Unit 3 FULL

The Brachial Plexus consists of spinal nerves from __.

C5-8+T1

The __ nerve innervates the extensor compartment of the arm.

(trcieaps, posterior forearm and hand)

Radial

The action of the Axillary nerve is to __ the arm.

abduct, flex, extend, laterally rotate

The Musculocutaneous nerve is responsible for flexing the ___, ____, and _____.

coracobracialis, biceaps brachi, and ½ of brachialis

The Ulnar nerve innervates the ____ , ____, and ____

Flexors, intrinsic hand muscles

The Femoral nerve originates from the __ Plexus.

Lumbosacral

The action associated with the Tibial nerve is to __ the leg.

flex

The Anterior compartment of thigh is innervated by the __ nerve.

Femoral

The __ nerve is responsible for adducting the thigh.

Obturator

The Posterior compartment of thigh and leg is innervated by the __ nerve.

Tibial

The Common fibular nerve is also known as __.

common peroneal

The Pudendal nerve is responsible for muscles of the __.

perineum

Breathing is a primary function of the __ nerve.

Phrenic

Intercostal nerves innervate __ muscles for breathing.

intercostal

The Autonomic Nervous System includes the __ trunk.

Sympathetic

Gray matter in the spinal cord is responsible for __ processing.

sensory

In the context of spinal nerves, the ventral root carries __ signals.

motor

The __ ramus carries both sensory and motor fibers.

Ventral/Dorsal

Specialized nerve endings in the skin help in the sensation of __.

pressure

The area of sensory innervation for the Common fibular nerve includes the __ foot.

dorsal

The primary action of the Tibial nerve is to __ the foot.

plantarflex

Pudendal nerve assists in __ of the pelvic floor.

support

The action of the Ulnar nerve includes moving the __ muscles.

hypothenar

Muscles responsible for erection are innervated by the __ nerve.

Pudendal

The main action of the Median nerve includes flexing the wrist and __.

digits

The __ is a structure highlighted in the study of autonomics in this laboratory.

Sympathetic trunk

Cervical plexus is nerves ____

C1-C4

The lumbar plexus is spinal nerves ____

L1-L4

the sarcal plexus is _____

L4-S4

Lumbosarcal

Combined (L1-S4)

The phrenic nerve is nerves ____

C3-C5

Muculocutaneous provides sensory info from…

lateral forearm

Ulnar sensory

Skin of medial hand, Digit 5, and medial side of digit 4

median nerve sensory

skin of lateral arm and palm, including digits 1-3 and half of digit 4.

axillary nerve sensory

shoulder joint+ deltoid

radial nerve sensory

skin over dorso-lateral arm, forearm, + hand

Femoral nerve sensory

skin of anterior thigh and medial leg

Obturator nerve sensory

skin of medial thigh

Siatic nerve split to be

tibial and common fibular nerves.

Pudendal nerve sensory

skin of perineum and external genitalia

tibial nerve sensory

skin of the posterior-lateral leg and sole of the foot

fibular nerve sensory

skin of the anterior and lateral leg, as well as the dorsum of the foot.

musculocutaneous nerve sensory

skin of the lateral forearm

the adductus mangnus is intervated by both the ____nerve and the ______ nerve

obturator nerve and tibial nerve

The biceps femoris are innervated by the _____ nerve and the ____ nerve .

fibular and Tibial

Carpal Tunnel involved the _____ nerve

median

Wrist drop involves the _____ nerve

radial

When you can not add/abbduct you fingers, the _____ is most likley damaged

ulnar

“funny bone”

Ulnar

The superior gluteal nerve (yellow) innervates…

Gluteus medius and minimus +thigh abduction

The inferior gluteal nerve (green) innervates…

gluteus maximus and thigh extension

Damage to the femoral nerve can cause…

walking problems, knee buckles

damage to the tibial nerve can cause

shuffling gait, difficulty w/ plantar flexing

damage to the fibular nerve can cause…

foot drop

I

Olfactory

II

Optic

III

Oculomotor

IV

Trochlear

V

Trigeminal

VI

Abducens

VII

Facial

VIII

Vestibulocochlear

IX

Glossopharyngeal

X

Vagus

XI

Spinal Accessory

XII

Hypoglossal

I sensory (oflactory)

Smell

II sensory (optic)

Vision

V sensory (trigeminal)

Sensory for face, mouth cavity, nasal cavity, and 2.3 of tongue (not taste)

VII sensory (facial)

anterior 2/3 of tongue

VIII sensory (vestibulocochlear)

hearing and equilibrium

IX sensory (glossopharyngeal)

general taste , posterior 1/3 of tongue

X sensory (vagus)

visceral, most thoracoabdominal viscera (automatic functions)

III motor (oculomotor)

moves eyes

IV motor (trochlear)

moves eye

V motor (trigeminal)

madible

VI motor (abducens)

eye movement

VII motor (facial)

somatic:facial expressions

visceral:salivary glands and lacrimal glands

IX motor (glossopharyngeal)

somatic:stylophar

X motor (vagus)

somatic: muscles of the pharynx and larynx

visceral: heart and digestive tract functions

XI motor (spinal accessory)

move trapezius and sternicomastoid

XII motor (hypoglossal)

move tongue

I origin (olfactory)

olfactory epithelium

II origin (optic)

retina

III origin (oculomotor)

midbrain

IV origin (trochlear)

midbrain

V origin (trigeminal)

Pons

VI origin (abducens)

pons

VII origin (facial)

pons

VIII origin (vestibulocochlear)

inner ear—> brain stem and pons

IX origin (glossopharyngeal)

medulla oblongata

X origin (vagus)

medulla oblongata

XI origin (spinal accessory)

rootlets at cervical spinal cord

XII origin (hypoglossal)

medulla oblongata

Dura mater

3

Arachnoid mater

2

Pia mater

1

Epidural/extradural space (around spinal cord only)

1-Filled with fat and veins

Subarachnoid space

space for CSF

Arachnoid granulations

between dura matter and subarachnoid space in skull