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PNB 2265 Exam 1 UPDATED Exam Questions and CORRECT Answers $8.49   Add to cart

Exam (elaborations)

PNB 2265 Exam 1 UPDATED Exam Questions and CORRECT Answers

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  • PNB 2265
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  • PNB 2265

PNB 2265 Exam 1 UPDATED Exam Questions and CORRECT Answers This question refers to EKG traces in this figure below. At what point are the atria repolarizing? - CORRECT ANSWER- QRS Cardiac anastomoses - CORRECT ANSWER- Webbing of fibers in cardiac muscles only. They pick up the slack of othe...

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  • October 12, 2024
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  • Exam (elaborations)
  • Questions & answers
  • PNB 2265
  • PNB 2265
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PNB 2265 Exam 1 UPDATED Exam
Questions and CORRECT Answers
This question refers to EKG traces in this figure below. At what point are the atria
repolarizing? - CORRECT ANSWER- ✔✔QRS



Cardiac anastomoses - CORRECT ANSWER- ✔✔Webbing of fibers in cardiac muscles only.
They pick up the slack of other fibers during contraction and act as bumping points for
communication between cells.


This question refers to the figure below. Which currents are NOT active during the plateau
phase of the action potential in panel A? (contractile myocyte) - CORRECT ANSWER-
✔✔Inward sodium current


Which of the following components of plasma is responsible for blood clotting? - CORRECT
ANSWER- ✔✔fibrinogens


This question refers to EKG traces in the figure below. At what point are the ventricles
depolarizing? - CORRECT ANSWER- ✔✔QRS


When mean arteriole blood pressure fails, baroreceptors in the _____ will _____ their firing
rate - CORRECT ANSWER- ✔✔carotid arteries, decrease


Follow the correct path of blood through the heart, beginning at the LEFT ATRIUM: -
CORRECT ANSWER- ✔✔Bicuspid valve --> Left Ventricle --> SL Valve --> Aorta


This question refers to the figure below. What effect will norepinephrine have on the action
potential shown in panel B? (pacemaker action potential) - CORRECT ANSWER-
✔✔Increase current through HCN channels


A pathological accumulation of fluid in the pericardium is called Cardiac Tamponade -
CORRECT ANSWER- ✔✔True

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