Mink muscles: origin, insertion, function Flashcards
Sternomastoid
Origin: sternum
Insertion: mastoid process
Function: turns head
Clavotrapezius
Origin: back of skull and dorsal midline of neck
Insertion: clavicle
Function: pulls humerus forward
Clavodeltoid
Origin: clavicle
Insertion: deltoid ridge of humerus
Function: pulls humerus forward
Pectoralis major/minor
Origin: sternum
Insertion: pectoral ridge of humerus
Function: adducts forelimb
Cleidomastoid
Origin: clavicle
Insertion: back of skull
Function: turns head
Sartorius
Origin: ilium
Insertion: patella, tibia, fascia of knee
Function: extends hindlimb, adducts thigh
Tensor fascia lata
Origin: ilium and fascia surrounding hip muscles
Insertion: fascia latae covering gluteus medius and vastus lateralis
Function: extends hindlimb
Gluteus maximus
Origin: ilium and sacrum
Insertion: femur near greater trochanter
Function: abducts thigh
Caudofemoralis
Origin: transverse processes of second and third caudal vertebrae
Insertion: lateral surface of femur near patella
Function: abducts and extends thigh
Semitendinosus
Origin: tuberosity of ischium
Insertion: crest of tibia
Function: extends thigh and flexes hindlimb
Vastus lateralis
Origin: greater trochanter of femur
Insertion: vastus medialis and rectus femoris
Function: extends hindlimb
Semimembranosus
Origin: tuberosity and ramus of ischium
Insertion: medial epicondyle of femur
Function: extends hip and adducts hindlimb
Rectus femoris
Origin: ilium
Insertion: tibial crest
Function: extends hindlimb
Gracilis
Origin: pubis and ischium
Insertion: medial surface of knee and hindlimb
Function: adducts thigh
Adductor longus
Origin: pubis
Insertion: femur
Function: adducts thigh
Adductor femoris
Origin: ramus of pubis and ischium
Insertion: shaft of femur
Function: adducts thigh
Vastus medialis
Origin: shaft of femur
Insertion: patella and head of tibia
Function: extends hindlimb
External abdominal oblique
Origin: caudal ribs and lumbodorsal fascia
Insertion: linea alba
Function: compresses abdomen and flexes trunk
Acromiotrapezius
Origin: spine of axis to spinous process of 4th thoracic vertebra
Insertion: acromion process of scapula
Function: adducts and stabilizes scapula
Spinotrapezius
Origin: dorsal midline of thorax
Insertion: scapular spine
Function: rotates scapula backwards
Dorsoepitrochlearis
Origin: latissimus dorsi and tres major
Insertion: olecranon process of ulna
Function: extends elbow
Triceps brachii
Origin: scapula and lateral surface of humerus
Insertion: olecranon process of ulna
Function: extends elbow and forearm
Brachialis
Origin: lateral surface of humerus
Insertion: ulna
Function: flexes elbow
Splenius
Origin: spine of first thoracic vertebra
Insertion: lambdoidal ridge of skull
Action: elevates head
Longus colli
Origin: first six thoracic vertebrae and transverse process of cervical vertebrae
Insertion: transverse process of sixth cervical vertebra and centra of cranial cervical vertebrae
Function: bends neck ventrally and laterally
Rhomboideus cervicis
Origin: spines of first four thoracic vertebrae and back of skull
Insertion: vertebral border of scapula
Function: adducts scapula and pulls it cranially
Rhomboideus capitis
Origin: spines of first four thoracic vertebrae and back of skull
Insertion: vertebral border of scapula
Function: adducts scapula and pulls it cranially
Atlantoscapularis
Origin: atlas
Insertion: dorsal edge of scapula
Function: pulls scapula forward
Levator scapulae ventralis
Origin: atlas
Insertion: metacromion process of scapula
Function: pulls scapula forward
Internal abdominal oblique
Origin: lumbodorsal fascia and crural ligament between crest of ilium and pelvis
Insertion: linea alba
Function: compresses abdomen and flexes trunk
Transversus abdominis
Origin: inner surface of caudal rib cartilage, transverse processes of lumbar vertebrae, ilium, and crural ligament between ilium and pubis
Insertion: linea alba
Function: compresses abdomen and flexes trunk
Rectus abdominis
Origin: pubic tubercle
Insertion: first and second costal cartilages and sternum
Function: compresses abdomen and flexes trunk
Extensors of forearm
Origin: humerus
Insertion: metacarpals and phalanges
Function: extends and flexes wrist and fingers
Biceps brachii
Origin: cranial edge of coracoid process of scapula
Insertion: bicipital tuberosity of radius
Function: flexes forelimb
Flexors of forearm
Origin: humerus
Insertion: metacarpals and phalanges
Function: flexes wrist and fingers
Masseter
Origin: zygomatic arch
Insertion: masseteric fossa of mandible
Function: elevates mandible
Mylohyoid
Origin: medial surface of mandible
Insertion: basihyal
Function: raises floor of mouth
Digastric
Origin: paraoccipital process and mastoid process
Insertion: ventral surface of mandible
Function: depresses mandible
Genioglossus
Origin: mandibular symphysis
Insertion: tongue
Function: manipulates tongue
Geniohyoid
Origin: mandibular symphysis
Insertion: hyoid apparatus
Function: pulls tongue and hyoid forward
Sternohyoid
Origin: cartilage of first rib
Insertion: basihyal
Function: pulls tongue backward
Biceps femoris
Origin: tuberosity of ischium
Insertion: dorsal border of tibia and patella
Function: adducts thigh, flexes hindlimb
