Week 0 Muscles Flashcards
Pectoralis Major action
Flexion, medial rotation and horizontal adduction of shoulder.
Scapular Protraction and Depression
Pectoralis Major Innervation
Lateral pectoral
Pectoralis Minor action
Downward Rotation of scapula, Scapular Protraction and Depression
Pectoralis Minor innervation
Medial Pectoral
Serratus Anterior Action
Upward Rotation of scapula,
Scapular Protraction and Depression
Serratus Anterior Innervation
Long thoracic
Trapezius Action
Upper fibers- Scapula elevation,
Middle fibers- Scapula Retraction
Lower fibers- Scapula Depression
Upper and lower fibers-Upward
rotation of scapula
Trapezius Innervation
Cranial nerve XI (spinal accessory nerve)
Rhomboid Major and Minor Action
Adduction, elevation and downward rotation of scapula
Rhomboid Major and Minor Innervation
Dorsal scapular
Levator Sccapulae Action
Scapular Elevation and Downward
Rotation
Levator Scapulae Innervation
Ventral rami of spinal
nerves (C3-C4) and the
dorsal scapular nerve
Sternocleidomastoid Action
U/L: Same side flexion & opposed side rotation of neck
Sternocleidomastoid Innervation
Spinal Accessory Nerve (CN XI)
Latissimus Dorsi Action
Medial rotation, adduction and
extension of shoulder joint
Latissimus Dorsi Innervation
Thoracodorsal
Deltoid Action
Abduction at shoulder
Anterior fibers: flex the shoulder
Posterior fibers: extend the shoulder
Deltoid Innervation
Axillary
Teres Major Action
Shoulder medial rotation, extension,
adduction
Teres Major Innervation
Lower subscapular
Coracobrachialis Action
Flexion of arm
Coracobrachialis Innervation
Musculocutaneous
Subscapularis Action
Medially rotate shoulder, adduct at shoulder
Subscapularis Innervation
Upper and Lower Subscapular nerves
Supraspinatus
Shoulder abduction up to 15 degrees
Supraspinatus innervation
Suprascapular
Infraspinatus Action
Lateral rotation at shoulder
Infraspinatus inneravtion
Suprascapular
Teres Minor Action
Lateral rotation at shoulder
Teres Minor Innervation
Axiallary
Long head of Biceps
Flexion of elbow, supination of
forearm, flexion of shoulder
Long head of Biceps Innervation
Musculocutaneous
Short head of Biceps Action
Flexion of elbow, supination of
forearm, flexion of shoulder
Short head of Biceps Innervation
Musculocutaneous
Brachialis Action
Flex elbow
Brachialis innervation
Musculocutaneous
Lateral Head of Triceps Action
Extend elbow and shoulder
Lateral Head of Triceps Innervation
Radial
Long Head of Triceps Action
Extend elbow and shoulder
Long head of Triceps innervation
Radial
Medial Head of Triceps Action
Extend elbow and shoulder
Medial Head of Triceps innervation
Radial
Brachioradialis Action
Elbow Flexion especially
in mid-prone position
Brachioradialis Innervation
Radial
Anconeus Action
Weak elbow extensor
Anconeus Innervation
Radial
Extensor Carpi Radialis
Longus and Brevis Action
Wrist extension and Radial deviation
Extensor Carpi Radialis
Longus and Brevis Innervation
Radial
Extensor Digitorum Action
Extends the MCP joints, extends the
IP joints of the second through fifth
digits
Extensor Digitorum Innervation
Radial
Extensor Digiti Minimi Action
Extends the MCP joints, extends the
IP joints of the little finger
Extensor Digiti Minimi Innervation
Radial
Extensor Carpi Ulnaris Action
Extension of wrist and ulnar deviation
Extensor Carpi Ulnaris Innervation
Radial
Abductor Policis Longus Action
1st digit ABD and extension at CMC joint
Abductor Policis Longus innervation
Radial
Extensor Policis Brevis Action
1st digit extension at MCP, IP joints
Extensor Policis Brevis Innervation
Radial
Extensor Policis Longus Action
1st digit extension at MCP, IP joints
Extensor Policis Longus Innervation
Radial
Extensor Indicis Action
2nd digit extension and wrist extension
Extensor Indicis Nerve
Radial
Supinator Action
Supination of forearm
Supinator Innervation
Radial
Pronator Teres Action
Pronation of forearm, elbow flexion
Pronator Teres Innervation
Median
Flexor Carpi Radialis Action
wrist flexion, radial deviation
Flexor Carpi Radialis Innervation
Median
Palmaris Longus Action
Flexion of wrist
Palmaris Longus Innervation
Median
Flexor Carpi Ulnaris Action
Wrist flexion, Ulnar deviation
Flexor Carpi Ulnaris Innervation
ulnar
Flexor Digitorium Superficialis Action
Flexion of PIP joint of fingers
Flexor Digitorium Superficialis Innervation
Median
Flexor Pollicis Longus Action
Flexion of distal phalanx of thumb
Flexor Pollicis Longus Innervation
Median
Flexor digitorium Profundus Action
Flex wrist, flex all joints to DIP in digits 2-5
Flexor Digitorum Profundus Innervation
Medial half: ulnar nerve
Lateral half: median
nerve
Pronator Quadratus Action
Pronates Forearm
Pronator Quadratus Innervation
Median
Abductor Policis Brevis Action
Abduction of thumb at MCP, CMC joint
Abductor Policis Brevis Innervation
Median
Flexor Policis Brevis Action
Flexion of thumb
Flexor Policis Brevis Innervation
Median
Opponens Pollicis Action
Opposition of thumb
Opponens Policis Innervation
Median
Adductor Policis Action
Adduction of thumb
Adductor Policis Innervation
Ulnar
Abductor Digiti Minimi Action
abduction of the little finger at MCP joint
Abductor Digiti Minimi Innervation
Ulnar
Opponens Digiti Minimi Action
Flexion of 5th metacarpal, lateral rotation producing opposition
Opponens Digiti Minimi Innervation
Ulnaris
Lumbricals of the hand Action
Flexion at MCP, Extension at IP
Lumbricals of the Hand Innervation
Medial two: ulnar nerve
Lateral two: median
nerve
Dorsal Interossei Action
Abduction of 2nd, 3rd, 4th digits away from middle finger
Dorsal Interossei Innervation
Ulnar
Palmar Interossei
Adduction of 2nd, 4th, 5th digits toward middle finger, flexion of digits at MCO, extension at IP
Palmar Interossei Innervation
Ulnar
External Intercostals Action
Elevate ribs during inspiration
External Intercostals Innervation
Intercostal nerves
Internal Intercostals Action
Draw ribs downward during forced expiration
Internal Intercostals Innervation
Intercostal nerves
Transversus Thoracis Action
Depresses the ribs
Tranversus Thoracis Innervation
Intercostal nerves
Quadratus Lumborum Action
extension and side flexion of lumbar spine, expiration
Quadratus Lumborum Innervation
Ventral ramus of spinal nerve roots T12-L3
Psoas Major Action
forward flexion and side flexion of lumbar spine, flexion of the hip joint a
Psoas Major Innervation
Branches of ventral rami L1-L3
Illiacus Action
Flexion of hip joint
Iliacus Innervation
Femoral Nerve
Rectus Abdominis Action
Expiration, flexion of the spine
Rectus Abdominis Innervation
Lower six or seven thoracic nerves `
External Oblique Action
Bilaterally: flexion of the trunk and
posterior tilt of the pelvis
Unilaterally: lateral flexion and
contralateral rotation of the trunk
External Oblique Innervation
Lower six thoracic nerves
Internal Oblique Action
Unilaterally: lateral flexion and
ipsilateral rotation of the trunk
Bilaterally: flexion of the trunk and
posterior tilt of the pelvis
Internal Oblique Innervation
Lower six thoracic nerves and the first lumbar nerves
Transversus Abdominis Action
Bilaterally: stabilization of attachment
sites for other abdominal muscles;
compression of the abdominal cavity
Transverus Abdominis Innervation
lower six thoracic nerves and the first lumbar nerve
Rectus Femoris Action
Extends knee and flexes hip
Rectus Femoris Innervation
Femoral
Vastus Lateralis Action
Extends knee
Vastus Lateralis Innervation
Femoral
Vastus Medialis Innervation
Femoral
Vastus Intermedius Action
extends knee
Vastus Intermedius Innervation
Femoral
Sartorius Action
Hip flexion, abduction, lateral rotation, knee flexion
Sartorius Innervation
Femoral
Pectineus Action
Hip flexion, adduction, medial rotation
Pectineus Innervation
Femoral
Adductor Longus Action
Hip adduction, flexion, medial rotation
Adductor Longus Innervation
Obturator
Adductor Brevis Action
Hip adduction, flexion, medial rotation
Adductor Brevis Innervation
Obturator
Adductor Magnus Action
Hip adduction, extension, medial rotation
Adductor Magnus Innervation
Obturator and tibial portion of sciatic nerve
Gracilis Action
Hip flexion, medial rotation, adduction and flexion of knee
Gracilis Innervation
Obturator
Gluteus Maximus Action
Hip extension & external rotation
Secondary action: hip adduction
Gluteus Maximus Innnervation
Inferior Gluteal
Gluteus Medius and gluteus minimus Action
Abduction of hip
Assist in medial and lateral rotation
of hip
Gluteus Medius and Gluteus Minimus Innervation
Superior gluteal
Tensor Fasciae Latae Action
Flex, abduct, medially rotate hip
Tensor Fascia Latae Innervation
Superior Gluteal
Piriformis Actions
Lateral rotators of hip
Piriformis Innervation
Nerve to the piriformis
Biceps Femoris Action
Flex knee, extend hip
Bicep Femoris Innervation
Sciatic
Semimembranosus Action
Flex knee, extend hip
Semimembranosus Innervation
Sciatic
Semitendinosus Action
Flex knee, extend hip
Semitendinosus Innervation
Sciatic
Tibialis Anterior Action
Dorsiflexion, inversion
Tibialis Anterior Innervation
Deep Peroneal
Extensor Digitorum Longus Action
Toe extension, ankle dorsiflexion, eversion
Extensor Digitorum Longus Innervation
Deep peroneal
Extensor Hallucis Longus Action
1st toe extension, ankle dorsiflexion, inversion
Extensor Hallucis Longus Innervation
Deep peroneal
Peroneus Tertius Action
Ankle dorsiflexion, eversion
Peroneus Tertius Innervation
Deep peroneal
Peroneus Longus Actions
Plantarflexion, eversion
Peroneus Longus Innervation
Superficial Peroneal
Peroneus Brevis Action
Plantarflexion, eversion
Peroneus Brevis Innervation
Superficial peroneal
Gastrocnemius Action
Plantar flexion, knee flexion
Gastrocnemius Innervation
Tibial
Soleus Action
Plantar flexion
Soleus Innervation
Tibial
Plantaris Action
Slight knee flexion, plantarflexion
Plantaris Innervation
Tibial
Popliteus Action
Knee flexion and internal rotation
Popliteus Innervation
Tibial
Flexor Digitorum Longus Action
2-5 toes flexion, plantar flexion, inversion
Flexor Digitorum Longus Innervation
Tibial
Flexor Hallucis Longus Action
Flexion of Great, Plantarflexion, Inversion
Flexor Hallucis Longus Innervation
Tibial
Tibialis Posterior Action
Plantarflexion, inversion
Tibialis Posterior Innervation
Tibial
