Kin 302 – Anatomical Kinesiology

Specific Readings:
Behnke: pgs 11-15, 20-22
Thompson and Floyd: 22-41

Muscle Anatomy

Muscle Tissue

Connective Tissue

Contractility

Irritability

SARCOLEMMA.

fasciculi.

sarcoplasm.

Myofibrils

myofilaments.

Contractile Unit

Sarcomere

Myofilaments

1.     Actin

2.     Myosin

Z-Lines

A-Band

H-Zone 

I-bands

Crossbridge

Types of Contraction

Concentric Muscle Action

Eccentric Muscle Action

Muscle Fiber Types

Three basic muscle fiber types –

1.     Slow oxidative (Type I fibers)

2.     Fast Twitch oxidative glycolytic (Type IIA)

3.     Fast-twitch glycolytic (Type II)

Size, Arrangement, and Number

Fusiform

Unipennate, bipennate, multipennate

Connective Tissue

Endomysium

Perimysium

Epimysium

Fasciae

Form the parallel elastic component. 

Muscle Tension

1.     Active Tension

2.     Passive tension

3.     Length-tension relationship

4.     Force vs velocity of shortening.

a.   Stretch-Shortening Cycle - use of pre-stretch to increase performance.

5.     Active Insufficiency

Isokinetic Contraction

Isoinertial

Agonist(s)

Antagonist

Co-contraction

Synergists