nervous system

Question 0

tract CNS or PNS, define

Answer 0

CNS, white matter collection of nerve fibers, contains nuclei

Question 1

Nucleus CNS or PNS? what is it?

Answer 1

CNS gray matter, collection of neural cell bodies

Question 2

Ganglion CNS or PNS? define?

Answer 2

PNS, collection of nerve bodies

Question 3

Peripheral Nerves CNS or PNS? define?

Answer 3

PNS, collection of nerve fibers, cranial nerves or spinal nerves

Question 4

Where does the spinal cord begin and end?

Answer 4

Medulla is where it begins, and it ends at the L1, L2 vetebrae

Question 5

which part of the spine has the greatest amount of white mater? gray mater?

Answer 5

Cervical has the most white mater, Lumbar has the most gray mater

Question 6

3 layers of Menings? which is the most superficial?

Answer 6

Dural, Arachnoid, Pia

Dural is the most superficial, Pia is the most deep

Question 7

What forms the Filum Terminale?

Answer 7

The Pia mater

Question 8

dentricular ligaments

Answer 8

sheets of pia mater which serves a few functions:
it separates the ventral and dorsal roots
attaches the spinal cord to the dural sac

Question 9

what are the 3 connective tissue coverings?

Answer 9

Epineurium, Perineurium, Endouriurm

Question 10

what does the Epineurium cover?

Answer 10

bundles of muscle fascicles

Question 11

What does perineurium cover?

Answer 11

covers a single fascicle

Question 12

what does the endoneurium cover?

Answer 12

covers a single nerve cell

Question 13

where is the cervical enlargement?

Answer 13

C3 to T1

Question 14

Where is the lumbar enlargement?

Answer 14

L1 to S2

Question 15

where do you find of the Brachial Plexus?

Answer 15

Anterior rami of C5 to C8 and T1

Question 16

SCM Superior attachment

Answer 16

Lateral surface of mastoid process of temporal bone and lateral half of superior nuchal line.

Question 17

SCM Inferior attachment

Answer 17

Sternal head: Anterior surface of manubrium of sternum

Clavicular head: Superior surface of medial third of clavicle

Question 18

SCM innervation

Answer 18

Spinal accessory nerve (CN XI), C2, C3 nerves

Question 19

SCM actions?

Answer 19

Unilateral: tilts head to same side and rotates it so face is turned superiorly toward opposite side

Bilateral: Extends neck at the atlanto occipital joint, flexes cervical vertebrae so that chin approaches the manubrium, extends superior cervical vertebrae while flexing inferior vertebrae so chin is thrust forward with head kept level.

With the cervical vertebrae fixed may elevate manubrium and medial end of clavicles, assisting pump-handle action of deep respiration.

Question 20

Scalene Anterior origin

Answer 20

Anterior turbercles of transvers processes C3-C6

Question 21

Scalene anterior insertion

Answer 21

first rib

Question 22

Scalene anterior innervation

Answer 22

ventral ramus of C4 to C6

Question 23

Scalene anterior action

Answer 23

When the neck is fixed, elevates the first rib to aid in breathing or when the rib is fixed, flexes neck laterally

Question 24

Scalene medius origin and insertion?

Answer 24

origin: posterior tubercles of transverse processes C4 to C7, insertion: Superior surface of First rib, posterior groove for subclavian artery

Question 25

Scalene Middle innveration?

Answer 25

ventral rami of C1 to C8 of the cervical nerves

Question 26

Scalene medius action

Answer 26

Elevate 1st rib during forced inspiration, Flexes neck laterally

Question 27

Scalene posterior origins

Answer 27

posterior turbercles of Transverse process of C4 to C6

Question 28

Scalene posterior insertion?

Answer 28

External boarder of 2nd rib

Question 29

Posterior scalene innveration

Answer 29

Anterior rami of cervical spinal nerves C7 to C8

Question 30

Posterior scalene actions

Answer 30

Flexs neck laterally, elevates 2nd rib during forced inspiration

Question 31

Where is the lumbroscaral plexus?

Answer 31

L1-S5

Question 32

What is the Lumbar Cistern?

Answer 32

and enlargement in the subarachnoid space to accommodate the the Cauda Equina

Question 33

What is a dermatome?

Answer 33

Area of skin innervated by a single spinal nerve

Question 34

what is a Myotome?

Answer 34

Muscle receiving a single innervation from spinal nerve