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Bone and support
Bone and supports
29
Anatomy
Undergraduate 3
07/02/2010

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Cards

Term
Origins
Definition
Origins are located medially or proximally
Term
insertions
Definition
are located laterally or distally
Term
unipennate muscles
Definition
go in one direction
Term
bipennate msucles
Definition
2 pennations
Term
multipennate muscles
Definition
can be arranged in a series
usually more powerful muscles
Term
fascia
Definition
lit between skin and muscles and bone. can be deep or superfical
thickened in joints called
retinaculum
Term
motor unit
Definition
muscles fibers and motor neuron
large muscles= less neurons
Small muscles=more neurons
Term
Prime mover
Definition
chief muscle mover
Term
antagonist
Definition
opposes the action of the prime mover
Term
fixator
Definition
contracts isometrically to stabilize
Term
synergist
Definition
stabilizes intermedite joints
Term
alpha nerve fibers
Definition
innervate skeltal muscle
Term
beta nerve fibers
Definition
innervate fibers and spindles
Term
gamma fibers
Definition
innervate spindles
Term
joints
Definition
where 2 or more bones come together
Term
fibrous joints
Definition
joined by fibrous tissue... limited moverment
e.g. skull
Term
Cartilaginous joints
Definition
primary bones united by a plate or bar of hyaline cartilage

Secondary
bones united by fibrocartilage and covered with hyaline
Term
Synovial joints
Definition
permits greater movement protects and reduces friction
Term
articular discs
Definition
wedges of fibrocartilage between surfaces
Term
fat pads
Definition
found in some synovial joints
Term
plane joints
Definition
facing articular surfaces flat
Term
hinge joints
Definition
bone shape permits greater moverment knee
Term
pivot joints
Definition
central bony point surrounded by ligament ring... neck
Term
Condyloid joints
Definition
bring together convex and concave surfaces ex. fingers
Term
Ellipsoid joints
Definition
elliptical convex and concave wrist allows for lots of movement
Term
saddle joints
Definition
resemble horse and saddle
ex thumb
Term
ball and socket
Definition
ball shaped fits in socket hip
Term
arteries
Definition
transport blood from heart
Term
veins
Definition
blood back to heart
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