All of the following are included in the cardiac electrical conduction system EXCEPT

bundle of His
sinoatrial septum
sinoatrial node
atrioventricular node


sinoatrial septum

Rationale: No electrical impulse is conducted in the sinoatrial septum.

Health Professions

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In response to increasing levels of blood sugar in the blood, ____________________ is secreted by the pancreas in order to control blood sugar levels

a. Glucagon b. Somatostatin c. Thyroxine d. Insulin

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A 17-year-old girl was injured when her car was struck from behind while she was stopped at a red light. She is complaining of a headache with neck and back pain. You suspect she has sustained a(n):

A) extension injury. B) distraction injury. C) compression fracture. D) whiplash injury.

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Which of the following may help in minimizing the stressful effects of the disruption in circadian rhythms seen in EMS multiple-casualty incidents work?

A) Keep your bedroom light on and warm. B) Sleep as much as possible on days off. C) Seek help from a trained professional. D) Eat a heavy meal just before bedtime.

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The first abnormality described in the lymphomas was in Burkitt lymphoma. This first demonstration of a proto-oncogene that was translocated to a location known to be active in B-cell lymphoma,

resulting in the activation of the oncogene, was at what heavy chain locus? a. t(12;21) b. t(8;14) c. 14q32 d. P13;q22

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