Nervous System Intro

Question 1

Collection of nerve roots below the conus medullaris running down from the spinal cord. L2-S5

Answer 1

Cauda equina

Question 2

Termination of spinal cord at L2

Answer 2

Conus medullaris

Question 3

Threadlike, nonneural filament that runs from conus medullaris and attaches to coccyx

Answer 3

Filum terminale

Question 4

Interior rami spinal nerves join together forming a nerve network, except for the thoracic nerves

Answer 4

Peripheral nerve plexi

Question 5

Cervical plexus is made up of which spinal nerves and innervates which muscles

Answer 5

C1-C4. Neck muscles

Question 6

Brachial plexus is made up of which spinal nerves and innervates which muscles

Answer 6

C5 – T1. Upper extremities

Question 7

Lumbosacral plexus is made up of which spinal nerves and innervates which muscles

Answer 7

L1 – S5. Lower extremities

Question 8

12 pairs of spinal nerves. Nerves branch into interior and posterior ramus

Answer 8

Thoracic nerves

Question 9

Area of skin supplied with sensory fibers of a spinal nerve

Answer 9

Dermatomes

Question 10

Area of muscle supplied with motor fibers of a spinal nerve

Answer 10

Myotomes