Shared Flashcard Set

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Muscle Practical
Muscles!
68
Anatomy
Undergraduate 4
11/04/2018

Additional Anatomy Flashcards

 


 

Cards

Term
Occipitofrontalis (frontal belly)
Definition
Origin: Upper facial muscles

Insertion: Galeal aponeurosis

Action: Wrinkles forehead

[image]
Term
Occipitofrontalis (occipital belly)
Definition

Origin: Mastoid process

Insertion: Galeal aponeurosis

Action: Wrinkles forehead

Term
Corrugator supercilii
Definition

Action: Wrinkles forehead (near eyebrows)

 

[image]

Term
orbicularis oculi
Definition

Action: closes eyelids and aids passage/drainage of tears

 

[image]

Term
orbicularis oris
Definition

Action: Narrows mouth orifice, puckers lips

[image]

Term
Buccinator
Definition

Action: Aids mastication, tenses cheeks

[image]

 

Term
Depressor labii inferioris
Definition

Action: depresses the lower lip

[image]

Term
Levator labii superioris
Definition

Action: elevates upper lip

[image]

Term
zygomaticus major
Definition

Action: Elevates & draws mouth laterally

[image]

Term
Masseter
Definition

Origin: zygomatic arch and zygomatic process

Insertion: lower ramus of mandible

Action: Elevates mandible (closure of the mouth)

[image]

Term
Temporalis
Definition

Action: Elevates mandible

[image]

Term
Digastric
Definition

Action: Elevates hyoid bone. Depresses mandible and aids swallowing

[image]

Term
Sternocleidomastoid (both heads)
Definition

Origin: Anterior + Superior Manubrium, Medial clavicle

Insertion: mastoid process, nuchal line

Action: Flexes and rotates cervical spine. Protracts/extends head and neck.

[image]

Term
Splenius capitis (posterior neck)
Definition

Action: Extends + rotates cervical spine

[image]

Term
Platysma
Definition

Action: Depresses/wrinkles skin of lower face. Aids in mandible depression

[image]

Term
Omohyoid (both bellies)
Definition

Origin: Suprascapular ligament

Insertion: hyoid bone

Action: Depresses hyoid bone + larynx[image]

Term
External oblique
Definition

Action: Supports ab. wall, adducts and rotates trunk

[image]

Term
Internal oblique
Definition

Action: Supports ab. wall, abducts and rotates trunk.

[image]

Term
Transversus abdominis
Definition

Action: Supports ab. wall, aids forced expiration. Supports walls of inguinal canal

[image]

Term
Rectus abdominis
Definition

Origin: Pubic symphysis & cretst

Insertion: costal cartilages and xyphoid process

Action: flexes trunk, aids in forced expiration

[image]

 

Term
Pectoralis major
Definition

Origin: medial head of clavicle, manubrium/sternum, upper costal cartilages

Insertion: bicipital groove of humerus and deltoid tuberosity

Action: flexes, adducts, and medially rotates arm

[image]

 

Term
Serratus anterior
Definition

Action: Laterally rotates and protacts scapula

[image]

Term
External intercostals
Definition

Origin: Inferior border of the ribs

Insertion: Superior border of the ribs

Action: Fix intercostal spaces during respiration. Aids inforced inspiration by elevating ribs

[image]

Term
Internal intercostals
Definition

Origin: Inferior border of ribs

Insertion: Superior border of ribs

Action: Fix intercostal spaces during respiration. Aids forced inspiration by elevating ribs.

[image]

Term
Diaphragm
Definition

Action: Inspiration

[image]

Term
Erector spinae
Definition

Action: Extends and laterally flexes spine

[image]

Term
Trapezius
Definition

Action: laterally rotates and elevates scapula

[image]

Term
Rhomboid major
Definition

Action: Retracts scapula (back to rest position).

[image]

Term
Levator Scapulae
Definition

Action: raises medial border of scapula

[image]

Term
Latissimus dorsi
Definition

Origin: iliac crest, lower thoracic/lumbar/sacral vertebrae, scapula 

Insertion: intertubercular suclus of humerus

Action: Extends, adducts, and medially rotates arm.[image]

 

Term
Deltoid
Definition

Origin: clavicle, acromion, spine of scapula

Insertion: deltoid tuberosity of humerus

Action: abducts arm

[image]

Term
Supraspinatus
Definition

Origin: supraspinous fossa of scapula, upper surface of spine

Insertion: greater tuberosity of humerus, capsule of shoulder joint

Action: abducts arm, stabilizes shoulder joint

[image]

Term
Infraspinatus
Definition

Action: Laterally rotates arm and stabilizes shoulder joint

[image]

Term
Subscapularis
Definition

Action: Medially rotates arm and stabilizes shoulder joint.

[image]

Term
Teres major
Definition

Action: medially rotates and adducts arm

[image]

Term
Biceps brachii (short & long heads)
Definition

Origin: Long head, supraglenoid tubercle of scapula. Short head, coracoid process

Insertion: tuberosity of radius

Action: flexes elbow, weakly flexes shoulder, supinates forearm

[image]

Term
Brachialis
Definition

Action: flexes elbow

[image]

 

Term
Triceps brachii
Definition

Origin: Long head, infraglenoid tubercle of scapula. Medial head, posterior humerus.

Insertion: olecranon process of ulna

Action: Extends elbow. Stabilizes shoulder joint.

[image]

Term
Brachioradialis
Definition

Action: Flexes arm at elbow

[image]

Term
Flexor carpi radialis
Definition

Origin: medial epicondyle of humerus

Insertion: 2nd and 3rd metacarpals

Action: Flexes and abducts wrist

[image]

Term
Flexor carpi ulnaris
Definition

Action: Flexes and adducts wrist

[image]

Term
Flexor digitorum superficialis
Definition

Action: flexes metacarpals, phalanges, and wrist

[image]

Term
Flexor pollicis longus
Definition

Action: Flexes distal phalanx of thumb

[image]

Term
Extensor carpi radialis brevis
Definition

Origin: lateral epicondyle of humerus

Insertion: 3rd metacarpal 
Action: 
Extends and abducts hand at wrist

[image]

 

Term
Extensor carpi ulnaris
Definition

Action: Extends and adducts hand at wrist

[image]

Term
Extensor digitorum
Definition

Action: Extends all joints of fingers

[image]

Term
Extensor pollicis longus
Definition

Action: Extends interphalangeal and metacarpophalangeal joints of the thumb.

[image]

Term
Psoas major
Definition

Action: Flexes and laterally rotates hip

[image]

Term
Iliacus
Definition

Action: Flexes medially, rotates hip

[image]

Term
Gluteus Maximus
Definition

Origin: Ilium, Iliac crest, sacrum, coccyx

Insertion: gluteal tuberosity of femur, iliotibial tract

Action: Extends and laterally rotates hip

[image]

Term
Gluteus medius
Definition

Action: Abducts and medially rotates hip.

[image]

Term
Adductor longus
Definition

Action: Adducts and medially rotates hip.

[image]

Term
Sartorius
Definition

Origin: below anterior superior iliac spine

Insertion: upper medial shaft of tibia

Action: flexes, abducts, laterally rotates thigh at hip.

[image]

Term
Rectus femoris
Definition

Origin: anterior inferior iliac spine, ilium (above acetabulum)

Insertion: quadriceps tendon to patella to tubercle of tibia

Action: Extends leg at knee. Flexes thigh at hip.

[image]

Term
Vastus lateralis
Definition

Origin: greater trochanter (femur), lateral linea aspera

Insertion: quadriceps tendon to patella to tubercle of tibia

Action: Extends knee

Term
Vastus medialis
Definition

Action: Extends knee. Stabilizes patella.

[image]

Term
Vastus intermedius
Definition

Action: Extends knee

[image]

Term
Gracilis
Definition

Action: Adducts hip. Flexes knee and medially rotates flexed knee.

[image]

Term
Biceps femoris
Definition
Action: Flexes and laterally rotates knee.[image]
Term
Semitendinosus muscle
Definition

Action: Flexes and medially rotates knee.

[image]

Term
Semimembranosus muscle
Definition

Action: Flexes and medially rotates knee. Extends hip.

[image]

Term
Tibialis anterior
Definition

Action: Extends and inverts foot at ankle.

[image]

Term
fibularis (peroneus) longus
Definition

Action: Plantar flexes and everts foot.

[image]

Term
Gastrocnemius
Definition

Origin: medial & lateral condyles of femur.

Insertion: Calcaneus

Action: Plantar flexes foot. Flexes knee.

[image]

Term
Soleus
Definition

Action: Plantar flexes foot

[image]

Term
Flexor digitorum longus
Definition

Action: Flexes distal phalanges of lateral four toes

[image]

Term
Extensor digitorum longus
Definition

Action: Extends toes as well as foot at ankle

[image]

Term
Flexor hallucis longus
Definition

Origin: posterior fibula, aponeurosis of digitorum longus

Insertion: base of distal phalanx

Action:  Flexes distal phalanx of big toe

[image]

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