Podcast
Questions and Answers
What primarily causes motion at joints?
What primarily causes motion at joints?
- Muscle contraction (correct)
- Bone density
- Joint lubrication
- Ligament flexibility
How many skeletal muscles does the human body have?
How many skeletal muscles does the human body have?
- Over 800
- Over 600 (correct)
- Over 400
- Over 200
Which statement about the origins of skeletal muscles is true?
Which statement about the origins of skeletal muscles is true?
- They are always smaller than insertions.
- They always move.
- They normally remain stationary. (correct)
- They attach directly to tendons.
What are the non-contractile elements of a muscle responsible for?
What are the non-contractile elements of a muscle responsible for?
What is a key component of a motor unit?
What is a key component of a motor unit?
Which principle explains the recruitment order of motor units?
Which principle explains the recruitment order of motor units?
What does the 'all or none' law refer to in muscle contraction?
What does the 'all or none' law refer to in muscle contraction?
Why is variability in motor unit sizes important?
Why is variability in motor unit sizes important?
Which of the following movements is primarily associated with the ankle joint?
Which of the following movements is primarily associated with the ankle joint?
What muscle is predominantly responsible for ankle plantarflexion?
What muscle is predominantly responsible for ankle plantarflexion?
Which of the following actions does the subtalar joint NOT perform?
Which of the following actions does the subtalar joint NOT perform?
What is the primary function of the tibialis posterior muscle?
What is the primary function of the tibialis posterior muscle?
During which movement does the foot move towards the midline of the body?
During which movement does the foot move towards the midline of the body?
Which of the following muscles is NOT responsible for ankle movements?
Which of the following muscles is NOT responsible for ankle movements?
Which movement is characterized by the toes moving away from the shin?
Which movement is characterized by the toes moving away from the shin?
What is primarily impaired if the ankle joint’s dorsiflexion is limited?
What is primarily impaired if the ankle joint’s dorsiflexion is limited?
Which intrinsic muscles are primarily responsible for extending the toes?
Which intrinsic muscles are primarily responsible for extending the toes?
Which of the following muscles is not an intrinsic muscle that flexes the toes?
Which of the following muscles is not an intrinsic muscle that flexes the toes?
Which intrinsic muscles are responsible for abducting the toes?
Which intrinsic muscles are responsible for abducting the toes?
What is a primary function of the intrinsic muscles that adduct the toes?
What is a primary function of the intrinsic muscles that adduct the toes?
Which intrinsic muscle acts as an antagonist to those that flex the toes?
Which intrinsic muscle acts as an antagonist to those that flex the toes?
What is the role of intrinsic muscles in the foot?
What is the role of intrinsic muscles in the foot?
Which of the following intrinsic muscles is known for adducting the toes?
Which of the following intrinsic muscles is known for adducting the toes?
Intrinsic muscles that extend the toes include which of the following?
Intrinsic muscles that extend the toes include which of the following?
Which muscle is not primarily classified as an intrinsic muscle of the foot?
Which muscle is not primarily classified as an intrinsic muscle of the foot?
To which group do the intrinsic muscles that help flex the toes belong?
To which group do the intrinsic muscles that help flex the toes belong?
Where do the two heads of gastrocnemius arise?
Where do the two heads of gastrocnemius arise?
What separates each head of gastrocnemius from the knee joint capsule?
What separates each head of gastrocnemius from the knee joint capsule?
What happens to the heads of gastrocnemius as they pass down the leg?
What happens to the heads of gastrocnemius as they pass down the leg?
Where does the gastrocnemius ultimately attach?
Where does the gastrocnemius ultimately attach?
What is the nerve supply of gastrocnemius?
What is the nerve supply of gastrocnemius?
What are the actions of the gastrocnemius muscle?
What are the actions of the gastrocnemius muscle?
What is the main activity during which the calf muscles exert their force on the posterior part of the foot?
What is the main activity during which the calf muscles exert their force on the posterior part of the foot?
How much strain is the tendocalcaneus able to withstand?
How much strain is the tendocalcaneus able to withstand?
What do the plantar interossei muscles primarily do?
What do the plantar interossei muscles primarily do?
Which intrinsic muscle is located in the 1st layer of the foot?
Which intrinsic muscle is located in the 1st layer of the foot?
What is the primary function of the dorsal interossei muscles?
What is the primary function of the dorsal interossei muscles?
How many layers of intrinsic muscles are typically described in the foot?
How many layers of intrinsic muscles are typically described in the foot?
What is the function of the plantar aponeurosis?
What is the function of the plantar aponeurosis?
Which muscle is known to be located on the dorsum of the foot?
Which muscle is known to be located on the dorsum of the foot?
What happens to the arches of the foot when weight is applied?
What happens to the arches of the foot when weight is applied?
Which muscle is included in the 3rd layer of intrinsic muscles in the foot?
Which muscle is included in the 3rd layer of intrinsic muscles in the foot?
