Pelvic Floor OINAPS

internal urethral sphincter location

bladder neck, prostate and urethra in males

internal urethral sphincter muscle type

smooth muscle

internal urethral sphincter control type

involuntary

internal urethral sphincter nerve

sympathetic, hypogastric nerve (T11-L2)

internal urethral sphincter action

closed during bladder filling, prevents retrograde ejaculation in males

external urethral sphincter location

around membranous urethra, deep perineal pouch

external urethral sphincter muscle type

skeletal muscle

external urethral sphincter control type

voluntary

external urethral sphincter nerve

pudendal nerve (S2-S4)

external urethral sphincter action

squeezes urethra closed for continence

pectoralis major clavicular head origin

anterior surface of medial half of clavicle

pectoralis major sternocostal head origin

anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique

pectoralis major insertion

lateral lip of intertubercular groove of humerus

pectoralis major clavicular head nerve

lateral pectoral nerve (C5-C6)

pectoralis major sternocostal head nerve

medial pectoral nerve (C8-T1)

pectoralis major clavicular head action

shoulder adduction, shoulder medial rotation, scapular protraction, scapular depression, shoulder flexion

pectoralis major sternocostal head action

shoulder adduction, shoulder medial rotation, scapular protraction, scapular depression, shoulder extension from flexed position

pectoralis major perfusion

pectoralis minor origin

3rd-5th ribs, 3rd-5th costal cartilages

pectoralis minor insertion

medial border and superior surface of coracoid process of scapula

pectoralis minor nerve

medial pectoral nerve (C8-T1)

pectoralis minor action

scapula stabilization, scapular protraction, scapular depression

pectoralis minor perfusion

ischiocavernosus proximal attachment

internal surface of ischiopubic ramus, ischial tuberosity

ischiocavernosus distal attachment

inferior and medial aspect of crus, perineal membrane medial to crus

ischiocavernosus nerve

pudendal nerve (S2-S4)

ischiocavernosus action

move blood from crura to erect penis or clitoris

ischiocavernosus perfusion

bulbospongiosus proximal attachment

bulbospongiosus distal attachment

bulbospongiosus nerve

bulbospongiosus action

bulbospongiosus perfusion