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Muscles
Origin, Insertion, Function
101
Biology
Undergraduate 1
03/29/2014

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Cards

Term
Obturator Internus
Definition
Origin - Ischium
Insertion - Femur
Function - Lateral rotation (hip)
Term
Gmellus Muscles
Definition
Origin - Ischium
Insertion - Femur
Function - Lateral rotation (hip)
Term
Piriformis
Definition
Origin - Sacrum
Insertion - Femur
Function - Lateral Rotation (hip)
Term
Obturator Externus
Definition
Origin - Ischium/Pubis
Insertion - Femur
Function - Lateral rotation (hip)
Term
Quadratus Femoris
Definition
Origin - Ischium
Insertion - Femur
Function - Lateral Rotation (hip)
Term
Pectineus
Definition
Origin - Pubis
Insertion - Femur
Function - Adduction (hip)
Term
Gracillis
Definition
Origin - Ischium/Pubis
Insertion - Tibia
Function - Adduction (hip)
Term
Adductor Longus
Definition
Origin - Pubis
Insertion - Femur
Function - Addution (hip)+ medial rotator
Term
Adductor Brevis
Definition
Origin - Pubis
Insertion - Femur
Function - Adduction (hip)+ medial rotator
Term
Adductor Magnus
Definition
Origin - Ischium/Pubis
Insertion - Femur
Function - Adduction (hip)+ medial rotator
Term
Gluteus Minimus
Definition
Origin - Illium
Insertion - Femur (Greater Trochanter)
Function - Abduction (hip)+ medial rotator
Term
Gluteus Medius
Definition
Origin - Illium
Insertion - Femur (Greater Trochanter)
Function - Abduction (hip)+ Medial rotator
Term
Tensor Facia Latae
Definition
Origin - Illiac Crest
Insertion - Illiotibial Tract
Function - Abduction (hip)
Term
Illiacus
Definition
Origin - Illium
Insertion - Femur (Lesser Trochanter)
Function - Flexion (hip)+ lateral rotator
Term
Psoas Major
Definition
Origin - Lumbar Vertebrae (L1-L5)
Insertion - Femur (Lesser Trochanter)
Function - Flexion (hip)+ Lateral rotator
Term
Rectus Femoris (Bi-Articular)
Definition
Origin - Illium (Anterior Inferior Illiac Spine)
Insertion - Patella + Tibia
Function - Flexion (hip)+ Extension (knee)
Term
Sartorius (Bi-Articular)
Definition
Origin - Illium (Anterior Superior Illiac Spine)
Insertion - Tibia
Function - Flexion (hip)+ Flexion (knee)+ Lateral rotator and abductor
Term
Gluteus Maximus (Uni-Articular)
Definition
Origin - Illium/Sacrum/Coccyx
Insertion - Femur/Tibia
Function - Extension (hip)+ Lateral rotation and adbuction
Term
Semi-tendinosus
Definition
Origin - Ischium (Ischial Tuberosity)
Insertion - Tibia
Function - Extension (hip)+ Flexion (knee)
Term
Semi-membranosus
Definition
Origin - Ischium (Ischial Tuberosity)
Insertion - Tibia
Function - Extension (hip)+ Flexion (knee)
Term
Biceps Femoris (short head)
Definition
Origin - Femur
Insertion - Fibula/Tibia
Function - Extension (hip)+ Flexion (knee)
Term
Biceps Femoris (long head
Definition
Origin - Ischium (Ischial tuberosity)
Insertion - Fibula/Tibula
Function - Extension (hip)+ Flexion (knee)
Term
Anterior Cruciate Ligament
Definition
Prevents tibia from sliding forwards
Term
Posterior Cruciate Ligament
Definition
Prevents tibia from sliding backwards
Term
Lateral Collateral Ligament
Definition
Prevents rotation of the knee when extended
Term
Medial Collateral Ligament
Definition
Prevents rotation of the knee when extended
Term
Vastus Lateralis
Definition
Origin - Femur
Insertion - Patella and Tibia
Function - Extension (knee)
Term
Vastus Intermedius
Definition
Origin - Femur
Insertion - Patella and Tibia
Function - Extension (knee)
Term
Vastus Medialis
Definition
Origin - Femur
Insertion - Patella and Tibia
Function - Extension (knee)
Term
Gastrocnemius
Definition
Origin - Femur (Lateral head = lateral epicondyle, Medial head = medial epicondyle
Insertion - Calcaneus
Function - Plantarflexion + Flexion (knee)
Term
Plantaris
Definition
Origin - Femur
Insertion - calcaneus
Function - Plantarflexion + Flexion (knee)
Term
Tibialis Anterior
Definition
Origin - Tibia
Insertion - First Metatarsal
Function - Dorsiflexion and inversion of foot
Term
Extensor Digitorum Longus
Definition
Origin - Tibia and Fibula
Insertion - Distal Phalanges 2-5
Function - Dorsiflexion and extension of toes 2-5
Term
Extensor Hallucis Longus
Definition
Origin - Fibula
Insertion - Distal Phalanx
Function - Dorsiflexion and inversion and extends great toe
Term
Soleus
Definition
Origin - Tibia and Fibula
Insertion - Calcanues
Function - Plantarflexion
Term
Flexor Digitorum Longus
Definition
Origin - Tibia
Insertion - Distal Phalanges 2-5
Function - Plantarflexion and flexes toes 2-5
Term
Flexor Hallucis Longus
Definition
Origin - Fibula
Insertion - Distal Phalanx
Function - Plantarflexion and flexes great toe
Term
Subscapularis (rotator cuff)
Definition
Origin - Scapula
Insertion - Humerus (Lesser Tubicle)
Function - Medial rotation (shoulder)
Term
Supraspinatus rotator cuff)
Definition
Origin - Scapula
Insertion - Humerus (lesser tubicle)
Function - Medial rotation (shoulder)
Term
Infraspinatus (rotator cuff)
Definition
Origin - Scapula
Insertion - Humerus (greater tubicle)
Function - Lateral rotation (shoulder)
Term
Teres Minor (rotator cuff)
Definition
Origin - Scapula
Insertion - Humerus (greater tubicle)
Function - Lateral rotation (shoulder)+ weakly adducts
Term
Serratus anterior
Definition
Origin - Ribs (First 8 or 9)
Insertion - Scapula
Function - Abduction (scapula)+ upward rotation
Term
Levator Scapulae
Definition
Origin - C1-C4
Insertion - Scapula
Function - Elevation (scapula)+ pull scapula up and medially
Term
Rhomboid Major
Definition
Origin - T2-T5
Insertion - Scapula
Function - Adducts (retracts) and elevates (scapula)
Term
Rhomboid Minor
Definition
Origin - C7-T1
Insertion - Scapula
Function - Adducts (retracts) and elevates (scapula)
Term
Trapezius
Definition
Origin - C7-T12
Insertion - Clavicle, Acromion and Scapula
Function - Adduction, Elevation, Rotation, Extension, Depression
Term
Pectoralis Minor
Definition
Origin - Ribs 3-5
Insertion - Scapula
Function - Draws scapula forward and downwards
Term
Pectoralis Major
Definition
Origin - Clavicle and Sternum
Insertion - Humerus (Greater tubicle)
Function - Flexion, Medial rotation, Adduction (shoulder)
Term
Flexor carpi ulnaris
Definition
Origin - Humerus
Insertion - 5th metacarpal
Function - Flexes and Adducts (Wrist)
Term
Flexor carpi radialis
Definition
Origin - Humerus
Insertion - 2nd and 3rd metacarpals
Function - Flexes and abducts (wrist)
Term
Extensor carpi ulnaris
Definition
Origin - Humerus
Insertion - 5th metacarpal
Function - Extends and adducts (wrist)
Term
Extensor carpi radialis longus
Definition
Origin - Humerus
Insertion - 2nd metacarpal
Function - extends and abducts (wrist)
Term
Extensor carpi radialis brevis
Definition
Origin - Humerus
Insertion - 3rd metacarpal
Function - Extension and abduction (wrist)
Term
Anconeus
Definition
Origin - Humerus
Insertion - Ulna
Function - Extension (Elbow)
Term
Supinator
Definition
Origin - Humerus and Ulna
Insertion - Radius
Function - Supination (forearm)
Term
Brachialis
Definition
Origin - Humerus
Insertion - Ulna
Function - Flexion (elbow)
Term
Brachioradialis
Definition
Origin - Humerus
Insertion - Radius
Function - Flexion (elbow)
Term
Pronator Teres
Definition
Origin - Humeral head (Humers) Ulnar head (Ulna)
Insertion - Radius
Function - Pronation and flexion (elbow)
Term
Biceps Brachii
Definition
Origin - Long head (scapula) Short head (scapula)
Insertion - Radius (radial tuberosity)
Function - Supination and Flexion (elbow)
Term
Triceps Brachii
Definition
Origin - Long head (scapula) Medial and lateral (Humerus)
Insertion - Ulna
Function - Extends (Elbow)
Term
Pronator Quadratus
Definition
Origin - Ulna
Insertion - Radius
Function - Pronation (Forearm)
Term
Ribs
Definition
False (5)
Floating (2)
Term
Spine (2)
Definition
Cervical 7 (concave)
Thoracic 12 (convex)
Lumbar 5 (concave)
Sacrum 5 (fused-convex)
Coccyx 4 (fused)
Term
Scoliosis
Definition
Thoracic or Lumbar - Is an over exaggerated lateral curvature of the spine
Term
Kyphosis
Definition
Exaggerated curvature of Thoracic Region of the
vertebral column
Term
Lordosis
Definition
Exaggerated curvature of the lumbar region of
the vertebral column
Term
Cervical Vertebrae
Definition
Small

Short Spinous Process
(except for C7)

Large, oval Vertebral Foramen

Movements - Flexion/Extension;
Rotation, & Lateral Flexion
Term
Thoracic Vertebrae
Definition
Connect with the ribs

Long Spinous Process

Circular Vertebral Foramen

Movements - Rotation; Lateral
Flexion
Term
Lumbar Vertebrae
Definition
Big

Weight Bearing

Short Spinous Process

Triangular Vertebral Foramen

Movements - Flexion/Extension; Lateral Flexion
Term
Sternocleidomastoid
Definition
Origin - Sternum and Clavicle
Insertion - Skull bones
Function - Flexion (head)and lateral rotation
Term
Splenius Muscles
Definition
Origin - Cervical and Thoracic Vertebrae
Insertion - Skull bones
Function - Extends (head and neck) Laterally rotates and flexes (head and neck)
Term
Erector Spinae
Definition
Origin - Ilium, Ribs;
Lumbar, thoracic,
cervical vertebra

Insertion - Skull Bones, Ribs;
thoracic, & cervical
vertebrae

Function - Lateral flexion and extension
Term
Saggital plane
Definition
Vertical plane running from front to back that divides body into right and left
Main movements are Flexion and Extension
Term
Frontal Plane
Definition
Vertical plane running from side to side that divides body into anterior and posterior
Main movements are adduction and abduction
Term
Transverse Plane
Definition
Horizontal plane that divides body into upper and lower parts (superior and inferior)
Main movements are rotation
Term
Lateral rotators
Definition

Obturator internus

Gmellus muscles

Piriformis

Quadratus Femoris

Obturator externus

Term
Adductors (hip)
Definition

Pectineus 

Gracillis

Adductor longus

Adductor brevis

Adductor magnus

Term
Medial rotators
Definition

Adductor longus

Adductor brevis

Adductor magnus

Gluteus minimus 

Gluteus medius

Term

Abductors

 

Definition

Gluteus minimus 

Gluteus medius

Gluteus maximus

Tensor Facia Latae

Term
hip flexors
Definition

Iliacus

Psoas Major

Rectus Femoris

Sartorius 

Term
Dorsiflexors
Definition

Extensor digitorum longus

Extensor Hallucis longus

Tibialis anterior

Term
Plantar flexors
Definition

Flexor digitorum longus

Flexor hallucis longus

Plantaris

Gastrocnemius

Soleus

Term
Fibularis longus
Definition

Origin - Fibula

Insertion - 1st metatarsal

Function - Plantarflexes and everts

Term
Fibularis brevis
Definition

Origin - Fibula

Insertion - 5th metatarsal

Function - Plantarflexes and everts

Term
Fibularis tertius
Definition

Origin - Fibula

Insertion - 5th metatarsal

Function - Dorsiflexes and everts 

Term
Evertion of the foot
Definition

Fibularis longus

Fibularis Brevis

Fibularis Tertius

Term
Invertors of the foot
Definition

Tibialis anterior

Tibialis posterior

Term
Rotator cuff
Definition

Subscapularis - internal rotation

Supraspinatus - Abduction 

Infraspinatus - Lateral rotation 

Teres Minor - Lateral rotation (weakly adducts)

Term
Muscles moving the scapula
Definition

Serratus anterior - abduction and upward nd downward rotation

Levator Scapulae - elevates 

Rhomboid major - elevation and adduction

Rhomboid minor - elevation and adduction

Term
Latissiumus dorsi
Definition

Origin - T7-L5, Illium and ribs

Insertion - Humerus

Function - Adduction, Extension, Depression

Term
Deltiod
Definition

Origin - Clavicle and scapula (acromion & spine)

Insertion - Humerus

Function - abduction, flexion, extension

Term
Extensor digitorum
Definition

Origin - Humers

Insertion - Phalanges

Function - Extension (wrist)

Term
Pulmaris Longus
Definition

Origin - Humerus

Insertion - Pulmar facia/phalanges

Function - Flexion (wrist)

Term
Golfers elbow
Definition

Medial Epicondylitis

 

Inflammation of the tendons of the wrist flexors

 

Risk factors include repetitive elbow fexion

Term
Tennis Elbow
Definition

Laterl epicondylitis

 

Inflammation of the tendons of the wrist extensors

 

Risk factors include repetitive elbow extension

Term
Functions of vertebral column
Definition

Stability and support

 

Motion in all directions

 

Protection

Term
Movements at the spine
Definition

Flexion - extension

 

Rotation

 

Lateral flexion

Term
Rectus abdominus
Definition

Origin - Pubis

Insertion - Ribs 5-7 and sternum

Function - Flexion of vertebral column

Term
Internal oblique
Definition

Origin - Illiac crest

Insertion - Ribs 8-12

Function - Flexion, lateral flexion and rotation of vertebral column

Term
External oblique
Definition

Origin - ribs 5-12

Insertion - Illiac crest

Function - Flexion, Lateral flexion and rotation of vertebral column

Term
Transversus abdominis
Definition

Origin - Illiac crest and ribs 6-12

Insertion - xypoid process and pubis

Function - Compress abdomen

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