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
Surgery
Viagra (sildenafil) produces its physiological effects by blocking the enzyme that hydrolyzes the second messenger by which nitric oxide produces its physiological effects. The second messenger is
Bradykinin
Cyclic GMP
Protein kinase A
Endothelin
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