Origin, Insertion, and Function of the Shark

Question 1

Adductor mandibulae

Answer 1

Origin: palatoquadrate clartilage

Insertion: Meckel’s Cartilage

Function: closes the mouth

Question 2

dorsal and ventral constrictors 3-6

Answer 2

origin: Vertical raphe
insertion: vertical raphe
function: compresses gill pouches

Question 3

interhyoideus

Answer 3

origin: midventral raphe
insertion: ceratohyal
function: compresses gill pouches

Question 4

intermandibularis

Answer 4

origin: Meckel’s cartilage and fascia of the adductor mandibulae
insertion: midventral raphe
function: raises the floor of the mouth

Question 5

levator hyomandibulae

Answer 5

origin: otic capsule
insertion: hyomandibular

Function: compresses gill pouches

Question 6

preorbitalis

Answer 6

origin: midventral surface of the chondrocranium
insertion: adductor mandibulae
function: closes the mouth

Question 7

spiracularis

Answer 7

origin: otic capsule
insertion: palatoquadrate cartilage

Function: elevates the palatoquadrate

Question 8

cucullaris

Answer 8

origin: dorsal longitudinal bundle fascia
insertion: epibranchial cartilage and scapular process
function: elevates the gill arches and pectoral girdle

Question 9

interarcuals

Answer 9

origin: pharyngobranchials
insertion: epibranchials
function: expands the pharynx

Question 10

levator palatoquadrati

Answer 10

origin: otic capsule
insertion: palatoquadrate cartilage
function: raises the upper jaw

Question 11

common coracoarcuals

Answer 11

origin: coracoid bar
insertion: coracohyoid
function: opens mouth

Question 12

pectoral extensors

Answer 12

origin: scapular process and adjacent fascia
insertion: radials and ceratotrichia
function: elevates pectoral fin

Question 13

pectoral flexors

Answer 13

origin: coracoid bar
insertion: radials and ceratotrichia
function: depresses pectoral fin

Question 14

pelvic extensors

superficial and deep parts

Answer 14

Superficial: origin: illiac processof puboischiac bar

insertion: radials and ceratotrichia
function: elevates pelvic fin

Deep:

Origin: metapterygium

insertion: radials and ceratotrichia
function: elevates pelvic fin

Question 15

pelvic flexors

proximal part

distal part

Answer 15

proximal part origin: linea alba and puboischiac bar

insertion: metapterygium
function: depresses pelvic fin

distal part origin: metaperygium

insertion: radials and ceratotrichia
function: depresses pelvic fin

Question 16

coracomandibularis

Answer 16

origin: fascia of common coracoarculas

Insertion: Meckel’s cartilage

Function: opens mouth

Question 17

Coracohyoid

Answer 17

Origin: Common coracoarculas (fascia of common coracoarculas)

Insertion: basihyal

Function: opens the mouth