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63 terms

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the muscular skeletal system
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sartorius
a muscle in the thigh that helps to rotate the leg into the sitting position assumed by a tailor
tibialis anterior
a muscle running from the tibia to the first metatarsal and cuneiform bones
soleus
a broad flat muscle in the calf of the leg under the gastrocnemius muscle
fibularis longus
Fibula, first metatarsal, plantar flexion
iliopsoas
Flexion & Internal Hip Rotation, o: illium and lumbar vertebrae; i: femur; flexes hip
rectus femoris
part of quadriceps group, extends leg at knee
adductor longus
Adducts and flexes thigh at the hip; assists in medial rotation
tensor fasciae latae
Abducts, medially rotates, and flexes thigh; stabilizes the hips
extensor digitorum longus
Extends the lateral four toes; dorsiflexion of ankle and eversion of foot
vastus medialis
Extends leg at the knee; part of the quadriceps group
vastus lateralis
part of quadriceps group, extends leg at knee
gastrocnemius
the muscle in the back part of the leg that forms the greater part of the calf
pectineus
O: superior ramus of pubis; I: tibial tuberosity, medial side
gracilis
adducts femur/thigh
orbicularis oculi
Closes eye
orbicularis oris
spincter muscle used for "puckering up" and whistling
zygomaticus
smiling muscle
masseter
a large muscle that raises the lower jaw and is used in chewing
internal oblique
compresses abdomen, middle layer; fibers point up to the head
sternoclediomastoid
O: Sternal clavicle or manubrium. I: Mastoid region and lateral nuchal line. A: Flex neck or bend head toward shoulder while turning face to opposite side.
pectoralis minor
a skeletal muscle that draws down the scapula or raises the ribs
pectoralis major
a skeletal muscle that adducts and rotates the arm
sarratus anterior
Origin: ribs 1-8 / Insertion: Medial border of scapula / Action: prime mover: protracts scapula
internal intercostals
Muscles between ribs used for breathing, Depresses ribs for Expiration
rectus abdominus
major spine flexor, forms 6 pack and translates to "straight muscle of abdomen"
external oblique
origin is lower 8 ribs, compresses abdomen; most external of abdominal muscles
brachialis
..., flexes forearm at elbow
trapezius
either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms
transversus abdominus
compresses abdomen
frontalis
the face or front of a building, forehead muscle (Raises eyebrow andfacial expressions)
brachioradialis
Flexes Elbow
flexor carpi radialis
flexes wrist and abducts hand
brachialis
flexes elbow
triceps brachii
the skeletal muscle having three origins that extends the forearm when it contracts
biceps brachii
a muscle that flexes and supinates the forearm
pronator teres
Pronates forearm and assists in flexing the elbow
deltoid
a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
palmaris longus
flexes wrist
sternohyoid
depresses hyoid
temporalis
muscle extending from the temporal fossa to the coronoid process of the mandible
risorius
Draws angles of the mouth laterally; draws lips into the grinning expression
buccinator
compresses cheek, allowing for rapid changes in volume of mouth cavity
flexor carpi ulnaris
flexes and adducts wrist
flexor digitorum superficialis
Flexes Proximal Interphalangeal Joints and Secondarily Metacarpophalangeal joints and Wrists
interosseous
a structure between bones, such as the muscles between the metacarpals
lumbricals
In: median nerve

A: flex digits at MCPs and extends at interphalangeal joints
gluteus maximus
butt
gluteus medius
the middle of the three gluteal muscles
linea alba
midline of chest where abdominal aponeuroses meet
diaphragm
(anatomy) a muscular partition separating the abdominal and thoracic cavities
external intercostals
Elevates ribs during inspiration
coccygeus
pelvic floor
levator ani
Forms the floor of pelvic cavity; assists in defecation
levator scapulae
Elevates scapula
rhomboideus major
can raise and adduct the scapula
lattisimus dorsi
adducts and extends upper arm/shoulder
subscapularis
Rotates arm medially
infraspinatus
Rotates arm laterally
supraspinatus
abducts arm
teres major
Medially rotates and adducts the arm
coracobrachialis
Flexes and adducts the humerus
supinator
Supinates forearm
levator palpabrae
Closes the eye