Muscular System Flashcards
What are the muscles of the floor of the mouth and tongue?
- mylohyoid
- submental
- geniohyoid
- sternohyoid
- hyoglossus
- genioglossus
- petrohyoid
Broad sheet across the lower jaw
Mylohyoid
Tip of lower jaw, fibers transverse
Submental
Narrow and fibers lengthwise.
Geniohyoid
Broad. Under the sternum, particularly the episternum
Sternohyoid
Narrow that functions to retract or withdraw the tongue
Hyoglossus
Small and thick that protract or extends the tongue.
Genioglossus
Four and small that are fanlike sides of the hyoid.
Petrohyoid
What are the muscles of the lower jaw?
- Depressor mandibuli
- Temporal
- Masseter
Behind tympanic ring; tapered
Depressor Mandibuli
Its origin is side of skull between eye and tympanic ring
Temporal
Short and its origin is tympanic ring and adjacent bones
Masseter
What are the muscles of the pectoral girdle and arm
- Deltoid
- Sternoradiales
- Pectoralis
- Triceps branchii
- Rectus Abdominis
- Obliquus Externus
- Cutaneous Abdominis
- Transversus
-Dorsalis Scapulae - Latissimus Dorsi
- Longissimus Dorsi
- Coccygeo-sacralis
- Coccygeo-iliacus
- Gluteus
- Pyriformis
Anterior border of upper arm
Deltoid
Fan-shaped that functions in flexing the forearm.
Sternoradiales
Large, fan-shaped; of four parts
Pectoralis
Dorsal side of upper arm. That has three heads
Triceps branchii
Thin lengthwise sheet behind the mid-ventral line (the whitish linen alba, of connective) divided transversely by tendinous bars
Rectus Abdominis
Thin sheet over entire side of body
Obliquus Externus
Slender that holds down the dorsal skin
Cutaneous Abdomonis
Thin sheet beneath obliquus externus; fibers run laterally and anteroventrally
Transversus
Triangular that raises the arm towards the body
Dorsalis Scapulae
Narrowly tapered where its origin is dorsal fascia
Latissimus Dorsi
Along back. Long and slender, with transverse septa.
Longissimus Dorsi
Narrow, Fibers diagonal. Its action is singly, turns back, both muscles, raises back,
Coccygeo-sacralis
Narrow, fibers diagonal and holds urostyle in place.
Coccgeo-iliacus
Short, stout and draws the thigh forward and upward
Gluteus
Short, slender that raises the thigh
Pyriformis
What are the muscles of the thigh
- Triceps Femoris
- Ileofibularis
- Semimembranous
- Gracilis Minor
- Gracilis Major
- Sartorious
- Adductor Magnus
- Adductor Longus
- Semitendinous
Large, covers entire anterior boarder of the thigh, both dorsally and
ventrally.
Triceps femoris
Semitendinous
Long, that adducts thigh and flexes shank
Thin, oblique band, across ventral surface of thigh
Sartorious
Slender. Flat. attaches to the skin
Gracilis Minor
Runs from the pelvis to the knee aponeurosis and the proximal cruris.
Gracilis Major
Long, slender where its origin is crest of ilium.
Ileofibularis
Large that adducts thigh and leg
Adductor Magnus
Long and action is adducts the thigh and flexes shank.
Semitendinous
Narrow which origin is Ilium, anterior symphysis
Adductor Longus
Muscles of the shank
- Gastrocnemius
- Peroneous
- Tibialis (Anticulus longus and posticus)
- Extensor Cruris
Large, posterior forms “calf” of leg
Gastrocnemius
Is stout and its action is to draw the shank against the thigh and also extends or twists the foot
Peronious
Group of three muscles next to the tibio-fibula
tibialis
Small which origin is medial end of femur
Extensor cruris
is the attachment site that doesn’t move during contraction
Origin
A movement of the appendage Action
Action
Attachment site that moves when the muscle contracts
Insertion
