Download Biology 2121 – Lecture Sheet – Spinal Nerves (Chapter 13) 1. All

Biology 2121 – Lecture Sheet – Spinal Nerves (Chapter 13)
1. All spinal nerves are classified as __________ nerves.
2. Only __________ rami form a plexus.
3. The ________ rami innervates the ____________ part of the body.
4. Describe what a plexus looks like, and why they are important.
5. The cervical plexus is formed by nerves _______________.
6. If the ______________ nerve is damaged it will affect the functioning of the diaphragm muscle.
7. The brachial plexus contains spinal nerves ______________.
8. The brachial plexus begins with the nerve roots and then divides into the following _______________
__________________
__________________,
____________________.
9. The ______________ nerve of this plexus serves the deltoid, the _______________ nerve serves the biceps brachii, and the
______________ nerve serves the flexor muscles of the forearm.
10. The lumbar plexus includes nerves ________________.
11. Why is it called the lumbosacral plexus?
12. Its proximal branches serve the ________________ and the _______________ muscle. Its major branches serve the ___________
and _________________.
13. This nerve of the lumbar plexus serves the quadriceps muscles of the thigh: ____________________
14. The _______________ nerve of the lumbar plexus supplies motor function to the adductor muscles of the leg.
15. The sacral plexus includes nerves ____________________.
16. The sciatic nerve is a combination of the ________________ and__________________ nerves. It is the ____________ and
_________________nerve in the body. It serves all of the ________________ limb.
17. Which sacral nerves serves the foot: _________________ and _______________.
18. The Pudendal nerve of this plexus serves: _______________________________________________________________
19. What are dermatomes?
20. All spinal nerves except for ________ innervate dermatomes.
21. Which spinal nerves do not form plexuses? _______________________
22. The __________________ nerves service the anterolateral thorax, most of the abdominal wall and the intercostals muscles.