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Chpt 2: H & I
Pig Discetion: Muscles
10
Biology
12th Grade
01/18/2013

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Term
Splenius
Definition
Muscle that helps raise the head or helps turn the head to the side.
Term
Masseter
Definition
Large muscle arising from the ventral margin of the zygomatich arch and inserting on the mandible.
Term
Digastric
Definition
Muscle along the mandible; it is a major jaw opening muscle.
Term
Obliquus Externus
Definition
Superficial muscle layer extending cranially to the fourth rib; its muscle fibers run from craniolateral to craniomedial.
Term
Mylohyoid
Definition
The thin sheet of transverse muscle fibers forming part of the floor of the mouth; it raises the floor of the mouth and assists in swallowing.
Term
Temporal
Definition
Muscle arising from the temporal fossa of the skull and passing deep to the zygomatic arch; it inserts on the mandible.
Term
Obliquus Internus
Definition
Muscle lying directly under the obliquus externus.
Term
Intercostalis Internus
Definition
Muscle beneath the intercostalis externus; it has muscle fibers running at right angles to the intercostalis externus.
Term
Intercostalis Externus
Definition
Muscle fiber extending between the two ribs.
Term
Rectus Abdominis
Definition
Longitudinal muscle band arising from the fourth rib cartilage; it attaches caudally to the pubis.
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