BTEC Sport Unit 1 - Muscular System B1-B3

What is the main function of the triceps muscle?

• Flexes and adducts upper arm

• Extends lower arm

• Supinates the forearm

• Pronates the forearm

Where are the supinators located?

• Front of upper arm

• Top and rear of forearm

• Back of forearm

• Large chest muscle

Which muscle would be most active during the straightening of the wrist?

• Wrist Flexors

• Wrist Extensors

• Trapezius

• Pectorals

If an athlete has difficulty with top spin in racket sports, which muscle group should be examined for possible weakness or injury?

• Pronators

• Supinators

• Wrist Flexors

• Trapezius

If a person is performing dorsiflexion of the foot, which muscle are they primarily using?

• Tibialis Anterior

• Gastrocnemius

• Soleus

• Hamstrings

Which muscle is deep to the Gastrocnemius and is involved in plantar flexion?

• Soleus

• Quadriceps

• Obliques

• Hip Flexors

A runner wants to improve their ability to stand on tip-toe. Which muscle should they focus on strengthening?

• Gastrocnemius

• Hamstrings

• Abdominals

• Tibialis Anterior

What happens when a muscle contracts?

• It exerts a pulling force on the bones to create movement.

• It pushes the bones away from each other.

• It only relaxes and never contracts.

• It causes the bones to dissolve.

What is the role of the agonist muscle in an antagonistic pair?

• It contracts to create movement.

• It relaxes to allow movement.

• It pushes the bone away.

• It remains inactive.

When flexing the elbow, which muscle acts as the agonist and which as the antagonist?

• Agonist = Biceps, Antagonist = Triceps

• Agonist = Triceps, Antagonist = Biceps

• Agonist = Quadriceps, Antagonist = Hamstrings

• Agonist = Gluteals, Antagonist = Hip Flexors