Question 1
correctly label the following anatomical features of the spinal cord.
Question 2
correctly label the following anatomical features of the spinal cord.
Question 3
correctly label the following anatomical features of the spinal cord.
Answer to question 1
Step 1
The motor unit, which contains the motor nerve fiber and the muscle fibers, is the functional unit of muscular contraction. The neurons receive signals from the brain and send them to all of the muscle fibers in that motor unit. Motor units ensure that the force of muscular contraction is distributed uniformly throughout the muscle.
Step 2
The following diagram shows the labelled parts of a motor unit:
Answer to question 2
Answer to question 3
Labelled on the left side from top to bottom as 1,2,3 and on right side from top to bottom as 4,5,6,7
1. Posterior horn -it is the sensory horn
2. Gray commisure
3. Anterior median fissure
4. Posterior funiculus – it is the white matter of the spinal cord
5. Lateral funiculus
6. Spinal nerve
7. Posterior root of spinal nerve
Hope this helps… Thank you!!!