Muscle contractions and fibre types

Which of the following is an example of an antagonistic pair?

• Bicep and tricep at the elbow joint

• Quadriceps and hamstring at the shoulder

• Deltoid and pectoral at the knee

• Gluteus and calf at the wrist

What is the primary characteristic of an isometric contraction?

• Muscle length remains constant

• Muscle length changes

• Muscle shortens

• Muscle lengthens

What is a characteristic of isotonic contractions?

• No movement of the body

• Movement of a body part

• Complete relaxation

• Stretching of muscles

What is a characteristic of isometric contractions?

• Muscles change length

• Movement of a body part

• No movement of the body

• Muscles relax

What is the main difference between isotonic and isometric contractions?

• Isotonic involves no movement, isometric involves movement

• Isotonic involves movement, isometric involves no movement

• Both involve movement

• Both involve no movement

Which type of contraction is used when holding a yoga pose?

• Isotonic

• Isometric

• Concentric

• Eccentric

What is a characteristic of concentric contractions?

• Muscle contracts and lengthens.

• Muscle contracts and shortens.

• Muscle relaxes and lengthens.

• Muscle relaxes and shortens.

What is the exam hack for remembering eccentric contractions?

• Eccentric = Condense

• Eccentric = Shorten

• Eccentric = Extend/Lengthen

• Eccentric = Contract

What happens to the muscle during a concentric contraction?

• It lengthens.

• It shortens.

• It remains the same.

• It relaxes.

What is a key feature of concentric contraction?

• Muscle lengthens

• Muscle shortens

• Muscle stays the same length

• Muscle relaxes