkinje fibers, SA node, AV node E) SA node, Purkinje fibers, AV node, bundle of His, bundle branches 4. Which of the following components of an ECG represents ventricular depolarization? A) P wave B) QRS complex C) T wave D) PQ interval E) TQ segmentExplanation / Answer
1. A. Arteries,arterioles, capillaries,venules,veins.
Blood leaves from the heart through arteries which divide into arterioles. These arterioles enter into an organ and divide into capillaries which send blood into the organ. Capillaries on the other side unite and form venules which merge to form vein.
2.
3. B. SA node, AV node, bundle of His, bundle branches, purkinje fibers.
Impulse generates in SA node which is transmitted to AV node. AV node sends the impulse to bundle of His which divides into bundle branches. These branches give rise to purkinje fibers.
4.B. QRS Complex.
QRS Complex represents joint ventricular contraction and simultaneous atrial relaxation.
5. D. PQ interval.
PQ interval represents interval between atrial contraction and spread of impulse to AV node for ventricular contraction.
6. True.
Cardiac cycle represents all the events occurring in heart during one heartbeat.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.