This chapter discusses components of differential diagnostics with which the clinician may or may not be familiar; however, they are important in the formation of a functional diagnosis that allows clinicians to better be able to treat their patients. Some of the information will be a review for the reader, whereas other information will be novel. To those for whom the information is novel: enjoy and learn. To those who "know" the information provided in this chapter, take the time to review and reflect on it and apply the concepts to your current practice. S5 Co1 Co2 SCJ X X Pancreas X X Liver X Gall bladder X X X X X Stomach/duodenum X X X X Small intestine X X Epididymis X Colon: ascending X X X X Kidney X X X X Appendix X X X X Ureter X X X Bladder fundus X X X Uterine fundus X X X Bladder neck X X X Vagina/penis X X X Suprarenal gland X X X Ovary/testes X X X Colon; flexure X X X Colon; sigmoid X X X Prostate X X X X Urethra X X X X Rectum X X X Muscle Upper trapezius X X Iliopsoas X X X X X Guteus: med/min X X X Gluteus maximus X X Piriformis X X Obturator internus X X Quadratus femoris X X X X Semitendinosus X X X X X Semimembranosus X X X X X Adductor magnus X X X X Peroneus: longus, brevis & tertius X X X X Tibialis anterior X X X X Ext. hall. Long/brevis X X X X X Triceps surae X X X X X Peroneus tertius X X X X X S5 Co1 Co2 Levator ani X X X X Superficial transverse perineal X X X X Deep transverse perineal X X X X Bulbospongiosus X X X X Ischiocavernosus X X X X External anal sphincter X X X X Urethral sphincter X X X X Coccygeus X X X Test Passive scap. Apprx T1-2 Abdominal reflex X X X X X X X X Beevor's Sign X X X X DTR: quadriceps X X Cremaster reflex Prone knee flexion X(?) X X X X X X Clitorolabial reflex X X X X Bulbocavernosus reflex X X X Straight leg raise X X X X DTR: achilles X X Q-tip X Pin-prick X Nerve branch: Superior glutea nerve X X X X Inferior gluteal nerve X X Lateral cutaneous branch of subcostal X Lateral cutaneous branch of femoral nerve X X Genitofemoral nerve X X Ilioinguinal nerve X Obturator nerve, cutaneous branch X X X Medial clunial nerve X X X Superior clunial nerve X X X