Frog muscles: origin, insertion, function Flashcards Preview

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

Flashcards in Frog muscles: origin, insertion, function Deck (28):
1

Pectoralis

Origin: sternum, anterior coracoid, and fascia of rectus abdominis
Insertion: humerus
Function: adducts, rotates, and flexex forelimb

2

Rectus abdominis

Origin: public border
Insertion: dorsal surface of episternum
Function: flexes trunk

3

Latissimus dorsi

Origin: dorsal conenctive tissue
Insertion: humerus
Function: retracts forelimb

4

Dorsalis scapulae

Origin: suprascapula
Insertion: humerus
Function: protracts forelimb

5

Rhomboideus

Origin: dorsal midline
Insertion: ventral surface of suprascapula
Function: stabilizes suprascapulae

6

Longissimus dorsi

Origin: urostyle
Insertion: posterior portion of skull and anterior vertebrae
Function: extends pelvic area

7

Depressor mandibulae

Origin: squamosal
Insertion: posterior portion of angulosplenial
Function: depresses mandible

8

Temporalis

Origin: frontoparietal
Insertion: coronoid process
Function: elevates mandible

9

Masseter

Origin: frontoparietal
Insertion: coronoid process
Function elevates mandible

10

Intermandibularis

Origin: mandible
Insertion: median raphe
Function: elevates the throat

11

Interhyoideus

Origin: fascia of drepressor mandibulae
Insertion: median raphe
Function: elevates throat

12

Geniohyoideus

Origin: mandibular symphysis
Insertion: hyoid
Function: depresses mandible and pulls hyoid apparatus anteriorly

13

Sternohyoideus

Origin: sternum
Insertion: hyoid
Function: retracts hyoid

14

Deltoideus

Origin: sternum, clavicle, scapula
Insertion: proximal portion of humerus
Function: protraction and adduction of forearm

15

Triceps brachii

Origin: two heads from humerus and one from scapula
Insertion: ulna
Function: extends forearm

16

Flexors and extensors

flexors located on the ventral surface of the forearm while the extemsors are located on the dorsal surface of the forearm, both interact with the forelimb

17

Iliacus externus

Origin: ilium
Insertion: proximal end of femur
Function: protract and rotate the hindlimb

18

Triceps femoris

Origin: ilium and acetabulum
Insertion: proximal end of tibiofibula
Function: extends lower limb and assists in protraction of thigh

19

Iliofibularis

Origin: pelivc girdle
Insertion: proximal end of tibiofibula
Function: flexes lower hindlimb and assists in retraction and abduction of thigh

20

Sartorius

Origin: pelvic girdle
Insertion: proximal end of tibiofibula
Function: flexes lower hindlimb, adducts and protracts thigh

21

Adductor Magnus

Origin: pelvic girdle
Insertion: distal one third of femur
Function: adducts thigh

22

Adductor longus

Origin: pelvic girdle
Insertion: distal end of femur
Function: adducts thigh

23

Pectineus

Origin: pelvic girdle
Insertion proximal end of femur
Function: adducts thigh

24

Gracilis major and minor

Origin: pelvis
Insertion: proximal end of tibiofibula
Function: flexes lower limb and retracts and adducts thigh

25

Semimembranosus

Origin: pelvic girdle
Insertion: proximal end of tibiofibula
Function: extends lower hindlimb and assists in retraction and adduction of thigh

26

Semitendinosus

Origin: pelvic girdle
Insertion: proximal end of tibiofibual
Function: flexes lower hindlimb and retracts thigh

27

Gastrocnemius

Origin: distal end of femur
Insertion: plantar aponeurosis by the way of the achilles tendon
Function: extends foot and flexes toes

28

Peroneus

Origin: distal end of femur
Insertion: proximal tarsals
Action: flexes foot