Properties of Muscles —
(property is a distinguishing characteristic)
le Elasticity |

2. Irritability
Yusele Nomenclature

Muscle names may be derived from théir
| l» Situation: pectoralis or tibialis.

2. Points of attachment: stemomastoid

3. Shape: trapezius |

4. Structure: triceps, digastic

5. Direction: rectus, ebitque’

| 6. Function: flexon, abgjueto ehdieler>
Muscle Action )

No muscle acts as a single unit, in a combination of
muscles in even the simplest movement. Movement is essentially
not absolute, but general in relation to musculature.

When muscle contracts ite insertion is generally
eporoximated to origin where both attachments are movable, frequently
the insentten way for thme become relatively more fixed than insertion.

fhe different ways in which individual maseles may function
in eny given movement are as follows:

le Prime movers-«those which by their active contractions

are resopnsible for the actus] movements of parts which occurr.

Ze Antagentstessoapabio by their contraction of producing

the reverse movement, and by them relaxation enable the movement

to be effected. Have a reciprocal action with the prime movers.