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| | eMedicine - Spinal Cord, Topographical and Functional Anatomy : Article by Francisco de Assis Aquino Gondim, MD, MSc, ... (Site not responding. Last check: 2007-08-20) |
 | | Posterior (ie, dorsal funiculi) columns convey 3 different types of sensation: (1) proprioception or position sense, for which the sensory receptors are the muscle spindles and Golgi tendon organs; (2) vibratory sense, for which the receptor is the Pacinian corpuscle; and (3) discriminative touch, for which the receptor is the Meissner corpuscle. |
 | | Urine is stored when the external urethral sphincter muscle (somatic) and the internal urethral sphincter muscle (sympathetic) are contracted and the detrusor muscle and sacral parasympathetic activity are inhibited through sympathetic mediation. |
 | | Parasympathetic pathways arising from the sacral spinal cord innervate the erectile tissue in the penis and clitoris; smooth muscle and glandular tissue in the prostate, urethra, seminal vesicles, vagina, and uterus; as well as blood vessels and secretory epithelia in various structures. |
| www.emedicine.com /neuro/topic657.htm (4555 words) |
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