Background: Menopause marks a critical transition in female life history and is defined as the permanent cessation of menstruation for at least 12 consecutive months, reflecting irreversible reproductive senescence. Women with more feminine (higher) 2D:4D ratios have been reporte...
Open access
Research Article10.9734/ajmpcp/2026/v9i1429
Gospel Uchechukwu Collins, Israel Ukie Gwunireama, Barisuka Sudum Sunday & Sunday Promise Iburu·Asian Journal of Biology·2026
Background: Menarche (the onset of menstrual bleeding) and menopause (the cessation of menstruation) are important events in the reproductive history of women. They mark the beginning and end of the reproduction period of women. The aim of this study was to investigate the relati...
Open access
Research Article10.9734/ajob/2026/v22i5655
Israel Ukie Gwunireama, Gospel Uchechukwu Collins, Bariereyiga Nadum Yirate & Sunday Promise Iburu·Asian Journal of Biology·2026
Background: Papillary muscles are important structures in the ventricles of the heart that work with the chordae tendineae to support the atrioventricular valves and prevent backward flow of blood during contraction. They differ in number, size, and arrangement between the right...
Open access
Research Article10.9734/ajob/2026/v22i5653