"the electron from the conduction band then returns to the valence band and due to the energy difference must lose energy in the form of an emitted photon."
Line 9:155·Do not put full stops at the end of a list item.
Headings Valid
warning
Expected headings
H1
Summary
H1
Gross anatomy
H2
Location
H2
Size
H2
Structure
H2
Relations
H2
Function
H1
Arterial supply
H1
Venous drainage
H1
Lymphatic drainage
H1
Innervation
H1
Histology
H1
Variant anatomy
H1
Radiographic features
H2
Plain radiograph
H2
Ultrasound
H2
CT
H2
MRI
H2
Nuclear medicine
H1
Development
H1
Clinical importance
H1
Related pathology
H1
History and etymology
H1
See also
"Application"
Line 11:1·"Application" is not a recognised heading for this article type.
"Structure"
Line 13:1·"Structure" is under the wrong parent heading (found under "").