Open QuestionBowel and urinary bladder control involve spinal reflex arcs that are located in the sacral region of the spinal cord. In both instances, two sphincter muscles—an inner sphincter of smooth muscle and an outer sphincter of skeletal muscle—control the passage of wastes (feces and urine) out of the body. How would a transection of the spinal cord at the L1 segment level affect an individual's bowel and bladder control?
Open QuestionWhat is the structural and functional relationship between spinal nerves, skeletal muscles, and dermatomes?
Multiple ChoiceWhich stage of a reflex arc would be significantly different in a reflex that is initiated by the brain compared to a reflex that is initiated by the spinal cord?
Multiple ChoiceWhich of the following reflexes is particularly important in maintaining balance and often accompanies the flexor reflex in weight-bearing limbs?