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CHAPTER 11 THE MUSCULAR SYSTEM
THE MUSCULAR SYSTEM
17
Anatomy
Undergraduate 1
04/02/2012

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Term
SKELETAL MUSCLE FIBERS ARE PARALLEL TO EACH OTHER BUT VARY WITH RESPECT TO ****
Definition
TENDONS
Term
DIFFERENT FASCICLE ARRANGEMENTS INFLUENCE ***, ***, & ***
Definition

POWER, RANGE OF MOTION, STRENGTH

EX: LONG FIBERS HAVE GREATER RANGE OF MOTION

MUSCLES WITH GREATER NUMBERS OF FIBERS GENERATE MORE STRENGTH

Term
FASCILES PARALLEL TO LONGITUDINAL AXIS; FLAT TENDON
Definition
PARALLEL
Term
FASCICLES IN CONCENTRIC CIRCLES; ENCLOSE ORFICE; BEGINNING/END OF TUBE; SPHINCTER
Definition
CIRCULAR
Term
FASCICLES NEARLY PARALLEL TO LONGITUDINAL AXIS; MUSCLE TAPERS TOWARD FLAT TENDON
Definition
FUSIFORM
Term
FASCICLES SPREAD OVER BROAD AREA; CONVERGE AT 1 THICK TENDON
Definition
TRIANGULAR
Term

FASCICLES ARE RELATIVELY SHORT, TENDON EXTENDS ENTIRE LENGTH OF MUSCLE

UNIPENNATE: FASCICLES ON ONE SIDE OF TENDON

BIPENNATE: FASCICLES ON 2 SIDES OF CENTRALLY LOCATED TENDON

MULTIPENNATE: FASCICLES OBLIQUELY ATTACH TO SEVERAL TENDONS

Definition
PENNATE
Term

TRUE OR FALSE:

MOST MOVEMENTS REQUIRE SEVERAL MUSCLES ACTING AS A GROUP

Definition
TRUE
Term
MOST MUSCLES ARE ARRANGED **** AT JOINTS; ANTAGONISTIC MUSCLES ARE USUALLY ON OPPOSITE SIDES OF THE ***** OR ****
Definition
ANTAGONISTICALLY, BONE OR JOINT
Term
MUSCLE THAT CAUSES THE ACTION
Definition
PRIME MOVER/ANTAGONIST
Term
YIELDS TO THE ACTION OF THE PRIME MOVER
Definition
ANTAGONIST
Term

TRUE OR FALSE:

IN FLEXION/EXTENSION OF FOREARM

FLEXION: PRIME MOVER = BICEPS BRACHII; ANTAGONIST = TRICEPS BRACHII

IN EXTENSION THE ROLES ARE REVERSED

Definition
TRUE
Term

TRUE OR FALSE:

SOMETIMES PMs CROSS MORE THAN 1 JOINT; INTERMEDIATE JOINT & ORIGIN OF PM MUST BE STABILIZED TO PREVENT UNWANTED MOVEMENT

Definition
TRUE
Term
STABILIZE INTERMEDIATE JOINT/PREVENT UNWANTED MOVEMENT; AID PM
Definition
SYNERGISTS
Term
STABILIZE ORIGIN OF PM; ↑ EFFICIENCY OF PM; STABILIZE PROXIMAL END OF LIMB WHILE ACTION OCCURS AT DISTAL END
Definition
FIXATORS
Term

RECTUS FEMORIS

VASTUS LATERALIS

VASTUS MEDIALIS

VASTUS INTERMEDIUS

*EXTEND LEG AT KNEE*

Definition
QUADRICEPS FEMORIS
Term

BICEPS FEMORIS

SEMITENDINOSUS

SEMIMEMBRANOSUS

*FLEX LEG AT KNEE*

Definition
HAMSTRINGS
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