Name the muscle that lifts the lower leg anteriorly.
Name a muscle that rotates the upper arm.
Name the muscle that lifts the back.
Name a muscle that extends the foot (plantarflexion).
Name the muscle that holds the abdomen.
What muscle covers the majority of the shoulder joint?
Define the term antagonistic muscles and give an example in the body.
What is acetylcholine?What action does it cause?
What type of neuron triggers effector cells such as muscles and glands?