antagonistic action and muscle fibres

__________ the muscle that contracts to create movement. 

• Voluntary
• Antagonistic
• Antagonist
• Agonist

_______________ - muscles change length as they contract. It can either shorten the muscle or lengthen it. 

• Isometric contractions
• Isotonic contractions
• Concentric contraction
• Eccentric contraction

_______________ - muscle contract, but stay the same length. An example is the muscles in the vertebral column that maintain the body's posture. 

• Isometric contractions
• Isotonic contractions
• Eccentric contractions
• Concentric contraction

When a muscle shortens under tension it is called a...

• Concentric contraction
• Eccentric contraction
• Isometric contraction

When a muscle lengthens under tension it is called a...

• Isometric contraction
• Eccentric contraction
• Concentric contration

A wall sit is an example of which type of contraction?

• Eccentric
• Concentric
• Isometric

Muscles work in pairs. What are these called?

• Symmetrical
• Agonistic
• Antagonistic
• Asymmetrical

Which muscle is the Agonist during the action of 'standing on tiptoes'?

• Hamstrings
• Quadriceps
• Gastrocnemius
• Gluteals

Which muscle is the Antagonist during the action of 'throwing a dart'?

• Bicep
• Deltoid
• Tricep
• Pectoral

Which of these is NOT an antagonistic pair?

• Biceps & Triceps
• Hamstrings & Quadriceps
• Pectorals & Abdominals
• Abdominals & Latissimus Dorsi