Ess 303 biomechanics
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ESS 303 - Biomechanics. The Muscular System. Muscles and Articulations. Uniarticulate Biarticulate Multiarticulate Active Insufficiency: Difficulty in producing full ROM movements in 2(+) joints at the same time

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Ess 303 biomechanics

ESS 303 - Biomechanics

The Muscular System


Muscles and articulations
Muscles and Articulations

  • Uniarticulate

  • Biarticulate

  • Multiarticulate

    • Active Insufficiency: Difficulty in producing full ROM movements in 2(+) joints at the same time

    • Passive Insufficiency: Difficulty in achieving full ROM stretches in 2(+) joints at the same time


Pennation
Pennation

Muscle Movement Muscle Fiber Orientation

Non-pennated

Pennated


Pennation1
Pennation

Non-pennated

Pennated


Pennation2

Greater Force

Greater Movement

Pennation

Fusiform Unipennate Bipennate Multipennate


Contraction types
Contraction Types

  • Concentric

  • Eccentric

  • Isometric

  • Isotonic

  • Isokinetic

  • Static



Gross structure

Epimysium

Perimysium

Endomysium

Sarcoplasm

Sarcolemma

Nuclei

Muscle Belly

Fasciculus

Fiber (Cell)

Gross Structure



Z Line

M Line

Z Line

H Zone

Thick Filament

(Myosin)

Thin Filament

(Actin)

I Band

A Band

I Band


Z-Line

H-Zone

M-Line

Z-Line

I-Band

A-Band

I-Band


Heavy

Myromyosin

S1

Light Myromyosin

S2


Length tension relationship
Length-Tension Relationship

Too Short

Too Long


Length tension relationship1
Length-Tension Relationship

% of Max Tension

Length


Force velocity relationship
Force-Velocity Relationship

Force

Eccentric

Isometric

Concentric

Velocity


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