Follicular and luteal phase lengths. â variability of menstrual cycle. attributable to follicular phase. â  Mean cycle length ranges from 27.3 to 30.1 days between ages 20 and 40 years, follicular. phase length is 13-15 days, and luteal phase length is less variable and averages. 13-14 days1-3.
Any sequence of seven successive natural notes, such as C-D-E-F-G-A-B, and any transposition thereof, is a diatonic scale. Piano keyboards are designed to play natural notes, and hence diatonic scales, with their white keys. A diatonic scale can be also described as two tetrachords separated by a whole tone.
The Dominant 7th scale is one of the many named scales used in a jazz context. It should be like the major scale, but with a flat 7th. From Jamey Aebersold's Scale Syllabus, it has the following pattern of whole and half steps: W W H W W H W (in C: C D E F G A Bb C).This is also commonly known as the mixolydian scale.he Dominant 7th scale is one of the many named scales used in a jazz context. It should be like the major scale, but with a flat 7th. From Jamey Aebersold's Scale Syllabus, it has the following pattern of whole and half steps: W W H W W H W (in C: C D E F G A Bb C).