Myology Flashcards
The perineal body serves as an attachment point for what muscles?
Bulbospongiosus M.
External Anal sphincter M.
Superficial Transverse perineal M.
Deep Transverse perineal M.
What 3 muscles are classified as superficial perineal Ms.?
Superficial Transverse Perineal M.
Ischiocavernosus M.
Bulbospongiosus M.
What separates the urogenital diaphragm from the superficial perineal ms.?
Perineal Membrane
What are the muscles innervated by the Deep Perineal N?
All superifcial perineal Ms. (Superficial transverse perineal m., ischiocavernosus M., bulbospongiosus M.)
Deep Transverse perineal M.
Together, the External Urethral Sphincter M. and the Deep Transverse Perineal M. make up what?
Urogenital diaphragm
What innervates the External Urethral Sphincter M.?
Dorsal Nerve of the Penis (M)/Clitoris (F)
What is the action of the external urethral sphincter m.?
Constrict urethra and maintain urinary continence
What is the innervation of the external anal sphincter M.?
Inferior Rectal N.
What is the innervation of the Internal Anal SPhincter M.?
Parasympathetic fibers from Pelvic Splanchnic Ns.
What muscles make up the Pelvic Diaphragm?
Levator Ani Ms. (Puborectalis M, pubococcygeus M, Iliococcygeus M.)
Coccygeus M.
What muscle makes up the main part of the Levator Ani Ms.?
Pubococcygeus M.
Where doe the Obturator Internus M. and the Piroformis M. insert on?
Greater Trochanter of the femur
