Nerves & Nervous System, Artery/Veins Structures Week 1

Question 1

Spinal Accessory Nerve (CN X1) Source:

Answer 1

Superior Spinal Cord

Question 2

Spinal Accessory Nerve Destination:

Answer 2

Travels through foramen magnum, goes out via jugular foramen into neck

Question 3

Spinal Accessory Nerve Innervation:

Answer 3

Trapezius, Sternocleidomastoid

Question 4

Is the Spinal Accessory Nerve motor or sensory

Answer 4

Motor Only

Question 5

What is the source of the spinal cord

Answer 5

Medulla of brain

Question 6

What is the destination of the spinal cord

Answer 6

Travels through the vertebral foramena, branches into dorsal and ventral nerve roots, caudal equina

Question 7

What is the name of the end of the spinal cord?

Answer 7

Conus Medullaris

Question 8

Cauda Equina source

Answer 8

Conus Medullaris

Question 9

Cauda Equina destination

Answer 9

forms spinal nerves below L2

Question 10

What does Cauda Equina innervate?

Answer 10

Muscles below the waist, sympathetic and parasympathetic to the pelvic viscera, skin and glands below groin

Question 11

Dorsal Root source:

Answer 11

Spinal nerve

Question 12

Dorsal Root Destination:

Answer 12

Posterior horn of the grey matter of the spinal cord

Question 13

What does the dorsal root ganglia contain?

Answer 13

contains cell bodies of sensory neurons for body below head (somatic & visceral)

Question 13

Dorsal Root innervates:

Answer 13

sensory (afferent neurons) below the head

Question 14

Ventral root source:

Answer 14

Anterior horn of grey matter of the spinal cord

Question 15

Ventral root destination:

Answer 15

Spinal nerve

Question 16

Ventral root innervation:

Answer 16

structures with motor innervations (afferent) below head

Question 17

Where are intervertebral disks?

Answer 17

Between bodies of adjacent vertebrae

Question 18

What are intervertebral disks made of?

Answer 18

Made of 2 parts: tough anulus fibrosus & softer nucleus pulposu

Question 19

Function of Intervertebral disks?

Answer 19

Cushions vertebral column

Question 20

Where do the vertebral arteries arise/drain from?

Answer 20

Subclavian Arteries

Question 21

Where do the vertebral arteries enter/drain into?

Answer 21

Basilar artery of brain

Question 21

What structures/areas do the vertebral arteries perfuse?

Answer 21

A major blood vessel of neck, cervical spinal cord, and brain

Question 22

Where do the “internal vertebral venous plexus” arise from/drain from?

Answer 22

Spinal cord, epidural space, vertebrae

Question 24

Where does the “internal vertebral venous plexus” enter/drain into?

Answer 24

Vertebral veins, segmental veins of trunk

Question 25

What is the significance of the internal vertebral plexus regarding pathology?

Answer 25

Route of cancer infection due lack of valves, drainage & associated lymphatics can propagate cancer metastasis

Question 26

Spinal Nerve Source:

Answer 26

Merging of dorsal and ventral roots

Question 27

Spinal Nerve Destination:

Answer 27

Branches into dorsal and ventral rami

Question 28

Spinal Nerve branches into:

Answer 28

Branches into dorsal and ventral rami

Question 29

Function of Denticulate ligament

Answer 29

Support spinal cord from dura/arachnoid. Holds dura and arachnoid together.

Question 30

Spinal nerve innervates:

Answer 30

Peripheral body behind and below the face (sensory and motor)

Question 31

Function of Filum terminale

Answer 31

Anchors spinal cord to coccyx

Question 32

Where is the Pia Mater?

Answer 32

Deepest very thin layer of connective tissue covering CNS (Brain and Spinal Cord)

Question 33

Dorsal Ramus source:

Answer 33

Spinal nerve

Question 34

Dorsal Ramus destination:

Answer 34

Nerves of posterior back

Question 35

Where is the Subarachnoid space and what does it contain

Answer 35

Space between arachnoid and pia containing cerebrospinal fluid (CSF)

Question 36

Dorsal ramus innervates:

Answer 36

Skin and deep muscles of the back

Question 37

Ventral ramus Source:

Answer 37

Spinal nerve

Question 38

Ventral ramus destination:

Answer 38

Nerves of body wall, limbs, organs

Question 39

Ventral ramus innervates:

Answer 39

Everything in the body below head except skin/deep muscles of back