Shark muscles: origin, insertion, function Flashcards Preview

Comparative Vertebrate Anatomy > Shark muscles: origin, insertion, function > Flashcards

Flashcards in Shark muscles: origin, insertion, function Deck (14):
1

Pectoral extensors

Origin: scapular process and adjacent fascia
Insertion radials and ceratotrichia
Function: elevates pectoral fin

2

Pectoral flexors

Origin: coracoid bar
Insertion: radials and ceratotrichia
Function: depresses pectoral fin

3

Pelvic extensors

Origin: Iliac process, metapterygium
Insertion: radials and ceratotrichia
Function: elevates pelvic fin

4

Pelvic flexors

Origin: linea alba and pubioschiac bar, metapterygium
Insertion: metapterygium, radials and ceratotrichia
Function: depresses pelvic fin

5

Adductor mandibulae

Origin: posterior part of platoquadrate cartilage
Insertion: Meckel's cartilage
Function: closes mouth

6

Dorsal and ventral constrictors

Origin: vertical raphe
Insertion: vertical raphe
Function: compresses gill pouches

7

Interhyoideus

Origin: midventral raphe
Insertion: ceratohyal
Function: compresses gill pouches

8

Intermandibularis

Origin: meckel's cartilage and fascia of adductor mandibulae
Insertion: midventral raphe
Function: raises floor of mouth

9

Levator hyomandibulae

Origin: otic capsule
Insertion: hyomandibular
Function: compresses gill pouches

10

Cucullaris

Origin: dorsal longitudinal bundle fascia
Insertion: epibranchial cartilage and scapular process
Function: elevates gill arches and pectoral girdle

11

Levator palatoquadrati

Origin: otic capsule
Insertion: palatoquadrate cartilage
Function: raises upper jaw

12

Common coracoarculas

Origin: coracoid bar
Insertion: coracohyoid
Function: opens mouth

13

Coracomandibularis

Origin: fascia of common coracoarcuals
Insertion: meckel's cartilage
Function: opens mouth

14

Coracohyoid

Origin: common coracoarcuals
Insertion: basihyal
Function: opens mouth