Bio 22 Post-Lab - The Muscular System (New Ver.)
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Transcript of Bio 22 Post-Lab - The Muscular System (New Ver.)
The Muscular System
Christian BueranoAbby CortezWindale delos SantosMelizza SorianoArah Sacdalan
DORSAL SIDE
VENTRAL SIDE
MUSCLES OF THE FLOOR OF THE MOUTH AND TONGUE
Genohyoid
Hyoglossus
Myohoid
Submental
Origin: inner side of the lower jawInsertion: tendon in median lineAction: raises the floor of the mouth for breathing
Myohoid
Submental
Origin: anterior end of the mandibleInsertion: tendon in mid-lineAction: pushes sublingual tubercle on lower jaw
Genohyoid
Origin: dorsally on coracoid and clavicleInsertion: ventral side of the hyoidAction: bulges hyoid ventrally
Hyoglossus
Origin: hyoidInsertion: tongueAction: retracts of withdraws tongue forward
LOWER JAW
Masseter
Depressor Mandibuli
Temporalis
Depressor Mandibuli
Origin: posterior edge of the tympanic ring via dorsal fasciaInsertion: posterior-most end of the lower jawAction: opens the mouth
Temporalis
Origin: side of the skull between eye and tympanic ringInsertion: near posterior end of the lower jawAction: closes the mouth
Masseter
Origin: tympanic ring and adjacent bonesInsertion: lower jaw, behind temporalAction: closes the mouth
PECTORAL GIRDLE, SHOULDERS, AND ARMS
Sterno-radialis Deltoid
PectoralisEpicoracoidea
Pectoralis Sternalis
Pectoralis Abdominis
*Cutaneous Pectoralis
Origin: coracoid and epicoracoid bonesInsertion: anterior end of the humerusAction: draws arms towards the chest/adduction of arms
Pectoralis Epicoracoidea
Pectoralis Sternalis
Origin: xiphisternumInsertion: anterior end of the humerusAction: draws arms towards the chest
Pectoralis Abdominis
Origin: anterior half of the rectus abdominisInsertion: anterior end of the humerusAction: draws arms towards the chest
Deltoid
Origin: clavicle, scapula, and omosternumInsertion: deltoid crest of humerusAction: draws arm forward
Sterno-radialis
Origin: episternumInsertion: proximal part of the radius by tendonAction: flexes forearm and the humerus
ABDOMINAL WALL
External Oblique
Transversus
Rectus Abdominis
External Oblique
Origin: dorsal fasciaInsertion: linea alba dorsal to the previous muscleAction: compressor of the abdomen and respiratory muscle
Rectus Abdominis
Origin: pubisInsertion: dorsally on sternum and coracoidAction: supports the abdomen, holds the sternum
Transversus
Origin: transverse process of the 4th to 9th vertebrae and the iliac boneInsertion: coracoid and xiphisternumAction: same with the external oblique
BACK AND PELVIC GIRDLE
Ilio-lumbaris
Dorsalis Scapulae
Latissimus Dorsi
Longissimus Dorsi
Gluteus
Coccygeo-iliacus Coccygeo-
sacralis
Origin: scapulaInsertion: tendon joining the latissimus dorsiAction: raises arm towards body
Dorsalis Scapulae
Latissimus Dorsi
Origin: dorsal fasciaInsertion: on deltoid crestAction: raises arm dorsally
Longissimus Dorsi
Origin: urostyleInsertion: vertebrae and the back of the skullAction: straightens the back and raises the head
Ilio-lumbaris
Origin: anterior end of the iliumInsertion: transverse process of the sacral vertebraAction: extensor of the back
Coccygeo-sacralis
Origin: periphery of the urostyleInsertion: transverse process of the 9th sacral vertebraAction: singly turns the back and raises it
Coccygeo-iliacus
Origin: periphery of the urostyleInsertion: anterior part of the ileumAction: holds urostyle in place
Gluteus
Origin: middle of the lateral surface of the ileumInsertion: anterior side of head of femurAction: draws thigh forward and upward
THIGH (Dorsal)
1. Gluteus
2. Pyriformis
3. Triceps Femoris
4. Semimembranosus
5. Biceps Femoris
1. Sartorius
2. Adductor Longus
3. Adductor Magnus
4. Gracilis Major
5. Gracilis Minor
6. Semitendinosus
THIGH (Ventral)
Origin: pelvic girdleInsertion: front of the tibiaAction: extensor of the shank
Triceps Femoris
Biceps Femoris
Origin: crest of the ileum above the acetabulumInsertion: distal part of the femur and posterior border of the tibio-fibulaAction: adducts the thigh against the trunk, also extend to the shank
Semimembranous
Origin: dorsal side of the ischiumInsertion: posterior end of the tibio-fibulaAction: flexes of the shank
Gracilis Muscles
Origin: edge of the ischiumInsertion: inner side of the tibio-fibula below the headAction: flexes shank
Semitendinosus
Origin: ischium by two headsInsertion: with the gracilis minor on the proximal end of the tibio-fibulaAction: adducts thigh and flexes the shank
Adductor Muscles
Origin: ischium and pubisInsertion: distal end of the femur Action: adducts thigh and leg
SHANK (Dorsal)
1. Gastrocnemius
2. Peroneus
SHANK (Ventral)
1. Gastrocnemius
2. Tibialis Posticus
3. Extensor Cruris
4. Tibialis Anticus
Longus
5. Tibio-fibula bone
Origin: distal end of the femur by a flat tendon, and edge of knee tendonInsertion: tendon of AchillesAction: extends the foot and flexes the shank
Gastrocnemius
Peroneus
Origin: knee tendonInsertion: tibio-fibula, distally by ankleAction: draws shank against the thigh and extends or twista the foot
Tibialis Anticus
Origin: femurInsertion: calcaneal boneAction: extensor of the foot
Tibialis Posticus
Origin: femurInsertion: calcaneal boneAction: extensor of the foot
QUIZ
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.
1.
2.
3.
4.
5.
6.
THIGH (Ventral)
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=/images%3Fq%3Dfrog%2Bmuscles&zoom=1&q=frog+muscles&usg=__CXMftte77R3h9uEa3ARu-QnxBIg%3D&sa=X&ei=Z-U6TZbjB4OsrAe4-PToCA&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
GOODLUCK!