Question

A patient arrives in the ER with a single stab wound to the back. When he awakes: a. You ask him to close his eyes, then you bend both legs at the knee and hip. He cannot feel the position of the right leg. You prick his lower extremities with a small pin. He cannot feel pain in his left hip or leg. b. You ask him if he can wiggle his toes, or move his ankle and knee. He cannot perform these actions with his right leg. c. 1. Which tract is responsible for symptom A? a. Is it sensory or motor, ascending or descending, what are its functions? b. Where does it cross the spinal cord? wnen Recicne tvu c. Draw a stick figure with both sides of the tract in different colors. d. Put a large dark circle at the approximate location of the injury. Level? R or L? 2. Which tract is responsible for symptom B a. Is it sensory or motor, ascending or descending, what are its functions? b. Where does it cross the spinal cord? c. Draw a stick figure with both sides of the tract in different colors. d. Put a large dark circle at the approximate location of the injury. Level? R or L? 3. Which tract is responsible for symptom C? Is it sensory or motor, ascending or descending, what are its functions? b. Where does it cross the spinal cord? c. Draw a stick figure with both sides of the tract in different colors. d. Put a large dark circle at the approximate location of the injury. Level? R or L? a.

Answer 1

1, a, sensory nerve information transmitted through the spinothalamic track..it is responsible for pain, and temperature..Ascending tracks are sensory neurones deliver information to the brain..

B, sensory modality: fine touch sensation carried in sensory track

Somatotopic: Ascending tracks are arranged as per site

Medial - lateral rule: sensory neurones enter a low level of spinal cord and more medial with in the spinal cord and enter at a higher level of the spinal cord and more lateral with the spinal cord..

C,