Muscular System

The ability to respond to certain stimuli

The ability to transmit impulses (electrical signals).

The ability to shorten and thicken to generate work (tension).

The ability to be
stretched (lengthen)
without damage.

The ability to return to
its original form and
shape after contraction or
lengthening.

what is highly excitable (irritable),
meaning it can respond to nervous system
stimuli (impulses) to initiate contraction.

A large, sheetlike
connective
tissue covering
the entire
muscle.

Attaches muscle
to bone. Cords of dense
connective
tissue.

Attaches muscle
to another
muscle.

Broad, flattened connective tissue.

Less movable attachment site,
more stable end, usually proximal.

More movable attachment site,
less stable end, usually distal.

This is the mechanism by
which muscle fibers
shorten.

a persistent or continuous state of slight
muscle contraction.

Defined as the Tension in a
Muscle at Rest.

Defined as the Muscle's
Ability to Contract and Create Force in Response
to Resistance.

Increases
muscle tone
(tension)
but the load
is too great.

Muscle
tension is
constant,
and the
muscle does
work.

Produce
Muscle
Tone

the only type of muscle contraction wherein the muscle shortens

raises eyebrows

smiling/laughing

Elevates the jaw (closes
mouth).

Together: flex the head
forward.
Individual: bendotate
the head laterally.

Chief muscle of
respiration

Compresses abdomen
(aids in defecation,
urination, childbirth).

Compresses abdomen,
bends & rotates vertebral
column laterally

Abducts arm, flexes and
extends the shoulder

Flexes shoulder, adducts
arm.

Flexes and supinates the
forearm.

Extends forearm.

Chief flexor of the hip.

Chief extensor of the hip.

Extends the knee
(Extensor muscles).

Flexes the knee, extends
the hip (Flexor muscles).

Extends (dorsiflexes)
ankle (foot).

(Plantar) flexes ankle
(foot).

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what is the bloods main function?