Download 7 Human Muscle OIA Flashcards

OIA Flashcards
N
Pectoralis major
O
clavicle, sternum, costal cartilages
I
Intertubercular groove of humerus
A
Flexes, adducts and medially rotates arm
N
O
I
A
Pectoralis minor
ribs 3,4,5
coracoid process of scapula
protraction and depression of scapula
N
O
I
A
N
O
I
A
Deltoid
clavicle, acromion and scapular spine
deltoid tuberosity
Abducts arm
Biceps brachii
coracoid process, supraglenoid tubercle
radial tuberosity
Flexes elbow, supinates forearm
N
O
I
A
N
O
I
A
Brachialis
distal anterior humerus
coronoid process of ulna
Flexes forearm
Coracobrachialis
coracoid process of scapula
Shaft of humerus
Flexes and adducts shoulder
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OIA Flashcards
N
O
I
A
Brachioradialis
lateral supracondylar ridge
styloid process of radius
Flexes forearm
N
O
I
A
Pronator Teres
medial epicondyle of humerus
lateral radius
Pronates and flexes forearm
N
Extensor carpi radialis
O
I
A
lateral epicondyle and supracondylar
ridge of humerus
Base of 2nd and 3rd metacarpal
Extends and abducts wrist
N
O
I
A
Extensor carpi ulnaris
lateral epicondyle of humerus
5th metacarpal
Extends and adducts wrist
N
O
I
Extensor digitorum
lateral epicondyle of the humerus
posterior surfaces of distal phalanges
of digits 2-5
Extends wrist and finger, abducts
fingers
A
`N
Extensor pollicis longus
A
extends thumb
N
A
Extensor pollicis brevis
N
A
Abductor pollicis longus
extends thumb
extends and abducts thumb
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OIA Flashcards
N
O
I
A
N
O
N
O
I
A
Infraspinatus
infraspinous fossa
greater tubercle of the humerus
Lateral rotation of humerus
Teres Major
Posterior surface of inferior angle of
scapula
I
intertubercular groove of humerus
A
extends, adducts and medially
rotates arm
Teres Minor
lateral border of scapula
greater tubercle of humerus
Lateral rotation of arm
N
Trapezius
O
N
Occipital bone,
spines of C7 and all Thoracic vertebrae
spine and acromion of scapula,
lateral clavicle
rotates, elevates, and retracts scapula;
secondary action: extends head
Latissimus dorsi
lower 6 thoracic vertebrae, lumbar vertebrae, iliac crest
intertubercular groove of humerus
Extends, adducts and medially
rotates arm
Rhomboids (major and minor)
O
spinous process of C7-T5
I
A
medial border of scapula
I
A
N
O
I
A
Retraction and lateral rotation of scapula
(rotates glenoid cavity downward),
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OIA Flashcards
N Serratus anterior (“boxer’s muscle”)
O Ribs 1-8
I anterior aspect of medial (vertebral)
border of scapula
A Protracts and rotates scapula medially
(glenoid cavity moves upward)
N
External oblique
O
I
A
N
O
I
A
lower 8 ribs
linea alba, pubic bone, iliac crest
Flexion and rotation of trunk; lateral flexion
Internal oblique
Iliac crest, lumbar fascia, inguinal ligament
lower 4 ribs; linea alba; pubic crest
Flexion and rotation of trunk; lateral flexion
N
O
I
Rectus abdominis
pubic crest and pubic symphysis
A
Flexes and rotates trunk
Costal cartilages of ribs 5-7
and xiphoid process
N
Triceps brachii
O
Infraglenoid tubercle, posteriorr humerus
I
olecranon process of ulna
A
Extends forearm
4
OIA Flashcards
N
A
N
A
N
External intercostals
Elevates ribs for inspiration
Internal intercostals
Depresses ribs for forced expiration.
NOTE: There is no muscle for normal,
quiet exhalation;
the diaphragm and external intercostals
merely relax.
Diaphragm
(innervated by phrenic nerve)
O
cartilages of lowest ribs,
lumbar vertebrae
I
central tendon
A
Prime mover for respiration
Result of the diaphragm moves inferiorly,
contraction thoracic cavity volume expands,
inhalation
N
O
I
A
Transverse abdominis
iliac crest, cartilages of lower 6 ribs
linea alba and pubic crest
Compresses abdominal wall
5
OIA Flashcards
N
O
I
A
Gluteus maximus
ilium, sacrum, coccyx
gluteal tuberosity of femur
Major extensor of thigh
N
Gluteus medius
O
ilium
I
A
greater trochanter of the femur
Abducts, medially rotates thigh
N
O
Tensor fasciae latae
iliac crest and anterior superior
iliac spine
iliotibial tract
Steadies trunk on thigh
I
A
N
Psoas major
O
I
A
lumbar vertebrae
lesser trochanter of femur
Flexion of thigh and trunk
N
Iliacus
O
I
A
Iliac fossa
lesser trochanter of the femur
Prime mover of thigh flexion and flexes trunk
N
O
I
A
Rectus femoris
anterior inferior iliac spine
patella and tibial tuberosity
Extends knee and flexes thigh
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OIA Flashcards
N
O
I
A
Vastus lateralis
Greater trochanter
patella and tibial tuberosity
Extends knee
N
O
I
A
Vastus intermedius
proximal femur
patella and tibial tuberosity
Extends knee
N
O
I
A
Sartorius
anterior superior iliac spine
Medial proximal tibia
N
O
I
A
N
O
I
A
N
O
I
A
N
O
I
A
Flexes, abducts and laterally rotates thigh;
flexes knee
Gracilis
pubis
Medial proximal tibia
flexes knee, adducts and medially rotates thigh
Pectineus
pubis
posterior proximal femur
Flexes, adducts, and medially
rotates thigh
Adductor magnus
Pubis and ischium
linea aspera of femur
Adducts, flexes and medially
rotates thigh
Adductor longus
pubis near pubic symphysis
linea aspera
Adducts, flexes and medially
rotates thigh
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OIA Flashcards
N
O
I
A
Semimembranosus
ischial tuberosity
medial condyle of tibia
Flexes knee and extends thigh
N
O
I
A
Semitendinosus
ischial tuberosity
medial proximal tibia
Extends thigh, flexes knee
N
O
I
A
Biceps femoris
ischial tuberosity
fibula and tibia
Extends thigh, flexes knee
N
O
I
Gastrocnemius
medial and lateral condyles of femur
A
plantarflexes foot; flexes lower leg
N
Soleus
O
head of fibula and middle of tibia
I
posterior calcaneus via Achilles tendon
A
Plantarflexes foot
N
O
I
A
Calcaneal tendon (aka Achilles tendon)
onto calcaneus
Peroneus (fibularis) longus
head of fibula
First metatarsal and medial cuneiform
Plantarflexion and eversion of foot
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OIA Flashcards
N
O
I
A
Tibialis anterior
lateral condyle and shaft of tibia
medial cuneiform and first metatarsal
Dorsiflexes and inverts foot
N
O
I
A
N
O
I
A
N
O
I
A
Digastric “two bellies”
Mandible and mastoid process
hyoid bone
Opens mouth and depresses mandible
Mylohyoid
Mandible
Hyoid
Elevates hyoid
Sternocleidomastoid
manubrium and clavicle
mastoid process
Singly, rotates head to opposite
shoulder; together, flexes head
N
O
I
A
Sternohyoid
manubrium
hyoid bone
Depresses hyoid and larynx
N
O
I
A
Sternothyroid
manubrium
thyroid cartilage
N
O
I
A
Thyrohyoid
thyroid cartilage
hyoid
Depresses hyoid or elevates larynx
Depresses thyroid cartilage
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OIA Flashcards
N
A
I
Epicranius
N
Levator labii superioris
A
Raises upper lip
N
A
Zygomaticus
N
Orbicularis oculi
A
Closes eye
N
A
Orbicularis oris
N
A
raises eyebrows and pulls scalp posteriorly
Galea aponeurosis
raises corners of mouth, smiling muscle
Closes and puckers lips; kissing/
whistling muscle
Buccinator
Compresses cheek
(for whistling and sucking)
N
O
I
A
Masseter
zygomatic arch
angle and ramus of mandible
Prime mover of jaw closure;
elevates mandible
N
A
Temporalis
Closes jaw
10
OIA Flashcards
N
A
Superior rectus
Adducts and elevates eye
N
A
Inferior rectus
Adducts and depresses eye
N Medial rectus
A Adducts eye
N
A
Lateral rectus
Abducts eye
N
A
Superior oblique
Abducts and depresses eye
N
A
Inferior oblique
Abducts and elevates eye
HEAD MUSCLES (facial expression)
Special Note: Epicranius: Bipartite muscle consisting
of a frontal belly and occipital belly attached by galea
aponeurotica (an aponeurosis, which is a sheet of
connective tissue; a flat tendon). Special Note: Muscles
of facial expression are unique from other skeletal
muscles because they insert into the dermis, pulling the
skin, causing expressions.
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