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Body Atlas, Muscle Reference

Muscles

Complete muscle reference, origins, insertions, nerve supply, actions, clinical notes, and common injuries.

12 muscles

12 muscles in Abdomen Clear ×

Muscle Cremaster musculus cremaster Abdomen The cremaster is a thin layer of skeletal muscle derived from the internal oblique that forms… Muscle Dartos Muscle musculus dartos scroti Abdomen The dartos is a smooth muscle layer (not skeletal muscle) in the superficial scrotal fascia, innervated… Muscle Dartos Muscle musculus dartos scroti Abdomen The dartos is a smooth muscle layer in the scrotal skin that contracts to rugose and… Muscle Detrusor Muscle musculus detrusor vesicae Abdomen The detrusor is the smooth muscle of the bladder wall responsible for both bladder storage (by… Muscle External Oblique musculus obliquus externus abdominis Abdomen The external oblique is the largest and most superficial of the flat abdominal muscles, with fibres… Muscle External Oblique (Full) musculus obliquus externus abdominis Abdomen The external oblique is the largest and most superficial lateral abdominal muscle. Its fibres run inferomedially… Muscle Internal Oblique musculus obliquus internus abdominis Abdomen The internal oblique has fibres running roughly perpendicular to the external oblique, with most fibres directed… Muscle Internal Oblique (Full) musculus obliquus internus abdominis Abdomen The internal oblique lies deep to the external oblique with fibres running at 90 degrees to… Muscle Rectus Abdominis musculus rectus abdominis Abdomen The rectus abdominis is the paired, vertically oriented muscle running from the pubis to the lower… Muscle Rectus Abdominis musculus rectus abdominis Abdomen The rectus abdominis is the paired superficial anterior abdominal muscle running vertically between the pubis and… Muscle Rectus Abdominis (Full) musculus rectus abdominis Abdomen The rectus abdominis runs vertically between the pubis and the costal cartilages, interrupted by three horizontal… Muscle Transversus Abdominis musculus transversus abdominis Abdomen The transversus abdominis is the deepest abdominal muscle with horizontal fibres wrapping around the trunk like…