Muscle Actions Flashcards
1
Q
buccinator
A
- compresses cheeks
- controls food during mastication
- sucking & whistling
2
Q
corrugator supercili
A
- “anger wrinkles”
- common area for botox injections
3
Q
orbicularis oculi
A
- squinting motion
4
Q
what are our smiling muscles?
A
- risorius (pulls corner of mouth)
- zygomaticus major & minor (pulls mouth corners)
- levator labii superioris (pulls up corner
- levator anguli oris (elevates angle of mouth)
5
Q
masseter
A
closes & protracts jaw
6
Q
temporalis
A
closes & retracts jaw
7
Q
lateral pterygoid
A
side to side motions
8
Q
medial pterygoid
A
grinding motion
9
Q
sternocleidomastoid
A
- anterior flexion
- rotation
- lateral flexion
10
Q
splenius capitis
A
- extension
- lateral flexion
- rotation
11
Q
splenius cervicis
A
- extension
- lateral flexion
- rotation
12
Q
trapezius
A
- extension of neck and scapula
13
Q
what muscles COMPRESS the abdominal wall?
A
- rectus abdominus
- transverse abdominus
- external/internal obliques
14
Q
what FLEXES the lumbar vertebrae?
A
- rectus abdominus
- Iliopsoas
15
Q
what EXTENDS the lumbar vertebrae?
A
- latissimus dorsi
- erector spinae complex
16
Q
what ROTATES the trunk?
A
external and internal obliques
17
Q
what ADDUCTS the humerus?
A
- coracobrachialis
- teres major
- latissimus dorsi
- pectoralis major
18
Q
what ABDUCTS the humerus?
A
- deltoid
- supraspinatus
19
Q
what FLEXES the humerus?
A
- coracobrachilis
- pectoralis major
- deltoid (anterior)
20
Q
what EXTENDS the humerus?
A
- deltoid (posterior)
- latissimus dorsi
21
Q
what muscles FLEXES the elbow?
A
- biceps brachii
- brachialis
- brachioradialis
22
Q
what muscles EXTENDS the elbow?
A
- triceps brachii
- anconeus
23
Q
what are some of the pronators & supinators?
A
- pronator teres
- pronator quadratus
- supinator
24
Q
flexion of wrist
A
- flexor digitorum superficialis
- flexor carpi ulnaris
- flexor carpi radialis
25
extension of wrist
- extensor carpi ulnaris
- extensor carpi radialis longus
26
adduction of wrist
- flexor carpi ulnaris
- extensor carpi ulnaris
27
abduction of wrist
- flexor carpi radialis
- extensor carpi radialis longus
28
extension of fingers
extensor digitorium
29
flexion of fingers
flexor digitorum superficialis
30
thumb movement
- abductor pollicis longus/brevis
- extensor pollicis longus/brevis
- flexor pollicis longus
31
hip flexors
- iliopsoas
- pectineus
- rectus femoris
- sartorius
32
hip extensors
- gluetus maximus
- biceps femoris
- semitendinosus
- semimembranosus
33
hip (thigh) abductors
- gluteus medius
- tensor fasciae latae
- sartorius
34
hip (thigh) adductors
- adductor longus/magnus
- gracilis
- pectineus
35
knee flexion
- hamstrings
- semitendinosus. semimembranosus, sartorius, popliteus
36
knee extension
- rectus femoris
- vastus lateralis/medialis/intermedius
37
dorsiflexion of ankle
- tibialis anterior
- extensor digitorum longus
38
plantar flexion of foot
- gastrocnemius
- soleus
- peroneus (fibularis) longus
