Shared Flashcard Set

Details

Muscles
N/A
50
Anatomy
10th Grade
01/15/2011

Additional Anatomy Flashcards

 


 

Cards

Term
Epicranius (frontalis & occipitalis)
Definition
raises eyebrows & wrinkles forehead
Term
Orbicularis orbis
Definition
encircles mouth; kissing muscle, allows lips to close and pucker
Term
Orbicularis occuli
Definition
encircles eye; allows for winking, blinking, squinting; compresses teargland
Term
Buccinator
Definition
located in the wall of the cheek, helps hold food in contract with teeth when chewing; aids in blowing air out of the mouth; referred to as the trumpeter muscle
Term
Zygomaticus
Definition
zygomatic arch to of mouth; smiling; laughing
Term
Platysma
Definition
sheetlike muscle that extends from chest up over neck to face; pulls mouth downward in pouting; lowers mandible
Term
Sternocleidomastoid
Definition
bends head toward chest; prayer muscle
Term
Temporalis
Definition
large muscle at temples of head; elevates mandible & closes mouth when chewing
Term
Masseter
Definition
felt in front of the ear when teeth are clenched; chewing movements
Term
Trapezius
Definition
large triangular muscle in upper back; rotates scapula, flexes arm, shrugs, draw scapula & shoulder downward
Term
Rhomboideus major
Definition
acts to raise the scapula & adduct it; located under trapezius
Term
Serratus anterior
Definition
used to thrust shoulders foward when pushing or lifting heavy objects
Term
Pectoralis major
Definition
pulls upperarm forward & across chest; flexes upper arm
Term
Latissimus dorsi
Definition
pulls arm back in swimming, climbing, & rowing; extends upperarm
Term
Deltoid
Definition
thich triangular muscle that covers shoulder joint; abducts upper arm
Term
Triceps branchii
Definition
primary extensor of forearm; extends arm at elbow
Term
Biceps branchii
Definition
flexes in 2 parts; flexes arm at elbow & also rotates hand laterally as in turning a screwdriver (supination)
Term
Brachialis
Definition
under biceps branchii; most powerful flexor of elbow
Term
Supinator
Definition
rotates forearm laterally to supinate position
Term
Pronator teres
Definition
rotates forearm medially to pronate position; connects humerus & ulna to lateral surface of radius
Term
Flexor carpi radialis
Definition
medial anterior of forearm; flex and abduct wrist
Term
Flexor carpi ulnaris
Definition
medial anterior forearm; flex & adducts wrist
Term
palmaris longus
Definition
located between flexor carpi radialis & ulnaris; flexes wrist
Term
Externsor carpi radialis
Definition
located on lateral side of arms; extends wrist & abducts hand
Term

Extensor carpi ulnaris

Definition
located on lateral side of foreatm; extends & adducts hand
Term
Linea alba
Definition
Not an actual muscle but a tough band of connective tissue which serves for muscle attachment & to support internal organs. Located in the midline of torso
Term
Rectus abdominis
Definition
outermost layer lateral to linea alba; fibers are vertical
Term
External oblique
Definition
tenses abdominal wall & compresses content; diagnol fibers
Term
Internal oblique
Definition
tenses abdominal wall & compresses content; diagnol fiber in opposite direction of external
Term
Transversus abdominus
Definition
fibers are horizontal; most internal layer of the four
Term
Intercostals (internal & external)
Definition
located between the ribs; aids in respiratory movements
Term
Gluteus maximus
Definition
heaviest muscle in the body & covers most of the buttock; causes leg to straighten at hip when walking, running, or climbing; raises body form a sitting position
Term
Gluteus medius
Definition
located under maximus; abducts thigh & rotates it medially
Term
Gluteus minimus
Definition
located under medius; synergist of medius
Term
tensor facia latae
Definition
located anterior to gluteus medius; tenses thigh & functions to abduct & flexes thigh & rotates it medially
Term
Adductor magnus
Definition
located below gluteus; largest adductor of the thigh
Term
Gracialis
Definition
most medial of thigh muscles; rotates leg medially at knee & adduct thigh
Term
Biceps femoris (hamstring)
Definition
flex & rotate the leg laterally; thigh is extended
Term
Semitendinosus (Hamstring)
Definition
flex & rotate leg medially
Term
Semimembranosus (Hamstring)
Definition
flex & rotate leg medially (same as tendinous)
Term
Sartorius
Definition
elongated straplike muscle that passes across anterior thigh to medial knee; abducts thigh, rotates it laterally & medially
Term
Vastus medialis (Quads)
Definition
most medial
Term
Vastus lateralis (Quads)
Definition
most lateral
Term
Rectus femoris (Quads)
Definition
between medialis & lateralis
Term
Vastus intermedius (Quads)
Definition
posterior to above three (deep)
Term
Tibialis anterior
Definition
located anterioirly; dorsi flexion & inversion of the foot
Term
Tibialis posterior
Definition
located posterior to tibia; plantar flexion & inversion of foot
Term
Peroneus (Fibularis) longus
Definition
lateral muscle; plantar flexon & eversion of foot; also support arch
Term
Gastronemius
Definition
calf muscle attached at lower end to achilles tendon; aids in pushing forward when walking or running; flexes leg at knee; plantar flexion of foot
Term
Soleus
Definition
located under gastronemius; synergist of gastronemius
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