Spinal Nerves

Question 1

Name the 5 spinal nerves and how many from CNS to PNS

Answer 1

Cervical: 8
Thoracic: 12
Lumbar: 5
Sacral: 5
Coccygeal: 1

(Breakfast at 8, lunch at 12, dinner and dessert at 5, and late night snack at 1)

Question 2

Where do nerves exit in the vertebral column?

Answer 2

Intervertebral foramen

Question 3

Dorsal (posterior) root : __________ (_________)

Answer 3

Afferent (sensory)

Question 4

Ventral (anterior) root : __________ (_________)

Answer 4

Efferent (motor)
*a “motor” has more “effect” in the “anterior”/front of the car

Question 5

T/F: Rami contain only motor nerves

Answer 5

False; rami contain BOTH motor and sensory nerves

Question 6

Dorsal rami supply the _______

Answer 6

Back

Question 7

Ventral rami supply (2)

Answer 7

The limbs and anterolateral trunk

Question 8

Only ________ rami enter into formation of nerve ________

Answer 8

Ventral; plexi

Question 9

Draw the Spinal Nerve Formation

Answer 9

Spinal cord
Dorsal rootlets / ventral rootlets
Dorsal root w/ dorsal root ganglion / ventral root
Spinal nerve
Dorsal rami / ventral rami