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Adams Anatomy

Muscles & their actions

QuestionAnswer
Orbicularis Oculi closes eye
masseter elevates mandible
temporalis elevates mandible
digastric depresses mandible and elevates hyoid during swallowing
sternocleidomastoid flexes neck and rotates head
omohyoid depresses hyoid after swallowing
sternohyoid depresses hyoid after swalling
external oblique compresses abdomen, flexes and rotates trunk
internal oblique compresses abdomen, flexes and rotates trunk
transversus abdominis compresses abdomen
rectus abdominis compresses abdomen, flexes trunk
diaphragm flattens downward to expand thoracic cavity for inspiration
external intercostals pull ribs out and up to expand thoracic cavity for inspiration
internal intercostals draw ribs together and in to decrease thoracic cavity for expiration
pectoralis minor depresses and moves scapula anteriorly
serratus anterior rotates scapula to point glenoid cavity upward
trapezius elevates clavicle and scapula, adducts scapula, or depress scapula
levator scapulae elevates scapula
rhomboid major adducts scapula
rhomboid minor adducts scapula
pectoralis major flexion and adduction at shoulder
latissimus dorsi extension and adduction at shoulder
deltoid abduction at shoulder
supraspinatus abduction at shoulder
infraspinatus lateral rotation at shoulder
teres minor lateral rotation at shoulder
teres major medial rotation at shoulder
subscapularis medial rotation at shoulder
triceps brachii extension at elbow
biceps brachii flexion at elbow
brachialis flexion at elbow
brachioradialis flexion at elbow
pronator teres pronates forearm
supinator supinates forearm
flexor carpi radialis flexion and abduction at wrist
palmaris longus flexion at wrist
flexor carpi ulnaris flexion and adduction at wrist
extensor carpi radialis longus extension and abduction at wrist
extensor carpi radialis brevis extension and abduction at wrist
extensor digitorum extension at finger joints and wrist
extensor carpi ulnaris extension and adduction at wrist
psoas major flexion at hip
iliacus flexion at hip
gluteus maximus extension at hip
gluteus medius abduction at hip
tensor fasciae latae tenses iliotibial tract to support the knee joint
adductor longus adduction at hip
adductor magnus adduction at hip
gracilis adduction at hip
sartorius flexion and lateral rotation at hip, flexion at knee = ("crossing leg")
rectus femoris flexion at hip, extension at knee
vastus lateralis extension at knee
vastus medialus extension at knee
vastus intermedius extension at knee
biceps femoris extension at hip, flexion at knee
semimebranosus extension at hip, flexion at knee
semitendinosus extension at hip, flexion at knee
gastrocnemius plantar flexion at ankle
soleus plantar flexion at ankle
tibialis anterior dorsiflexion at ankle
Created by: fabarnick