![exg final2.png](https://static.wixstatic.com/media/c851b6_2fa615b0495349729ff913be4f01216e~mv2.png/v1/fill/w_79,h_44,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/exg%20final2.png)
![Logo design ppt.014.png](https://static.wixstatic.com/media/c851b6_741b74603c584ea1ae3c6cfa99dc6106~mv2.png/v1/fill/w_369,h_266,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Logo%20design%20ppt_014.png)
The Limb Leads
![exg final2.png](https://static.wixstatic.com/media/c851b6_2fa615b0495349729ff913be4f01216e~mv2.png/v1/fill/w_66,h_31,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/exg%20final2.png)
![exg final2.png](https://static.wixstatic.com/media/c851b6_2fa615b0495349729ff913be4f01216e~mv2.png/v1/fill/w_66,h_40,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/exg%20final2.png)
![exg final2.png](https://static.wixstatic.com/media/c851b6_2fa615b0495349729ff913be4f01216e~mv2.png/v1/fill/w_79,h_44,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/exg%20final2.png)
![exg final2.png](https://static.wixstatic.com/media/c851b6_2fa615b0495349729ff913be4f01216e~mv2.png/v1/fill/w_79,h_44,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/exg%20final2.png)
![Screenshot 2020-12-25 at 01.48.00.png](https://static.wixstatic.com/media/c851b6_bd42b225a18643d883d18b277887486e~mv2.png/v1/crop/x_446,y_415,w_1498,h_893/fill/w_274,h_171,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Screenshot%202020-12-25%20at%2001_48_00.png)
Undergraduate ECG Teaching
Question 1.
Which valve prevents backflow of blood from the highlighted chamber?
![Screenshot 2022-11-01 at 00.18.59.png](https://static.wixstatic.com/media/c851b6_8a9d90b316c34a83930009d912456ae5~mv2.png/v1/fill/w_389,h_487,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Screenshot%202022-11-01%20at%2000_18_59.png)
Question 2.
Which fibre of conducting tissue has been labelled with a black arrow?
![Screenshot 2022-11-01 at 00.27.04.png](https://static.wixstatic.com/media/c851b6_a3a16b5249ee487ea72992db4726fa68~mv2.png/v1/fill/w_389,h_487,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Screenshot%202022-11-01%20at%2000_27_04.png)
Question 3.
![Screenshot 2022-11-01 at 01.16.11.png](https://static.wixstatic.com/media/c851b6_ae0642ed8e3f4ed388e06b45d244a68a~mv2.png/v1/crop/x_76,y_0,w_1260,h_1232/fill/w_113,h_110,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2001_16_11.png)
Which structure is shown here in this secion of the left side of the heart?
Question 4.
Which coronary artery has been labelled?
![Screenshot 2022-11-01 at 02.23.16.png](https://static.wixstatic.com/media/c851b6_e897754782af46268528a09d473d124f~mv2.png/v1/crop/x_0,y_43,w_1212,h_1338/fill/w_113,h_125,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_23_16.png)
Question 5.
![Screenshot 2022-11-01 at 02.28.22.png](https://static.wixstatic.com/media/c851b6_9ee435a812aa45159042273529dc36ab~mv2.png/v1/crop/x_71,y_0,w_1073,h_1182/fill/w_113,h_125,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_28_22.png)
All areas of the conducting system are capable of acting as a pacemaker for the heart but which site depolarises spontaneously with a rate of 100bpm?
Question 6.
Which area of the cardiac conducting pathway conducts electrical signals the most slowly?
![Screenshot 2022-11-01 at 02.28.22.png](https://static.wixstatic.com/media/c851b6_9ee435a812aa45159042273529dc36ab~mv2.png/v1/crop/x_71,y_0,w_1073,h_1182/fill/w_113,h_125,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_28_22.png)
Question 7.
Which coronary artery most commonly supplies both the AV node and the sino-atrial node, as well as the inferior aspect of the heart?
![Screenshot 2022-11-01 at 02.34.46.png](https://static.wixstatic.com/media/c851b6_f90e2ea390e9487bbabeb40964e69389~mv2.png/v1/crop/x_0,y_25,w_1112,h_1286/fill/w_96,h_111,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_34_46.png)
Question 8.
![Screenshot 2022-11-01 at 02.38.57.png](https://static.wixstatic.com/media/c851b6_74e79dfcf09744b48bf9ae60ccae4f30~mv2.png/v1/crop/x_0,y_5,w_1220,h_1411/fill/w_114,h_132,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_38_57.png)
True or false, in 80% of patients the posterior descending artery is a continuation of the left main stem artery/circumflex artery
Question 9.
![Screenshot 2022-11-01 at 02.38.57.png](https://static.wixstatic.com/media/c851b6_74e79dfcf09744b48bf9ae60ccae4f30~mv2.png/v1/crop/x_0,y_5,w_1220,h_1411/fill/w_114,h_132,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_38_57.png)
Blockage of which coronary artery most frequently leads to untable arrhythmias such a complete heart block
Question 10.
![Screenshot 2022-11-01 at 02.49.41.png](https://static.wixstatic.com/media/c851b6_fe9161edd8794812b679ea98bba0cd30~mv2.png/v1/crop/x_44,y_0,w_1221,h_1410/fill/w_115,h_132,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/Screenshot%202022-11-01%20at%2002_49_41.png)
Which cardiac structure prevents electrical activity from the sino-atrial node from bypassing the AV node