Myology - Actions for Squalus, Necturus, and Felis

raise floor of mouth

action of first ventral constrictor/intermandibular (squalus)

compress oropharynx

action of second ventral constrictor/interhyoid (squalus)

compress oropharynx

action of 3rd-6th VENTRAL constrictors (squalus)

expands oropharynx

action of the coracobranchials (squalus)

helps elevate palatoquadrate

action of spiracular (squalus)

closes mouth

action of mandibular adductor (squalus)

compresses oropharynx

action of 3rd-6th DORSAL constrictors (squalus)

elevates palatopterygoquadrate

action of 1st levator/palatopterygoquadrate levator (squalus)

elevates hyoid

action of 2nd levator/hyoid levator (squalus)

elevates scapula

action of 3rd-6th levators/cucullaris (squalus)

helps open mouth

action of common coracoarcural (squalus)

opens mouth

Action of coracomandibular (squalus)

elevates/extends pectoral fin

action of pectoral levator (squalus)

depresses/flexes pectoral fin

action of pectoral depressor (squalus)

Laterally flexes trunk

action of dorsalis trunci (necturus)

laterally flexes trunk

action of external abdominal oblique (necturus)

laterally flexes trunk

action of internal abdominal oblique (necturus)

laterally flexes trunk

action of transversus abdominis (necturus)

ventrally flexes trunk

action of rectus abdominis (necturus)

raises lower jaw

action of anterior mandibular levator (necturus)

raises lower jaw

action of external mandibular levator (necturus)

depresses lower jaw

action of mandibular depressor (necturus)

laterally turns head

action of dorsalis trunci (necturus)

raies gills

action of branchial levators (necturus)

tenses floor of oropharynx

action of intermandibular (necturus)

tenses floor of oropharynx

action of interhyoid (necturus)

moved hyoid cranially

action of geniohyoid (necturus)

moves hyoid cranially

action of branchiohyoid (necturus)

moves hyoid cranially

action of rectus cervicis (necturus)

moves scapula craniodorsally

action of cucullaris (necturus)

move scapula cranially

action of pectoriscapularis (necturus)

abduct humerus

action of dorsalis scapulae (necturus)

move humerus caudally

action of latissimus dorsi (necturus)

move humerus cranially

action of procoracohumeralis (necturus)

adduct humerus

action of supracoracoideus (necturus)

adduct humerus

action of pectoralis (necturus)

extend forearm

action of triceps brachii (necturus)

flexes forearm

Action of humeroantebrachialis (necturus)

flexes forearm

action of coracobrachialis (necturus)

adducts femur

Action of puboischiofemoralis externus (necturus)

moves femur anteriorly

action of puboischiofemoralis internus (necturus)

adducts femur and extends leg

Action of pubotibialis (necturus)

adducts femur and flexes leg

Action of puboischiotibialis (necturus)

flexes leg and foot

Action of ischioflexorius (necturus)

extends leg

action of iliotibialis (necturus)

extends leg

Action of ilioextensorius (necturus)

extends leg

action of iliofibularis (necturus)

pulls ribs cranially

action of serratus dorsalis, cranialis (felis)

pulls ribs caudally

action of serratus dorsalis, caudalis (felis)

extends vertebral column

Action of Longissimus dorsi (felis)

extends vertebral column

Action of Spinalis dorsi (felis)

laterally flexes spine

action of iliocostalis (felis)

raises head dorsally

action of splenius (felis)

extends vertebral column

Action of Multifidus dorsi (felis)

twists trunk

action of external abdominal oblique (felis)

twists trunk

action of internal abdominal oblique (felis)

twists trunk

action of transversus abdominis (felis)

flexes trunk

action of rectus abdominis (felis)

laterally flexes neck

action of sternomastoid (felis)

pulls hyoid posteriorly

action of sternohyoid (felis)

depresses mandible

action of digastric (felis)

raises floor of mouth

action of mylohyoid (felis)

elevates hyoid

action of stylohyoid (felis)

elevates mandible

action of masseter (felis)

elevates mandible

action of temporalis (felis)

pulls larynx caudally

action of sternothyroid (felis)

raises larynx

action of thyrohyoid (felis)

puts tension on vocal cords

action of cricothyroid (felis)

laterally flexes neck

action of cleidomastoid (felis)

pulls mandible cranially

action of geniohyoid (felis)

retracts tongue

action of hyoglossus (felis)

retracts tongue

action of styloglossus (felis)

protracts base of tongue

action of genioglossus (felis)

dorsally raise scapula

action of clavotrapezius (felis)

dorsally raise scapula

action of acromiotrapezius (felis)

dorsally raise scapula

action of spinotrapezius (felis)

flexes forearm

action of clavobrachialis (felis)

flex and rotate humerus

action of acromiodeltoid (felis)

flex and rotate humerus

action of spinodeltoid (felis)

raises scapula cranially

Action of levator scapulae ventralis (felis)

Pulls arms caudodorsally

action of latissimus dorsi (felis)

pulls scapula dorsally

action of rhomboideus major and rhomboideus minor (felis)

pulls scapula cranially

action of rhomboideus capitis (felis)

extends humerus

action of supraspinatus (felis)

laterally rotates humerus

action of infraspinatus (felis)

medially rotates humerus

action of teres major (felis)

laterally rotates humerus

action of teres minor (felis)

adducts forelimb

Action of Pectoantebranchialis (felis)

adducts forelimb

action of pectoralis major and pectoralis minor (felis)

adducts forelimb

action of xiphihumeralis (felis)

pulls scapula ventrally

action of serratus ventralis (felis)

raises scapula cranially

action of levator scapula (felis)

flexes neck

action of scalenus (felis)

expands ribcage

action of external intercostal (felis)

compresses ribcage

action of internal intercostal (felis)

extends forearm

action of triceps brachii (felis)

extends forearm

action of anconeus (felis)

extends forearm

Action of Epitrochlearis (felis)

flexes forearm

action of brachialis (felis)

flexes forearm

action of biceps brachii (felis)