Chapter 16 Part 1

Question 1

Meninges- ;superficial and ends at s2

Answer 1

Dura mater

Question 2

-middle layer -Avascular -subarachnoid space contains CSF (cerobrospinal fluid)

Answer 2

Arachnoid

Question 3

Deepest and forms denticulate ligaments triangular shaped extensions that laterally anchor cord

Answer 3

Pig mater

Question 4

In ___ spinal cord ends at superior border of L2(external spinal cord anatomy)

Answer 4

Adults

Question 5

(Enlargements) ;nerves to upper limbs

Answer 5

Cervical

Question 6

(Enlargements) ;nerves to lower limbs

Answer 6

Lumbar

Question 7

Cone shaped end of spinal cord

Answer 7

Conus medullaris

Question 8

Spinal nerves extending from end of cord like a horses tail

Answer 8

Cauda equina

Question 9

Pig Mater extension that anchors spinal cord to coccyx

Answer 9

Filum terminale

Question 10

(Internal spinal cord anatomy) ; shaped like letter H surrounded by white matter

Answer 10

Gray matter

Question 11

Mainly contains cel bodies and unmyelinated neurons -subdivided into 3 horns

Answer 11

Gray matter

Question 12

Groups of cell bodies in CNS

Answer 12

Nuclei

Question 13

Contains sensory axons and nuclei

Answer 13

Posterior horn

Question 14

Contains somatic motor nuclei ;controlled Skelton muscles

Answer 14

Anterior horn

Question 15

Contains autonomic motor nuclei; controls glands, smooth and cardiac muscle

Answer 15

Lateral horn

Question 16

Contains myelinated neurons

Answer 16

White matter

Question 17

Subdivided into 3 columns

Answer 17

Anterior,posterior and lateral

Question 18

Buddles of neurons located in white matter of CNS

Answer 18

Tracts

Question 19

Conduct impulses to brain

Answer 19

Sensory (ascending) tracts

Question 20

Conduct impulses from brain

Answer 20

Motor (descending) tracts

Question 21

31 pairs in PNS are mixed (sensory and motor) nerves

Answer 21

Spinal nerves

Question 22

(C1-c8)

Answer 22

Cervical

Question 23

(T1-t12)

Answer 23

Thoracic

Question 24

(L1-l5)

Answer 24

Lumbar

Question 25

S1-s5

Answer 25

Sacral

Question 26

Co1

Answer 26

Coccygeal

Question 27

Connect spinal cord to nerves

Answer 27

Roots

Question 28

2 types of roots

Answer 28

Posterior (dorsal) root & anterior (ventral) root

Question 29

Contains sensory neurons to CNS ; controls sensations

Answer 29

Posterior (dorsal) root

Question 30

Contains motor neurons from CNS,controls movement

Answer 30

Anterior (central root

Question 31

(Spinal nerve coverings) ;outermost layer surrounding the entire nerve

Answer 31

Epineurium

Question 32

(Spinal nerve coverings) ; middle layer surrounding axon Buddles fascicles

Answer 32

Perineum

Question 33

Protective structures include vertebral column and meninges

Answer 33

Spinal cord

Question 34

(Spinal never coverings) ; intermost layer surrounding individual axon

Answer 34

Endoneurim

Question 35

Spinal nerve branches (extensions)

Answer 35

Rami

Question 36

Supplies dorsal trunk

Answer 36

Posterior (dorsal ) Remus

Question 37

Supplies lateral and ventral tuck

Answer 37

Anterior ventral Ramus