18 Questions
Which muscles contract at the knee to prevent hyperextension and initiate flexion?
Gastrocnemius
Which muscle contracts at the hip to extend it further?
Gluteus maximus
What is the function of the Triceps surae at the ankle?
To produce plantarflexion
Which muscles contract at the hip to stabilize the pelvis?
Gluteus medius and tensor fascia lata
What is the function of the Rectus femoris at the knee?
To prevent hyperextension
Which muscles contract at the hip to initiate flexion?
Adductor longus
During the loading response phase, which muscle contracts at the hip?
Gluteus maximus
Which muscle contracts at the ankle during the mid-stance phase?
Tibialis anterior
During the initial contact phase, which muscle is active at the ankle?
None of the above
At the knee, which muscle contracts during the loading response phase?
Hamstrings
During the mid-stance phase, which muscle contracts at the hip?
Gluteus maximus
Which muscle contracts at the ankle during the heel rise phase?
Triceps surae
What is the action of Iliopsoas at the hip joint?
To maintain flexion
Which muscle contracts at the knee to limit extension?
Hamstrings
What is the action of Tibialis anterior at the ankle joint?
To dorsiflex the ankle
What happens to the hip, knee, and ankle joints during initial contact?
Hip flexes, knee flexes, ankle dorsiflexes
What is the action of Hamstrings at the knee joint?
To limit extension
What type of moment and power is generated at the hip joint during initial contact?
Hip flexor moment and power generation
Test your knowledge of joint motion and muscle contractions in the hip, knee, and ankle joints. Learn how different muscles, including the gluteus maximus, hamstrings, quadriceps, and triceps surae, contract to produce movement and stabilize the pelvis. Understand the moments and power generation in each joint.
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