Muscles of the body Flashcards
Pectoralis Minor
depress and protract (abduct) the scapula
Serratus Anterior
protracts (abduct) scapula.
Punching muscle
Linea Alba
Pectoralis Major
: flex, adduct, medial rotate, the arm/humerus
External Abdominal Oblique
flex vertebral column, rotate the vertebral column laterally flex the vertebral column, compress abdomen
Rectus Abdominus
flex vertebral column, compress the abdomen
Intercostals (Internal/External)
between ribs, elevate and depress ribs during active respiration
Internal= inhaling
Externals= exhalation
Diaphragm
Primary breathing muscle (respiration)
Scalenes (Posterior)
flex and rotate head
Scalenes (Middle)
flex and rotate head
Scalenes (Anterior)
used in active breathing. Rotates the head left and right, flexion of the head
Sternocleidomastoid (SCM)
active breathing, rotate the head, flex the head
Masseter
primary muscle for chewing
Elevate mandible
Zygomaticus (Minor/Major)
draws corners of mouth. smile muscle
minor above major
Orbicularis Oris
Action: closes lips, protrudes lips as in kissing
Orbicularis Oculi
close eye lids when blinking
Temporalis
attaches to coronoid process of mandible.
elevate mandible when chewing
Frontalis
o Action: elevate the eyebrows
Occipitalis
Trapezius
elevate AND depress the scapula, retract (adduct) the scapula. Also extends the head
Latissimus Dorsi
adduct, extend, and medially rotates the arm (humerus)
Teres Major
extends and medially rotates the arm (humerus)
Teres Minor
Action: lateral rotation of the arm (humerus)
Supraspinatus
Action: abduction of the arm (humerus)
Infraspinatus
Action: lateral rotation of the arm (humerus)
Subscapularis
Action: medial rotation of the arm (humerus)
Triceps Brachii (Lateral Head)
extend the forearm, extend the arm (humerus)
Lateral head
Long head
Medial head
Triceps Brachii (Long Head)
Biceps Brachii
flex the forearm, supinate the forearm, flex the arm (humerus)
Short head
Long head
Coracobrachialis
flex and medially rotates the arm (humerus
Brachialis
flex the forearm
Brachioradialis
flex the forearm (as in holding a can of water)
Flexor Carpi Radialis
flexion of the hand, abduct the hand
Pronator Teres
pronates the forearm
Palmaris Longus
flexion of the hand
Flexor Digitorum Superficialis
flexion of the hand, flexion of the digits
Flexor Carpi Ulnaris
flexion of the hand, adduction of the hand
Extensor Digitorum
extension of the hand and digits
Extensor Carpi Ulnaris
extension of the hand, adduction of the hand
Extensor Digiti Minimi
extension of the 5th digit (the pinky)
Extensor Carpi Radialis (Longus)
extends the hand, abduction of the hand
Iliacus
flexion of the thigh (femur)
Psoas Major
flexion of the thigh (femur)
Tensor Fasciae Latae
flex and abduction of the thigh (femur)
Ilio Tibial Band/Tract (ITT/ITB)
Adductor Magnus
adduction of thigh
Rectus Femoris
flex the hip, extend the leg
Vastus Intermedius
extend the leg
Vastus Medialis
extend the leg
Vastus Lateralis
extend the leg
Sartorius
flex thigh, laterally rotate thigh, flex leg
Gluteus Maximus
extend the thigh (femur), abduct the thigh, laterally rotates thigh
Gluteus Medius
abduct and medially rotate thigh
Biceps Femoris
extend the thigh, flex leg
Semitendinosus
extend the thigh, flex the leg
Semimembranosus
extend the thigh, flex the leg
Tibialis Anterior
dorsiflex the foot, invert the foot
Soleus
plantar flex foot
Gastrocnemius
plantar flex the foot, flex the leg
Deltoid
flex AND extend the arm (humerus), abduct the arm
Gracilis