Muscles
There are three types of muscle :
Skeletal
Smooth
cardiac
1.Have two or more attachments, that which
moves least, referred as origin , and that which
moves the most as insertion,
Have fleshy part referred as belly,
Attached to bones by fibrous tissue known as
tendon, or by strong sheet of fibrous tissue
called aponeurosis, tendinous interdigitation of
the fibrous ends of flat muscles is called raphe. Pennate muscles: mucles whose fibres run
obliquely to the line of pull (resemble a
feather), there are
Unipennate muscle: tendon lies along one
side of the muscle and muscle fibres pass
obliquely eg. Extensor digitorum longus
Bipennate: tendon lies in the center of the
muscle and the muscle fibres run to it from
two sides.eg.Types of skeletal muscles according to
their action
Prime mover: The chief muscle or group of
muscles responsible for a particular movement
eg. Quadriceps femoris is a prime mover in the
movement of knee extension
Antagonist: muscle that opposes the action of
prime mover eg. The biceps femoris opposes
the action of quadriceps femoris, and before
the prime mover can contract the antagonist
must relax equal and this brought about by
nervous reflex inhibition.Prime mover, Antagonist, Fixator, Synergist .University Of Tripoli 13
Muscles
University2.3.2.3.4.