ACE ACE Anatomy & Biomechanics 3

Question 1

Which muscle group is responsible for plantarflexion, which occurs during a calf raise or push-off in aerobics?

Accepted Answer

Gastrocnemius and soleus

Answer

Tibialis anterior and peroneals

Answer

Quadriceps and hip flexors

Answer

Hamstrings and gluteus medius

Question 2

What is the function of synergist muscles during a movement pattern?

Accepted Answer

They assist the agonist in performing the primary movement

Answer

They oppose the agonist to control speed

Answer

They anchor the origin of the agonist muscle

Answer

They are only active during isometric holds

Question 3

What joint action characterizes dorsiflexion, and why is adequate dorsiflexion important for squats?

Accepted Answer

Pulling the toes toward the shin; allows heels to stay down and knees to track over toes

Answer

Pointing the toes downward; keeps heels elevated

Answer

Rotating the ankle inward; prevents pronation

Answer

Extending the foot; increases push-off power

Question 4

Which anatomical landmark is used as a reference when instructing proper knee alignment during lower-body exercises?

Accepted Answer

Second toe (mid-foot line)

Answer

Medial malleolus

Answer

ASIS (anterior superior iliac spine)

Answer

Lateral epicondyle of the femur

Question 5

What is the term for the position of the body when describing anatomical movements and directions?

Accepted Answer

Anatomical position

Answer

Prone position

Answer

Supine position

Answer

Functional position

Question 6

Which type of muscle contraction produces force without any change in muscle length or joint angle?

Accepted Answer

Isometric

Answer

Concentric

Answer

Eccentric

Answer

Isotonic