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Shark Muscle Insertions and Origins
Shark muscle insertions, origins, and functions
25
Biology
Undergraduate 3
05/01/2014

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Term
pectoral extensors
Definition
Origin:scapular process and adjacent fascia

Insertion: radials and ceratotrichia

Function:elevates pectoral fin
Term
pectoral flexors
Definition
Origin:coracoid bar

Insertion:radials and ceratotrichia

Function: depresses pectoral fin
Term
pelvic extensors superficial part
Definition
Origin: iliac process of puboischiac bar

Insertion:radials and ceratotrichia

Function:elevates pelvic fin
Term
pelvic extensors deep part
Definition
Origin: metapterygium

Insertion:radials and ceratotrichia

Function:elevates pelvic fin
Term
pelvic flexors proximal part
Definition
Origin:linea alba and puboshiac bar

Insertion:metapterygium

Function:depresses pelvic fin
Term
pelvic flexors distal part
Definition
Origin:metapterygium

Insertion:radials and ceratotrichia

Function:Function:depresses pelvic fin
Term
adductor mandibulae
Definition
Origin:posterior part of the palatoquadrate cartilage

Insertion:Meckel's cartilage

Function:closes mouth
Term
dorsal and ventral constrictors 3-6
Definition
Origin:vertical raphe

Insertion:vertical raphe

Function:compresses gill pouches
Term
interhyoideus
Definition
Origin: midventral raphe

Insertion:certohyal

Function:compresses gill pouches
Term
intermandibularis
Definition
Origin:Meckel's cartilage and fascia of the adductor mandibulae

Insertion:midventral raphe

Function:raises the floor of the mouth
Term
levator hyomandibulae
Definition
Origin:otic capsule

Insertion:hyomandibular

Function:compresses gill pouches
Term
preorbitals
Definition
Origin: midventral surface of the chondrocranium

Insertion:adductor mandibulae

Function:closes the mouth
Term
spiracularis
Definition
Origin: otic capsule

Insertion:palatoquadrate cartilage

Function:elevates the palatoquadrate
Term
cucullaris
Definition
Origin:dorsal longitudinal bundle fascia

Insertion:epibranchial cartilage an scapular process

Function:elevates the gill arches and pectoral girdle
Term
interarcuals
Definition
Origin:pharyngobranchials

Insertion:epibranchials

Function:expands the pharynx
Term
levator palatoquadrati
Definition
Origin:otic capsule

Insertion:palatoquadrate cartilage

Function:raises the upper jaw
Term
common coracoarcuals
Definition
Origin:coracoid bar

Insertion:coracohyoid

Function:opens the mouth
Term
coracomandibularis
Definition
Origin:fascia of common coracoarcuals

Insertion:Meckel's cartilage

Function:opens the mouth
Term
coracohyoid
Definition
Origin:common coracoarcuals

Insertion:basihyal

Function:opens the mouth
Term
inferior oblique
Definition
Origin: anterior end of orbit

Insertion:ventral side of eyeball

Function: rotates eye ventrally
Term
inferior rectus
Definition
Origin: posterior end of orbit

Insertion:ventral side of eyeball

Function: rotates eye ventrally
Term
lateral rectus
Definition
Origin: posterior end of orbit

Insertion:lateral side of eyeball

Function: rotates eye posteriorly
Term
medial rectus
Definition
Origin: posterior end of orbit

Insertion:medial side of eyeball

Function: rotates eye cranially
Term
superior oblique
Definition
Origin: anterior end of orbit

Insertion:dorsal side of eyeball

Function: rotates eye dorsally
Term
superior rectus
Definition
Origin: posterior end of orbit

Insertion:dorsal side of eyeball

Function: rotates eye dorsally
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