Prepared by: Arwa Althaher

1. Simple Muscle Twitch

2. Summation

3. Tetanization & Fatigue

4. Effect of Temperature

Sciatic nerve

Gastrocnemius Muscle

Stimulating electrodes

Connected to stimulator

Transducer

1. Simple Muscle Twitch

2. Summation

Summation

Incomplete Tetanization

Complete Tetanization

Fatigue

3. Tetanization & Fatigue

Effect of Temperature

Hot

Temp 45

⁰C Room

Temp

25 ⁰C

Cold

Temp

4⁰C

High Temp Room Temp Low Temp

Shortest Between Longest 1- Latent period

Shortest Between Longest 2- Contraction period

Longest Between Shortest

3- Amplitude