Lab Exam 2 Cat Muscles Flashcards
Vastus lateralis
Extends crus
Acromiodeltoid
Flexes and rotates humerus laterally
Acromiotrapezius
Adducts and stabilizes scapula
Biceps femoris
Flexes crus, abducts thigh
Brachialis
Flexes antebrachium
Brachioradialis
Supinates manus
Clavobrachialis
Flexes antebrachium
Clavotrapezius
Draws scapula anterodorsally
Cleidomastoid
Turns head when clavicle stabilized; draws clavicle anteriorly when head stabilized
Coccygeus
Flexes tail
Digastric
Depresses mandible
Epitrochlearis
Extends antebranchium
Erector spinae
Extends vertebral column
External oblique
Constricts abdomen
Fascia lata
Fascia covering thigh
Geniohyoid
Draws hyoid anteriorly
Gluteus medius
Abducts thigh
Gluteus superficialis
Abducts thigh
Hyoglossus
Depresses and retracts tongue
Intercostals
External: protracts ribs, increases thoracic diameter; Internal: retracts ribs, decreases thoracic diameter
Internal oblique
Constricts abdomen
Latissimus dorsi
Draws humerus posterodorsally
Infraspinatus
Rotates humerus laterally
Levator scapulae ventralis
Draws scapula anteriorly
Longissimus capitis
Flexes head laterally
Masseter
Elevates mandible
Mylohyoid
Elevates floor of oral cavity; draws hyoid anteriorly
Pectoantebrachialis
Adducts humerus
Pectoralis major
Adducts humerus
Pectoralis minor
Adducts humerus
Rectus abdominis
Compresses abdomen; draws ribs and sternum posteriorly, flexing the trunk
Rhomboideus
Draws scapula toward vertebral column
Rhomboideus capitis
Rotates and draws scapula anteriorly
Sartorius
Adducts thigh, contributes to the extension of the crus
Scalenus
Flexes neck; or draws ribs anteriorly
Semimembranosus
Extends thigh, flexes crus
Semispinalis
Elevates head
Semitendinosus
Flexes crus, extends thigh
Serratus dorsalis caudalis
Draws ribs posteriorly
Serratus dorsalis cranialis
Draws ribs anteriorly
Serratus ventralis
Draws scapula anteroventrally
Spinodeltoid
Flexes and laterally rotates humerus
Spinotrapezius
Draws scapula posterodorsally
Splenius
Acting singly: flexes head laterally; Acting with other side splenius: elevates head
Sternohyoid
Draws hyoid posteriorly
Sternomastoid
Acting singly: flexes neck laterally; acting with other side sternomastoid: depresses snout
Sternothyroid
Draws larynx posteriorly
Styloglossus
Elevates and retracts tongue
Supraspinatus
Extends humerus
Sylohyoid
Draws basihyoid dorsally
Temporalis
Elevates mandible
Tensor fasciae latae
Flexes thigh
Tenuissimus
May serve as a tension sensor; effectiveness as thigh extensor or crus flexor probably minimal
Teres major
Flexes and medially rotates humerus
Teres minor
Flexes and laterally rotates humerus
Transversus abdominus
Constricts abdomen
Triceps brachii
Extend antebrachium
Xiphihumeralis
Adducts forelimb
Vastus medialis
Extends crus
Gracilis
Adducts thigh, flexes crus
Pectineus
Adducts thigh
Adductor longus
Adducts and flexes thigh
Adductor femoris
Adducts and extends thigh
Gluteus profundus
Abducts and outwardly rotates thigh
gluteofemoralis
Abducts thigh and extends crus
Gastrocnemius
Extends pes, flexes crus
Soleus
Extends pes
Extensor digitorum longus
Extends digits 2 to 5 and flexes pes
Tibialis anterior
flexes pes
Tibialis posterior
extends pes
Calcaneal tendon
Achilles; insertion of gastrocnemius and soleus
Plantaris
Extends pes (and through flexor digitum brevis, flexes digits 2 to 5)
Flexor digitorum longus
Flexes digits 2 to 5 and extends pes
Flexor hallucis longus
Flexes digits 2 to 5 and extends pes