Anatomy Of Spinal Cord

Question 1

The spinal cord i suspended in the

Answer 1

Vertebral canal

Question 2

The spinal cord is suspended in the vertebral canal & surrounded by

Answer 2

Meninges & CSF

Question 3

Spinal cord length in adults is

Answer 3

45 cm

Question 4

The spinal cord extends from the foramen magnum to (Adults)

Answer 4

L1 - L2

Question 5

The spinal cord extends from the foramen magnum to (children)

Answer 5

L3

Question 6

The spinal cord is continuous above with

Answer 6

Medulla oblongata

Question 7

The tapered inferior end of the spinal cord forms

Answer 7

Conus Medullaris

Question 8

non-neuronal cord that connects the conus medullaris to the coccyx

Answer 8

Filum Terminale

Question 9

The spinal cord gives rise to

Answer 9

31 pairs of spinal nerves

Question 10

Three connective tissue membranes surround spinal cord and brain

Answer 10

Dura mater
Arachnoid mater
Pia mater

Question 11

anchors spinal cord to coccyx .

Answer 11

filum terminale

Question 12

Forms the filum terminale

Answer 12

Spinal meninges

Question 13

tough outer layer, continuous with epineurium of the spinal nerves

Answer 13

Dura mater

Question 14

thin membrane deeper to dura mater

Answer 14

Arachnoid mater

Question 15

delicate membrane bound tightly to surface of brain and spinal cord.

Answer 15

Pia mater

Question 16

Which part of the spinal meninges Contains blood vessels, areolar connective tissue and fat.

Answer 16

Epidural

Question 17

Which part of the spinal meninges is a potential cavity between the dura and arachnoid mater, contains a small volume of serous fluid.

Answer 17

Subdural

Question 18

Which part of the spinal meninges contains CSF & blood vessels

Answer 18

Subarachnoid

Question 19

The spinal cord enlargements are

Answer 19

Cervical enlargement
Lumbosacral enlargement

Question 20

Which spinal cord enlargement supplies upper limbs

Answer 20

Cervical enlargement

Question 21

Which spinal cord enlargement supplies lower limbs

Answer 21

Lumbosacral enlargement

Question 22

The bundle of spinal nerves extending inferiorly from lumbosacral enlargement and conus medullaris surround the filum terminale and form

Answer 22

cauda equine

Question 23

The spinal cord is divided Anteriorly by

Answer 23

Median fissure

Question 24

The spinal cord is divided posteriorly by

Answer 24

Posterior median septum

Question 25

The central canal is lined by

Answer 25

ependyma

Question 26

The central canal is continuous with the

Answer 26

Ventricular system

Question 27

The central canal superiorly opens into

Answer 27

4th ventricle

Question 28

The central canal inferiorly expands into

Answer 28

Terminal ventricle

Question 29

A transverse bridge of grey matter connecting the anterior and posterior gray horns on each side

Answer 29

Grey commissure

Question 30

Grey commissure Is pierced by the

Answer 30

Central canal

Question 31

White Commissure Lies __ to the gray commissure

Answer 31

ventral

Question 32

contains decussating nerve fibers

Answer 32

White Commissure

Question 33

Grey matter Consists of

Answer 33

nerve cell bodies and their processes.

Question 34

three main categories of grey matter nerve cells

Answer 34

Sensory neurons Lower motor neurons Interneurons

Question 35

Which neurons are located in the Dorsal horns.

Answer 35

Sensory neurons

Question 36

Which neurons are located in the ventral horns

Answer 36

Lower motor neurons

Question 37

Which neurons form spinal reflex arc

Answer 37

Interneurons

Question 38

transmit impulses to the skeletal muscles

Answer 38

Lower motor neurons

Question 39

receive impulses from the periphery of the body

Answer 39

Sensory neurons

Question 40

Nerve cell groups

Answer 40

Substantia gelatinosa Nucleus proprius Nucleus dorsalis Visceral afferent nucleus

Question 41

Located at the apex of the posterior horn

Answer 41

Substantia Gelatinosa

Question 42

Extends throughout the length of spinal cord

Answer 42

Substantia Gelatinosa & Nucleus Proprius

Question 43

Located anterior to substantia gelatinosa

Answer 43

Nucleus Proprius

Question 44

Located at the base of dorsal horn

Answer 44

Nucleus Dorsalis

Question 45

Composed mostly of large neurons

Answer 45

Nucleus Dorsalis

Question 46

Nucleus Dorsalis Extends from ___ segments

Answer 46

C8 to L3-4

Question 47

Located lateral to nucleus dorsalis

Answer 47

Visceral Afferent Nucleus

Question 48

Composed mostly of medium size neurons

Answer 48

Visceral Afferent Nucleus

Question 49

Visceral Afferent Nucleus extends from ___ segments

Answer 49

T1 to L3

Question 50

The ventral horns contain:

Answer 50

Motor neurons Interneurons

Question 51

Motor neurons are organized in 3 groups

Answer 51

Medial Central Lateral

Question 52

Motor neurons that are present in most segments

Answer 52

Medial

Question 53

Smallest motor neurons

Answer 53

Central

Question 54

Motor neurons that are present in cervical and lumbosacral segments

Answer 54

Lateral & medial

Question 55

Innervate muscles of Neck and Trunk

Answer 55

Medial motor neurons

Question 56

innervates muscles of the Limbs

Answer 56

Lateral motor neurons

Question 57

White matter consists of mixture of

Answer 57

Nerve fibers Neuroglia Blood vessels

Question 58

White color is due to

Answer 58

high proportion of myelinated nerve fibers

Question 59

First pair of spinal nerves exit vertebral column between

Answer 59

skull and atlas

Question 60

four pair of spinal nerves exit via

Answer 60

sacral foramina

Question 61

Innervates Deep muscles of the trunk responsible for movements of the vertebral column

Answer 61

Dorsal rami

Question 62

Innervates Skin near the midline of the back.

Answer 62

Dorsal rami

Question 63

In the thoracic region form Intercostal nerves that innervate the intercostal muscles and the skin over the thorax

Answer 63

Ventral rami

Question 64

The spinal nerves are connected to sympathetic chain of ganglia by

Answer 64

communicating rami

Question 65

A reflex is a response brought by a

Answer 65

Sensory stimulus

Question 66

The neural pathway mediating the reflex actions is called

Answer 66

Reflex arc