muscle origins Flashcards
trapezius
Location: upper back
Origin: Occipital bone, cervical, thoracic spine
Movements: Superior–elevates scapula
Middle–adducts scapula
Inferior–adducts scapula
Rhomboideus Major
Location: between shoulders, upper back
Origin: Spine
Movements: Elevates/adducts scapula
Serratus Anterior
Location: Ribs
Origin: Superior ribs
Movement: Abducts scapula
Pectoralis Major (flexor and adductor)
Origin: Clavicle, Sternum and costal cartilages of ribs
Insertion: Greater Tubercle and lateral lip of intertubercle sulcus of humerus
Deltoid (abductor and Flexor)
Origin: Acromial extremity of clavicle, acromion of scapula
Insertion: deltoid tuberosity of humerus
Latissimus Dorsi (extensor)
Origin: Spines, lumbar vertebre, crests of sacrum, illiac crest
Insertion: humerus
Hamstrings (Flexors)
Origin: Lateral/medial condoyles of femur, capsul of knee
Inserion: Tibia
Gastrocnemius (Flexor)
Lateral medial condoyle of femur/knee
Insertion: Calcaneus
Sartorious (flexor)
Origin: Anterior Suprior Iliac Spine
Insertion: Medial surface of body of tibia
Quadrieceps (Extensors)
Orignin: Linea aspera
Insertion: Patella via quad, tendons/ tibial tuberosity via patellar ligament
Sartorius
Location: Anterior, lateral
Action: Flexes and abducts at hip
Flexes leg at knee joint
Quads
Location: Anterior
Action at Hip: Flexes
Action at knee: extends
Hamstrings
Location: Posterior
Acton at hip: Extends
Action at knee: Flex
Tibialis Anterior (dorsiflexor)
Origin: lateral condoyle and body of tibia and interosseous membrane
Insertion: first metatarsal
Fibularis Longus (Plantar flexor)
Origin: Head/Body of fibula
Insertion: 1st metatarsal
Gastrocnemus (Plantar Flexor)
Origin: Lateral/Medial condoyle of femur/ capsule of knee
Insertion: Calcaneus
Action of Gastrocnemius
Flexes leg at knee
Flexes foot at ankle
Crosses both knee and ankle joints
Bicpes (Flexors)
Origin: Tubercle above glenoid cavity, caracoid process
Insertion: Radial tuberosity, biceps
Triceps (Extensors)
Origin: Long head - tubercle, laterl-lat./post. of humerus. Infraglenoid tubercle
Insertion: Olecranon of ulna
Tensor fasciae Latae (flexor and abductor)
Origin: Iliac crest
Insertion: Tibia by way of ilitibial tract
Rector Femoris (flexor)
Origin: Iliac spine
Insertion: Datella via quad tendons
Sartorius (flexor)
Origin: Anterior Superior Iliac spine
Instertion: Medial surface of body of tibia
Iliopsoas (flexor)
Origin: Transverse process lumber erect.
Location: With iliac into lesser trochanter of femur
Hamstrings (extensors)
Origin: Ischial tuberosity
Insertion: Head of fibula/ lateral condoyle of tibia. medial condoyle
Gluteus maximus (Extensor)
Origin: Iliac crest, sacrum, coccyx
Insertion: Iliotibia tract of fascia latae, linea aspera
Gluteus medius (Abductor)
Origin: Ilium
Insertion: Greater Trochanter of femur
Adductoro group (adductor)
Origin: Pubis
Instertion: Linea aspera of femur
Plane Joints
Movements: back/ forth.
side to side
rotate against
ex)bones at wrist and tarsal at ankle
Hinge Joints
Movements: Angular Opening and closing motion
Ex) Knee, elbow and ankle
Pivot Joints
Movements: rotate around own longitudinal axis
Ex) Shake head no
Condyloid Joints
Movements: Around 2 axex and limited circumduction
Ex) Wrist
Saddle Joints
Movements: around 2 axes and limited circumduction
Ex) carpometacarpal between carpus and metacarpal of thumb
Ball and Socket
Movements: 3 axes. Flexion-extension
abduction-adduction
rotation
Ex) shoulder and Hip
