Muscular System

Question 1

OIR of MYLOHYOID

Answer 1

Inner side of lower jaw, Tendon of median line, Raises floor of mouth

Question 2

OIR of SUBMENTAL

Answer 2

Chin, Tendon of median line, Pushes tubercle on lower jaw against premaxilla to close external nares in respiration

Question 3

OIR of GENIOHYOID

Answer 3

Narrow and found on the Front middle of jaw, Pulls hyoid forward, lifts floor of mouth in respiration

Question 4

OIR of STERNOHYOID

Answer 4

Broad and found on the median of neck, Ventral side of hyoid, Bulges hyoid ventrally, depresses a floor of mouth in breathing

Question 5

OIR of HYOGLOSSUS

Answer 5

Posterior process of hyoid Two hyglossus muscle join, run to chin, and to tongue, Retracts or withdraws tongue

Question 6

OIR of GENIOGLOSSUS

Answer 6

Lower jaw, behind
submental, In tongue,
Protracts or extend tongue

Question 7

OIR of PETROHYOID

Answer 7

Prootic crest, Fanlike on sides of hyoid and midline of pharynx,
Raise hyoid in respiration and swallowing

Question 8

OIR of DEPRESSOR MANDIBULI

Answer 8

Behind tympanic ring,
Mandible,
Opens mouth

Question 9

OIR of TEMPORAL

Answer 9

On the side of the skull between the eye and tympanic ring, Near posterior of the lower, jaw Closes mouth

Question 10

OIR of MASSETER

Answer 10

Below temporal, Lower jaw; behind temporal
Like the temporal,

Question 11

OIR of DELTOID

Answer 11

On clavicle and scapula, deltoid crest of humerus,
Draws arm forward

Question 12

OIR of STERNORADIALES

Answer 12

Episternum (between clavicles), From proximal part of radius; by tendon, Flexes forearm

Question 13

OIR of PECTORALIS

Answer 13

Sternum, coracoid, and rectus
abdominis muscle, Converges to deltoid crest on the
humeru, Flexes arm; also expands
abdomen by compressing viscera
in thorax

Question 14

OIR of TRICEPS BRANCHII

Answer 14

Dorsal side of upper arm, extends forearm

Question 15

Name of Abs

Answer 15

RECTUS ABDOMINIS

Question 16

OIR of OBLIQUUS EXTERNUS

Answer 16

Dorsal fascia, Linea Alba; dorsal to rectum
abdominis, Support and compresses
abdomen; also compresses the lungs

Question 17

A line of tissue that splits the ventral muscles of the fro

Answer 17

Linea alba

Question 18

It is found on the posterior of the dorsal fascia and holds down the dorsal skin

Answer 18

CUTANEOUS ABDOMINIS

Question 19

Thin sheet beneath obliquus externus; fibers run laterally and antero-ventrally

Answer 19

TRANSVERSUS

Question 20

OIR of DORSALIS SCAPULAE

Answer 20

Scapula, By tendon joining that of latissimus
dorsi, Raises arm toward the body

Question 21

OIR of LATISSIMUS DORSI

Answer 21

Dorsal fascia, On humerus.
Raises arm upward and backward

Question 22

OIR of LONGISSIMUS DORSI

Answer 22

On Urostyle, Vertebrae and skull
Straighten back; raises head

Question 23

OIR of COCCYGEO-SACRALIS

Answer 23

Upper lateral of Urostyle, It turns and raises the back

Question 24

OIR of COCCYGEO-ILIACUS

Answer 24

Lower lateral of Urostyle, holds urostyle in place

Question 25

OIR of GLUTEUS

Answer 25

On the Ilium, draws thigh upward and forward

Question 26

OIR of PYRIFORMIS

Answer 26

Posterior tip of urostyle; above anus, Medial surface of femur, Raises thigh

Question 27

OIR of TRICEPS FEMORIS

Answer 27

Top of Thigh, Tibio-fibula; proximally by knee
tendon, Draws thigh against trunk; also
extends shank.

Question 28

OIR of BICEPS FEMORIS

Answer 28

Middle of Thigh; Below TRICEPS FEMORIS, same function as TRICEPS FEMORIS

Question 29

OIR of SEMIMEMBRANOUS

Answer 29

Bottom of Thigh, Posterior head of tibio-fibula, Flexes shank

Question 30

OIR of GRACILIS MINOR

Answer 30

Edge of Ischium, Inner side of tibio-fibula below the
head, Flexes shank ; adducts thigh

Question 31

OIR of GRACILIS MAJOR

Answer 31

Ventral mid-thigh, Inner side of tibio-fibula below the
head, Flexes shank ; adducts thigh

Question 32

OIR of SARTORIUS

Answer 32

Between TRICEPS FEMORIS and GRACILIS MAJOR, Inner head of tibio-fibula, Flexes shank ; adduct thigh

Question 33

OIR of ADDUCTOR MAGNUS

Answer 33

Between SARTORIUS and GRACILIS MAJOR, Femur,
Adducts thigh and leg.

Question 34

OIR of ADDUCTOR LONGUS

Answer 34

Ilium, With adductor magnus, Same as adductor magnus

Question 35

OIR of SEMITENDINOUS

Answer 35

Ischium by two heads, With gracilis minor on posterior
end of tibio- fibula, Adducts thigh and flexes shank

Question 36

Name of Calf

Answer 36

GASTROCNEMIUS which extends the foot and flexes the shank

Question 37

OIR of PERONEOUS

Answer 37

Knee tendon, Tibio-fibula ; distally and ankle,
Draw shank against thigh ; also extends
or twist foot

Question 38

OIR of Tibialis anticus longus

Answer 38

Distal end of femur by long tendon, Two heads to proximal ends of astragalus and calcaneum,
Flexes ankle

Question 39

OIR of Tibialis posticus

Answer 39

Along entire tibio-fibula, Astraglus, Flexes and twist ankle

Question 40

OIR of EXTENSOR CRURIS

Answer 40

Medial end of femur, Middle part of tibio-fibula, Extends shank

Question 41

Function of Biceps and Triceps

Answer 41

BICEPS – rotate forearms and helps in the movement of elbow and shoulder

TRICEPS – it also helps in the movement of the elbow and shoulder as well
as extension but in the opposite direction of biceps.

Question 42

Meaning of OIR

Answer 42

• Origin is the attachment site that doesn’t move during contraction.
• Insertion is the attachment site that moves when the muscle contracts
• Action a movement of the appendage