Shared Flashcard Set

Details

Muscle Origin/Insertion
A&P
30
Anatomy
Undergraduate 1
04/08/2016

Additional Anatomy Flashcards

 


 

Cards

Term
Orbicularis Oculi
Definition

Origin: Medial wall of orbit

 

Insertion: Circumferentially around orbit

 

Action: Closes the eye

Term
Obiculous Oris
Definition

Origin: Muscle fibers surrounding the mouth

 

Insertion: Skin corners of mouth (modiolus)

 

Action: Closes or protrudes the lips

Term
Buccinator
Definition

Origin alveolar process of maxilla & mandible along the pterygomandibular raphe

 

Insertion: Modiolus

 

Action: Compresses the cheeks

Blood: Facial artery

 

Innervation: Buccal branch of facial nerve

Term
Masseter
Definition

Origin: Zygomatic arch

 

Insertion: Angle of mandilble

 

Action: Closes lower jaw (clenches teeth)

 

Term
Temporalis
Definition

Origin: Temporal Bone

 

Insertion: Coronoid process of mandible

 

Action: Elevates and retracts mandible

Term

Sternocleidomastoid

 

Definition

Origin: Manubrium of sternum

           Medial Portion of clavicle

 

Insertion: Mastoid process of temporal bone

 

Action: Bilaterally flexes the neck

           Unilaterally rotates to opposite side

           Laterally flexes to the same side

Term
Trapezius
Definition

Origin: Superior nuchal line

           Ligamentum Nuchae

           Spinous Processes C1-T12

 

Insertion: Lateral 1/3 of clavical

               Acrominion

               Spine of scapula

 

Action: Elevates scapula

           Upward rotation of scapula

           Retracts scapula

Term
Latissimus Dorsi
Definition

Origin: Spinous Process of T7-L5

           Sacrum

           Illac Crest

 

Insertion: Intertuberacular groove

 

Action: Adduction and medial rotation of humerous

           Extension from flexed position

Term
Pectoralis Major
Definition

Origin: Medial 1/3 of Clavicle

           Sternum

           Upper 6 Ribs

 

Insertion: Medial margin of Scapula

 

Action: Abducts Humerus

           Medially rotates Humerus

           Flexion of arm from extension

Term
Rhomboid Major & Minor
Definition

Origin: Spinous Processes of C7-T5

           Ligamentum Nuchae

 

Insertion: Medial Margin of Scapula

 

Action: Retract Scapula

Term
Serratus Anterior
Definition

Origin: Ribs 1-9

 

Insertion: Medial Border of Scapula (anterior side)

 

Action: Protract Scapula

 

Term
Deltoid
Definition

Origin: Lateral 1/3 of Clavical

           Lateral Boarder of the Acrominion

           Scapular spine

 

Insertion: Deltoid tuberosity of Humerus

 

Action: Abducts Arm

Term

Supraspinatus

 

Definition

Origin: Supraspinous Fossa of Scapula

 

Insertion: Greater Tubrical of Humerous

 

Action: Abduction of Arm

Term
Infraspinatus
Definition

 

Origin: Infraspinous Fossa of Scapula

 

Insertion: Greater Tubrical of Humerous

 

Action: External/Lateral Rotation of the Humerus

Term
Teres Minor
Definition

Origin: Middle half of lateral margin of the Scapula

 

Insertion: Greater Tubercle of Humerus

 

Action: External/Lateral rotation of Humerus

Term
Subscapularis
Definition

Origin: Subscapular Fossa

 

Insertion: Lesser Tubercal of Humerus

 

Action: Medial rotation of the Humerus

Term
Biceps Brachii
Definition

Origin: Long head- Supraglenoid tubercle of Scapula

           Short head- Coracoid process of Scapula

 

Insertion: Radial Tuberosity

               Bicipital Aponeurosis

 

Action: Flexes the forearm at the elbow

           (When supinated, supinates forearm, flexes

           shoulder)

Term
Triceps Brachii
Definition

Origin: Long Head- infraglenoid tubercle of Scapula

           Lateral Head- Humerus posterior proximal half of shaft

           Medial Head- Posterior shaft of Humerus

 

Insertion: Posterior surface of the olecranon process of ulna

 

Action: Long head abducts the arm or extends shoulder joint

           All three heads extend elbow joint

 

Term
Flexor Digitorum Profundud
Definition

Origin: Upper 3/4 ulna

 

Insertion: Distal phalanx of medial 4 digits

 

Action: Flexes the distal and proximal ip joints, flexes wrist

Term
Extensor Digitorum
Definition

Origin: Lateral epicondyle

 

Insertion: Middle phalanx and distal phalanx of 4 fingers

 

Action: extends 4 medial digits

           extends the wrist

Term

Rectus abdominus

 

Definition

Origin: Pubic symphysis

 

Insertion: Cartiliges of ribs 5,6,7

               Xiphiod process

 

Action: Flexes Trunk

           Compresses abdomen

Term
External Oblique
Definition

Origin: Ribs 5-12

 

Insertion: lliac crest

               linea alba

 

Action: Bilaterally- flexes trunk

           Unilaterally- Laterally flexes and rotates the spine

Term
Internal Oblique
Definition

 

Origin: lliac crest

           inguinal ligament

           thoracolumbar fossa

 

Insertion: Cartilage of ribs 7-10

               Linea alba

 

Action: Bilaterally- flexes trunk

         Unilaterally- Laterally flexes and rotates the spine

Term
Gluteus Maximus
Definition

Origin: Outer rim of ilium

           Dorsal surface of sacrum and coccyx

           Sarcotuberous ligament

 

Insertion: IT band (primary)

               Gluteal tuberosity of femur

 

Action: Powerful extensor of hip

           Laterally rotates thigh

Term

Gluteus Medius

 

Gluteus Minimus

Definition

Origin: Outer aspect of ilium

 

Insertion: Greater trochanter

 

Action: abduct and medially rotate the thigh

Term
Quadreceps Femoris
Definition

1)Rectus Femoris

   Origin: Anterior inferior iliac spine (cross hip joint)

2)Vastus Lateralis

   Origin: Linea aspera of femur

3)Vastus Medialis

   Origin: linea aspera of femur

4)Vastus Intermedius

   Origin: Anterior lateral aspect of femoral shaft

 

Insertion: Form common tendon inserting into the patella then to the tiberal tuberosity via the patellar ligament

 

Action: Rectus portion flexes hip

           All four together extend the knee

Term
Semitendinosus
Definition

Origin: ischial tuberosity

 

Insertion: medial aspect of tibial shaft

 

Action: extends hip

           flexes knee

Term
Semimembranosus
Definition

Origin: ischial tuberosity

 

Insertion: medial aspect of medial tibial condyle

 

Action:extends hip

          flexes knee

Term
Biceps Femoris
Definition

 

Origin: Long head- ischial tuberosity

           Lateral head- lateral lip of linea aspera

 

Insertion: head of fibula

 

Action: extends hip

           flexes knee

Term
Gastrocnemius
Definition

Origin: Medial head- near medial condyle of femur

           Lateral head- near lateral condyle of femur

 

Insertion: Calcaneus via calcaneal tendon

 

Action: Plantarflex the ankle

           Knee flexion

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