Medical MCQ
MCQ Ebook
Biochemistry
Microbiology
Pathology
MCQ Subjects
Anaesthesia
Anatomy
Biochemistry
Dental
ENT
Forensic Medicine
Gynaecology & Obstetrics
Medicine
Microbiology
Ophthalmology
Orthopaedics
Pathology
Pediatrics
Pharmacology
Physiology
Psychiatry
Radiology
Skin
Social & Preventive Medicine
Surgery
Others
MCQ Exam
Anaesthesia
Anatomy
Biochemistry
Dental
ENT
Forensic Medicine
Gynaecology & Obstetrics
Medicine
Microbiology
Ophthalmology
Orthopaedics
Pathology
Pediatrics
Pharmacology
Physiology
Psychiatry
Radiology
Skin
Social & Preventive Medicine
Surgery
Others
All MCQs
Term Of Use
Privacy Policy
Contact Us
About Us
Home
Ebooks
Questions
Search
Pharmacology
Acetylcholine decrease hea rate by which of the following mechanisms?
By decreasing the rate of diastolic depolarization of SA node
By causing delay through AV node
By blocking calcium channels and prolonging the plateau phase
By reducing the rate of ventricular repolarization
Questions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100