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Zology 377 Lab > Shark Muscles > Flashcards

Flashcards in Shark Muscles Deck (22)
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1

adductor mandibulae

O: caudal region and adductor mandibulae process of palatoquadrate cartilage
I: posterolateral portion of mandibular cartilage
A: adducts (closes) jaws

2

levator palatoquadrati

O: lateral portion of otic capsule
I: posterodorsal portion of palatoquadrate cartilage
A: raises palatoquadrate cartilage

3

spiracular

O: lateral portion of otic capsule
I: palatoquadrate cartilage
A: closes spiracle

4

preorbital

O: caudal end of palatoquadrate cartilage
I: ventral surface of base of rostrum
A: retracts chondrocranium during jaw closure

5

intermandibular

O: medial edge of mandibular cartilage
I: midventral raphe
A: pulls mandibular cartilage toward midline, raises floor of oropharyngeal cavity

6

interhyoid

O: ceratohyal cartilage
I: midventral raphe
A: pulls ceratohyal toward midline, raises floor of oropharyngeal cavity

7

dorsal hyoid constrictor

O: surface of cucullaris
I: tendinous plate
A: compresses gill pouch

8

ventral hyoid constrictor

O: fascia caudomedial to interhyoid
I: tendinous plate
A: compresses gill pouch

9

hyoid trematic constrictor

O: tendinous plate
I: edge of gill slit I
A: closes gill slit and compresses gill pouch I

10

levator hyomandibulae

O: surface of epibranchial musculature and otic capsule
I: hyomandibular and palatoquadrate cartilages
A: raises hyomandibular cartilage and expands gill pouches

11

cucullaris

O: surface of epibranchial musculature
I: scapulocoracoid cartilage and epibranchial cartilage of branchial arch V
A: compresses anterior cardinal sinus, elevates gill arches and pectoral girdle

12

dorsal superficial branchial constrictor

O: vertical raphe
I: vertical raphe
A: compresses gill pouches

13

ventral superficial branchial constrictor

O: vertical raphe
I: vertical raphe
A: compresses gill pouches

14

coracomandibular

O: caudal surface of coracoarcuals
I: symphysis of mandibular cartilages
A: opens mouth

15

coracoarcual

O: coracoid bar of scapulocoracoid cartilage
I: coracohyoid
A: opens mouth

16

coracohyoid

O: coracoarcuals
I: basihyal cartilage
A: opens mouth

17

pectoral dorsal superficial fin muscle

O: connective tissue covering dorsal longitudinal bundle of hypaxial musculature caudal to scapulocoracoid cartilage
I: radial cartilages of pectoral fin
A: abducts pectoral fin

18

cranial fin muscle

O: lateral surface of scapulocoracoid cartilage
I: propterygium
A: protracts pectoral fin

19

pectoral ventral fin muscle

O: caudal surface and process of scapulocoracoid cartilage
I: radial cartilages of pectoral fin
A: adducts pectoral fin

20

pelvic dorsal fin muscle

O: iliac process of puboischiadic bar, metapterygium
I: radial cartilages of pelvic fin
A: abducts pelvic fin

21

pelvic ventral fin muscle, proximal portion

O: puboischiadic bar
I: metapterygium
A: adducts pelvic fin

22

pelvic ventral fin muscle, distal portion

O: metapterygium
I: radial cartilages of pelvic fin
A: adducts pelvic fin