Kines Units 4& 5

Spinal cord segment for axillary nerve

C5-C6

Spinal cord segment for musculosutaneous nerve

C5-C6

Spinal cord segment for radial nerve

C6-T1

Spinal cord segment for median nerve

C6-T1

Spinal cord segment for ulnar nerve

C8-T1

Muscle innervation for axillary nerve

Shoulder muscles

Muscle innervation for musculocutaneous nerve

Elbow flexors

Muscle innervation for radial nerve

-Elbow extensors

-Wrist extensors

-Finger extensors

-Supinators

Muscle innervation for median nerve

-Wrist flexors

-Finger flexors

-Most of thumb

-Pronators

Muscle innervation for ulnar nerve

-Wrist flexors

-Some muscles in hand (intrinsics)

Sensory distribution for axillary nerve

Lateral upper arm

Sensory distribution for musculocutaneous nerve

Anterolateral forearm

Sensory distribution for radial nerve

Posterior arm

Sensory distribution for median nerve

-Anterior thumb

-Index finger

-Middle finger

-1/2 of ring finger

Sensory distribution for ulnar nerve

-Other 1/2 of ring finger

-Pinky finger

Spinal cord segment for femoral nerve

L2-L4

Spinal cord segment for obturator nerve

L2-L4

Spinal cord segment for sciatic nerve

L4-S3

Spinal cord segment for tibial nerve

L4-S3

Spinal cord segment for common peroneal nerve

L4-S2

Muscle innervation for femoral nerve

-Hip flexors

-Knee extensors

Muscle innervation for obturator nerve

Hip adductors

Muscle innervation for sciatic nerve

-Hip extensors

-Knee flexors

Muscle innervation for tibial nerve

-Plantar flexors

-Inversion

-Foot intrinsic muscles

Muscle innervation for common peroneal nerve

-Dorsi flexors

-Eversion

-Toe Extensors

Sensory distribution for femoral nerve

Anterior and medial thigh

Sensory distribution for obturator nerve

Medial thigh

Sensory distribution for sciatic nerve

none

Sensory distribution for tibial nerve

-Posterolateral leg

-Lateral foot

Sensory distribution for common peroneal nerve

Anterolateral leg and foot

Origin (PA) of iliopsoas

-Iliacus: iliac fossa

-Psoas: T12-L5

Insertion (DA) of iliopsoas

Lesser trochanter

Action of iliopsoas

-Hip flexion

-Anterior pelvic tilt

-Flexion of the trunk

Nerve of iliopsoas

-Iliacus: femoral

-Psoas: L2-L3

Origin (PA) of rectus femoris

AIIS

Insertion (DA) of rectus femoris

Tibial tuberosity

Action of rectus femoris

-Hip flexion

-Knee extension

Nerve of rectus femoris

Femoral

What is the most powerful hip flexor muscle?

Iliopsoas

What is the longest muscle in the body?

Sartorius

Origin (PA) of sartorius

ASIS

Insertion (DA) of sartorius

Proximal medial aspect of the tibia (pes anserine)

Action of sartorius

-Hip flexion, abduction, and external rotation

-Knee flex and internal rotation

Nerve of sartorius

Femoral

Origin (PA) of tensor fascia latae

Iliac crest

Insertion of tensor fascia latae

Posterior 1/3 of IT band

Action of tensor fascia latae

Hip flexion, abduction, internal rotation

Nerve of tensor fascia latae

Superior gluteal

Origin (PA) of gluteus maximus

Posterior sacrum and ilium

Insertion (DA) of gluteus maximus

Gluteal tuberosity and IT band

Action of gluteus maximus

-Hip extension and external rotation

-Posterior pelvic tilt

-Trunk extension

*Extends the knee (only when foot is planted on the ground)

Nerve of gluteus maximus

Inferior gluteal nerve

Origin (PA) of semitedinosus

Medial side of ischial tuberosity

Insertion (DA) of semitendinosus

Anteromedial proximal tibia (pes anserine)

Action of semitendinosus

-Hip extension

-Knee flexion

-Posterior pelvic tilt

Nerve of semitendinosus

Sciatic

Origin (PA) of biceps femoris

-Long head: ischial tuberosity

-Short head: lateral lip of linea aspera

Insertion (DA) of biceps femoris

Head of fibula

Action of biceps femoris

-Long head: hip extension, knee flexion, posterior pelvic tilt

-Short head: knee flexion

Nerve of biceps femoris

-Long head: sciatic

-Short head: common peroneal

Origin (PA) of semimembranosus

Ischial tuberosity

Insertion (DA) of semimembranosus

Posterior medial condyle of tibia

Action of semimembranosus

-Hip extension

-Knee flexion

-Posterior pelvic tilt

Origin (PA) of gluteus medius

Lateral ilium

Insertion (DA) of gluteus medius

Greater trochanter

Action of gluteus medius

Hip abduction

Origin (PA) of gluteus minimus

Lateral ilium, inferior to gluteus medius

Insertion (DA) of gluteus minimus

Greater trochanter

Action of gluteus minimus

Hip abduction and internal rotation

Nerve of gluteus minimus

Superior gluteal

Origin (PA) of pectineus

Pectineal line of superior ramus of pubis

Insertion (DA) of pectineus

Pectineal line of posterior surface of the femur

Action of pectineus

Hip flexion and adduction

Nerve of pectineus

Femoral

Origin (PA) of adductor longus

Pubis

Insertion (DA) of adductor longus

Middle 1/3 of linea aspera

Action of adductor longus

Hip adduction and flexion

Nerve of adductor longus

Obturator

Origin (PA) of gracilis

Pubis

Insertion (DA) of gracilis

Anterior medial surface of proximal tibia (pes anserine)

Action of gracilis

-Hip adduction and flexion

-Knee flexion and internal rotation

Nerve of gracilis

Obturator

Origin (PA) of adductor brevis

Pubis

Insertion (DA) of adductor brevis

Pectineal line and proximal linea aspera

Action of adductor brevis

Hip adduction and flexion

Nerve of adductor brevis

Obturator

Origin (PA) of adductor magnus

Ischium

Insertion (DA) of adductor magnus

Linea aspera and adductor tubercle

Action of adductor magnus

Hip adduction

Nerve of adductor magnus

Obturator

Origin (PA) of piriformis

Anterior side of sacrum

Insertion of piriformis

Through sciatic notch to greater trochanter

Action of piriformis

External rotation of hip

Nerve of piriformis

Sciatic nerve can sometimes so through

Parts of a neuron

-Cell body

-Dendrite

-Axon

What does a dendrite do?

Brings impulses to the cell

What does an axon do?

Takes away the impulses

What is myelin sheath

Fatty tissue that surrounds the axon

What is a node of ranvier?

Breaks in the myelin that speed up the impulse by skipping over myelin

What is a synapse

Gap between neurons where the impulse is transmitted from one neuron to another from axon to dendrite