The 5th Cervical Vertebra w/ Spinal Cord & Origin of Nerves/ The ½ Nervous System

Spinal Cord: reflex, association, & communication area

1

Spinous Process

2

Vertebral Arch

3

Epidural Cavity

4

Dura Mater of Spinal Cord: outermost meninge, protects spinal cord

5

Posterior Horn: contains cell bodies involved w/ reflexes

6

Subdural Cavity

7

Posterior Funiculus: (white matter) transmits nerve impulses vertically along spinal cord

8

Posterior Median Sulcus: divides spinal cord into two posterior sections

9

Posterior Lateral Sulcus: area where the lateral/sensory portion of spinal nerves enter the spinal cord

10

White Matter: composed of myelinated axon tracts

11

Central Canal: filled w/ cerebrospinal fluid during life

12

Gray Commissure: links both parts of the spinal cord's gray matter

13

Gray Matter: contains motor & interneuron cell bodies

14

Lateral Funiculus: (white matter) transmits nerve impulses vertically along spinal cord

15

Anterior Lateral Sulcus: area where the anterior portion of spinal nerves leave the spinal cord

16

Anterior Funiculus: (white matter) transmits nerve impulses vertically along spinal cord

17

Anterior Fissure: divides spinal cord into two anterior sections

18

Arachnoid Mater: middle meninge, protects spinal cord

19

Subarachnoid Cavity

20

Anterior Horn: contains cell bodies involved w/ reflexes

21

Pia Mater: deepest meninge, protects spinal cord

22

Body of Vertebra

23

Transverse Process

24

Dorsal Root Ganglia: contains sensory cell bodies

A

Dorsal Ramus of Spinal Cord: innervates the skin of back

B

Spinal Nerve: formed by the fusion of dorsal & ventral roots

C

Ventral Ramus of Spinal Cord: innervates anterior body structures not found in the thorax/abdominal region

D

Rami Communicantes

E

Dorsal Root: sends sensory messages to spinal cord

F

Ventral Root: contains motor neuron axons

G

Vertebral Artery

H

Vertebral Vein

I

Sympathetic Trunk: innervates thoracic & abdominal body organs

J

Cervical Plexus

1

Cervical Nerves: ventral rami of C1-C5 to cervical plexus

2

Thoracic Nerves: ventral rami of T2-T12 to intercostal nerves

3

Thoracic Ganglia: serves abdominopelvic structures

4

#19) Supraclavicular Nerves

5

Brachial Plexus: controls arm

6

#15) Cervical Ganglia: sympathetic innervation to the eyes, skin, & salivary glands

7

Spinal Cord: reflex, association & communication area

8

Lumbar Nerves: ventral rami of L1-L4 to lumbar plexus

A

#32) Ilioinguinal Nerve: serves skin of external genitalia & medial thigh

B

#11) Sacral Nerves: ventral rami of S1-S4 to sacral plexus

C

Sacral Plexus

D

#35) Sciatic Nerve: splits into 2 nerves: tibial + common fibular

E

#13) Cauda Equina: innervates the lower limbs & lower abdomen

F

#12) Medullary Cone: tapered inferior end of spinal cord around L1-L2

G

#18) Sacral Ganglia: serves sacral splanchnic nerves

H

#34) Femoral Nerve: motor branch to anterior and upper thigh muscles

I

#40) Sacral Plexus

J

#33) Lateral Cutaneous Nerve of Thigh: serves skin of lateral thigh

K

Lumbar Plexus

L

Lumbar Ganglia: serves the lower plexuses & lumber splanchnic nerves

M

#19) Supraclavicular Nerves

1

#20) Axillary Nerve: muscular branches serve deltoid and teres minor

2

#21) Musculocutaneous Nerve: muscular branches serve anterior upper arm flexors

3

#24) Ulnar Nerve: intrinsic muscles of hand

4

#30) Dorsal Digital Nerves

5

#25) Superficial Branch of the Radial Nerve: branch of radial nerve

6

#28) Dorsal Branch of the Ulnar Nerve: branch of ulnar nerve

7

#20) Axillary Nerve: muscular branches serve deltoid and teres minor

A

#21) Musculocutaneous Nerve: muscular branches serve anterior upper arm flexors

B

#32) Ilioinguinal Nerve: serves skin of external genitalia and medial thigh

C

#25) Superficial Branch of the Radial Nerve: branch of radial nerve

D

#26) Palmar Branch of the Median Nerve: branch of median nerve

E

#31) Palmar Digital Nerves

F

#27) Palmar Branch of the Ulnar Nerve: branch of ulnar nerve

G

#33) Lateral Cutaneous Nerve of Thigh: serves skin of lateral thigh

H

#34) Femoral Nerve: motor branches to anterior and upper thigh muscles

I

#29) Posterior Cutaneous Nerve of the Arm: branch of radial nerve

J

#22) Radial Nerve: from brachial plexus: C5-T1

K

#24) Ulnar Nerve: intrinsic muscles of hand

L

#23) Median Nerve: muscular branches serve anterior forearm flexors

M

#43) Muscular Branch

1

#45) Sural Nerve: branch of tibial nerve

2

#39) Infrapatellar Branch of the Saphenous Nerve: branch of saphenous nerve

3

#40) Deep Peroneal Nerve: branch of common fibular nerve

4

#42) Dorsal Digital Nerves of the Foot

5

#41) Superficial Fibular Nerve: branch of common fibular nerve

6

#38) Saphenous Nerve: branch of femoral nerve

7

#38) Saphenous Nerve: branch of femoral nerve

8

#33) Lateral Cutaneous Nerve of Thigh:

serves skin of lateral thigh

A

#36) Obturator Nerve: motor branches to leg adductor muscles

B

#37) Common Fibular Nerve: lateral surface of leg and dorsum of foot

C

#38) Saphenous Nerve: branch of femoral nerve

D

#47) Medial Dorsal Cutaneous Nerve: branch of superficial fibular nerve

E

#46) Medial and Lateral Plantar Nerves: branch of tibial nerve

F

#41) Superficial Fibular Nerve: branch of common fibular nerve

G

#45) Sural Nerve: branch of tibial nerve

H

#44) Tibial Nerve: motor branches to posterior leg muscles

I

#35) Sciatic Nerve: splits into 2 nerves: tibial + fibular

J