Spinal Cord & Spinal Nerves

Question 1

End of spinal cord

Answer 1

Conus medullaris
Cuada equina
Filum terminale

Question 2

White matte funiculi

Answer 2

Posterior funiculi
Anterior funiculi
Lateral funiculi

Question 3

Extensions of gray matter

Answer 3

Dorsal Posterior horns
Ventral Anterior horns
Lateral horns

Question 4

Spinal never splits into roots

Answer 4

Dorsal root - sensory fibers

Ventral root - motor fibers

Question 5

Spinal never splits into rami

Answer 5

Dorsal Ramus - to&from dorsal of body

Ventral Ramus - to and from ventral of body

Question 6

Sympathetic trunk

Answer 6

To internal organs of body

With enlargements = sympathetic ganglia

Question 7

Nerve plexus

Answer 7

Branching and interlacing nerve networks from ventral rami

- cervical, brachial, lumbar and sacral

Question 8

Cervical plexus

Answer 8

Phrenic goes to diaphragm

Question 9

Brachial plexus

Answer 9

Axilllary armpit and shoulder

Musculocutaneous nerve upper arm and biceps

Question 10

Axillary nerve

Answer 10

Goes under armpit out to deltoid muscle

Question 11

Miacolocutaneous nerve

Answer 11

Goes to anterior arm and innervates biceps

Question 12

Lumbar plexus

Answer 12

Femoral nerve in right leg on femur

Innervates anterior quadriceps

Question 13

Sacral plexus

Answer 13

Sciatic nerve thick and longest
Entire lower limb
Branches of to gluteal nerves

Question 14

Reflex

Answer 14

Rapid predictable motor response to stimulus

Question 15

5 components of reflex

Answer 15

Receptor 
Sensory neuron 
Integration center (interneuron/association neuron) 
Motor neuron 
Effector  (muscle)

Question 16

Somatic reflex

Answer 16

Activated skeletal muscle

Salivary reflex

Question 17

Visceral (somatic) reflex

Pupillary reflex

Answer 17

Involves smooth & cardiac muscle

Question 18

Spinal nerves

Answer 18

Cervical 8
Thoracic 12
Lumbar 5
Sacral 5
Coccygeal 1