Bio 22 Post-Lab - The Muscular System (New Ver.)

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Transcript of Bio 22 Post-Lab - The Muscular System (New Ver.)

DORSAL SIDE

VENTRAL SIDE

MUSCLES OF THE FLOOR OF THE MOUTH AND TONGUESubmental Genohyoid Hyoglossus Myohoid

MyohoidOrigin: inner side of the lower jaw Insertion: tendon in median line Action: raises the floor of the mouth for breathing

SubmentalOrigin: anterior end of the mandible Insertion: tendon in mid-line Action: pushes sublingual tubercle on lower jaw

HyoglossusOrigin: hyoid Insertion: tongue Action: retracts of withdraws tongue forward

GenohyoidOrigin: dorsally on coracoid and clavicle Insertion: ventral side of the hyoid Action: bulges hyoid ventrally

LOWER JAWMasseter

Temporalis

Depressor Mandibuli

Depressor MandibuliOrigin: posterior edge of the tympanic ring via dorsal fascia Insertion: posterior-most end of the lower jaw Action: opens the mouth

TemporalisOrigin: side of the skull between eye and tympanic ring Insertion: near posterior end of the lower jaw Action: closes the mouth

MasseterOrigin: tympanic ring and adjacent bones Insertion: lower jaw, behind temporal Action: closes the mouth

PECTORAL GIRDLE, SHOULDERS, AND ARMS*Cutaneous Pectoralis Sterno-radialis Deltoid Pectoralis Epicoracoidea Pectoralis Sternalis Pectoralis Abdominis

Pectoralis EpicoracoideaOrigin: coracoid and epicoracoid bones Insertion: anterior end of the humerus Action: draws arms towards the chest/adduction of arms

DeltoidOrigin: clavicle, scapula, and omosternum Insertion: deltoid crest of humerus Action: draws arm forward

Pectoralis SternalisOrigin: xiphisternum Insertion: anterior end of the humerus Action: draws arms towards the chest

Sterno-radialisOrigin: episternum Insertion: proximal part of the radius by tendon Action: flexes forearm and the humerus

Pectoralis AbdominisOrigin: anterior half of the rectus abdominis Insertion: anterior end of the humerus Action: draws arms towards the chest

ABDOMINAL WALLRectus Abdominis External Oblique Transversus

External ObliqueOrigin: dorsal fascia Insertion: linea alba dorsal to the previous muscle Action: compressor of the abdomen and respiratory muscle

Rectus AbdominisOrigin: pubis Insertion: dorsally on sternum and coracoid Action: supports the abdomen, holds the sternum

TransversusOrigin: transverse process of the 4th to 9th vertebrae and the iliac bone Insertion: coracoid and xiphisternum Action: same with the external oblique

BACK AND PELVIC GIRDLEDorsalis ScapulaeLatissimus Dorsi Longissimus Dorsi Ilio-lumbaris Coccygeoiliacus

CoccygeosacralisGluteus

Dorsalis ScapulaeOrigin: scapula Insertion: tendon joining the latissimus dorsi Action: raises arm towards body

Ilio-lumbarisOrigin: anterior end of the ilium Insertion: transverse process of the sacral vertebra Action: extensor of the back

Latissimus DorsiOrigin: dorsal fascia Insertion: on deltoid crest Action: raises arm dorsally

Coccygeo-sacralisOrigin: periphery of the urostyle Insertion: transverse process of the 9th sacral vertebra Action: singly turns the back and raises it

Longissimus DorsiOrigin: urostyle Insertion: vertebrae and the back of the skull Action: straightens the back and raises the head

Coccygeo-iliacusOrigin: periphery of the urostyle Insertion: anterior part of the ileum Action: holds urostyle in place

GluteusOrigin: middle of the lateral surface of the ileum Insertion: anterior side of head of femur Action: draws thigh forward and upward

THIGH (Dorsal)1. Gluteus2. Pyriformis 3. Triceps Femoris 4. Semimembranosus 5. Biceps Femoris

THIGH (Ventral)1. Sartorius 2. Adductor Longus 3. Adductor Magnus 4. Gracilis Major 5. Gracilis Minor 6. Semitendinosus

Triceps FemorisOrigin: pelvic girdle Insertion: front of the tibia Action: extensor of the shank

Gracilis MusclesOrigin: edge of the ischium Insertion: inner side of the tibio-fibula below the head Action: flexes shank

Biceps FemorisOrigin: crest of the ileum above the acetabulum Insertion: distal part of the femur and posterior border of the tibio-fibula Action: adducts the thigh against the trunk, also extend to the shank

SemimembranousOrigin: dorsal side of the ischium Insertion: posterior end of the tibio-fibula Action: flexes of the shank

SemitendinosusOrigin: ischium by two heads Insertion: with the gracilis minor on the proximal end of the tibio-fibula Action: adducts thigh and flexes the shank

Adductor MusclesOrigin: ischium and pubis Insertion: distal end of the femur Action: adducts thigh and leg

SHANK (Dorsal)

1. Gastrocnemius 2. Peroneus

SHANK (Ventral)1. Gastrocnemius2. Tibialis Posticus 3. Extensor Cruris

4. Tibialis AnticusLongus 5. Tibio-fibula bone

GastrocnemiusOrigin: distal end of the femur by a flat tendon, and edge of knee tendon Insertion: tendon of Achilles Action: extends the foot and flexes the shank

Tibialis PosticusOrigin: femur Insertion: calcaneal bone Action: extensor of the foot

PeroneusOrigin: knee tendon Insertion: tibio-fibula, distally by ankle Action: draws shank against the thigh and extends or twista the foot

Tibialis AnticusOrigin: femur Insertion: calcaneal bone Action: extensor of the foot

MUSCLES OF THE FLOOR OF THE MOUTH AND TONGUE

LOWER JAW

PECTORAL GIRDLE, SHOULDERS, AND ARMS

ABDOMINAL WALL

BACK AND PELVIC GIRDLE

THIGH (Dorsal)1.2. 3. 4. 5.

THIGH (Ventral)1. 2. 3. 4. 5.

6.

SHANK (Dorsal)

1. 2.

SHANK (Ventral)1.2. 3.

4.5.

Sources: http://www.animalcorner.co.uk/animalgroups/dfrogmuscle.html http://www.google.com.ph/imglanding?imgurl=http://shs.westport.k12.ct .us/mjvl/biology/dissect/frog_images/frog_muscles_dorsal.jpg&imgrefurl =http://shs.westport.k12.ct.us/mjvl/biology/dissect/frog.htm&h=1500&w =1115&sz=187&tbnid=AQvShJS0kSLXGM:&tbnh=150&tbnw=112&prev=/i mages%3Fq%3Dfrog%2Bmuscles&zoom=1&q=frog+muscles&usg=__CXMf tte77R3h9uEa3ARu-QnxBIg%3D&sa=X&ei=Z-U6TZbjB4OsrAe4PToCA&ved=0CBsQ9QEwAg http://bioweb.uwlax.edu/zoolab/lab-9b/Frog-Muscles-1.htm http://bioweb.uwlax.edu/zoolab/lab-9b/Frog-Muscles-2.htm http://bioweb.uwlax.edu/zoolab/lab-9b/Frog-Muscles-3.htm http://bioweb.uwlax.edu/zoolab/lab-9b/Frog-Muscles-4.htm