worksheet 7C, due Thursday 11-19-09

Things that should be in your outline 7c (p194-198)

Muscle mechanics
Individual muscle cells are connected and tied together by connective tissue
Tension
Collagen fibers
Resistance
Resistance depends on –
Compression
Muscles can only –
The amount of tension depends on –

Tension produced by an individual muscle fiber depends on:
1.
2.
Tension produced by an entire skeletal muscle is determined by:
1.
2.

Frequency of muscle fiber stimulation
Twitch
Myogram
Latent period
msec
contraction phase
relaxation phase
see fig 7-6
summation
incomplete tetanus
complete tetanus
see fig 7-7
disease tetanus

The number of muscle fiber involved
Motor unit
See fig 7-8
Recruitment
Peak tension production occurs when

Muscle tone
Atrophy
Why is physical therapy important?

Isotonic contraction
Isometric contraction
What three things cause muscles to elongate?