Parts of Muscles Flashcards
Muscles of the rotator cuff
Supra-spinatus
Infra-spinatus
Teres minor
Subscapularis
Origin, insertion, function of the rotator cuff
O- Scapula (Posterior surface
of supraspinous fossa)
I- Greater tubercle of Humerus
via a tendon
F- Stabilize and Abduct Shoulder
Elbow Flexors / Extensors – Anterior
Biceps Brachii
Brachialis
Bracioradialis
Pronator Teres
Origin, insertion, function of the Biceps Brachii
O- Scapula
I- Radius
F- Elbow Flexion
Origin, insertion, function of the Brachialis
O- Humerus
I- Ulna
F- Elbow Flexion
Origin, insertion, function of the Pronator teres
O- Humerus & Ulna
I- Radius
F- Pronates Arm
Elbow Flexors / Extensors – Posterior
Triceps brachii (short head)
Triceps brachii (long head)
Origin, insertion, function of the Short head Triceps
O- Humerus
I- Ulna
F- Extension of Arm
Origin, insertion, function of the Long head Triceps
O- Infraglenoid tubrecle
I- Ulna
F- Extension of Arm
Origin, insertion, function of the Trapezius
O- Occipital Bone, Cervical &
Thoracic Vertebrae
I- Spine of Scapula, Acromion
& Clavicle
F- Scapular elevation, adduction,
retraction, upward rotation and
depression – extends the neck
Origin, insertion, function of the Latissimus Dorsi
O – Lumbar /Thoracic
Vertebrae, Iliac Crest
& Sacrum
I – Humerus
F – Adduction, Extension &
Internal Rotation of Arm
Origin, insertion, function of the Pectoralis Major
O- Clavicle, Sternum, Ribs 1-6,
External Oblique Muscle
I – Intertubercular (Bicipital) Groove
(Humerus)
F- Internal Rotation, Flexion
& Adduction of Arm
Origin, insertion, function of the Pectoralis Minor
O - third to fifth ribs adjacent to the costochondral junction.
I - Coracoid process
F - stabilization, depression, abduction or protraction, internal rotation and downward rotation of the scapula
Rectus Abdominis
O – Pubic Crest,
Symphysis Pubis
I – Xiphoid Process
Inferior Ribs
F – Flexes the Trunk
(Expiration & Defecation)
External Oblique
O- Lower 8 ribs
I – Iliac Crest, Linea Alba & Pubis
F- Flex, Rotate Vertebral Column
Compress Abdomen during
forced respiration
Quadriceps Group
Rectus femoris
Vastus intermedius
(underneath)
Vastus lateralis
Vastus medialis
Origin, insertion, function of the Rectus Femoris
O- Ilium (Anterior Iliac Spine)
I- Patellar Tendon > Tibia
F- Knee Extension, Hip Flexion
Origin, insertion, function of the Vastus Lat. / Inter. / Med.
O- Femur
I- Patellar Tendon > Pat. Ligament > Tibia
F- Knee Extension
Muscles of the Hamstring Group
Semitendinosus
Semimembranosus
Biceps Femoris
Origin, insertion, function of the Semitendinosus
O- Ischial Tuberosity
I- Tibia
F- Flexes Knee, Extends Hip
Origin, insertion, function of the Semimembranosus
O- Ischial Tuberosity
I- Tibia
F- Flexes Knee, Internal Rotation of Knee
Extends Hip
Origin, insertion, function of the Biceps Femoris
O- Ischial Tuberosity
I- Fibula
F- Flexes Knee, Extends Hip,
Externally Rotates Knee
Gluteal Group
Gluteus Maximus
Gluteus medius
Gluteus minimus
Gracilis
Origin, insertion, function of the Gluteus Maximus
O- Ilium, Sacrum & Coccyx
I- Femur
F- Hip Extension & Rotation
