Examining Interacting Muscles 1.7 Flashcards
What do the majority of the 600 muscles work as?
Pairs
As one muscle of the pair contracts…
The other muscle relaxes and vice versa.
When muscles contract, what do they pull on?
A tendon and a bone
Can muscles pull or push?
Pull
What are antagonistic muscles?
Pairs of muscles that work against each other.
In the arm, what are the muscles that work as an antagonistic pair to control movement at the elbow?
Biceps and triceps.
What are biceps?
Muscle in the arm
What are triceps?
Muscle in the upper arm
To move the forearm up…
The bicep contracts and the triceps relaxes.
To move the forearm down…
The tricep contracts and the bicep relaxes
What are other examples of antagonistic muscles?
Quadriceps and hamstring muscle
Shin and calf muscles
What are models extremely useful for?
To help us visualise something we cannot actually see.
Models are not usually a perfect representation of the real situation. True or False?
True
The forearm moves up as…
The top rubber band is pulled.
The forearm moves down as…
The bottom rubber band is pulled.
