Muscle Cells
A muscle cell is also known as a muscle _____
Fiber
What is the action of the wrist extensors?
Extension
What is the long extension of the nerve cell that travels all the way to the muscle?
Axon
Elbow
What muscle flexes the elbow?
Biceps
Red, White, and Intermediate are the 3 types of what?
Muscle fibers/cells
What is the action of the quadriceps?
What do we call the place at which the axon terminal meets the muscle fiber?
Neuromuscular junction
What joint do the quadriceps muscles extend?
Knee
What muscle flexes the ankle?
Anterior Tibialis
Which filament in the muscle cell does NOT move?
Thick filament
What is the action of the gluteus?
Stabilization
What is the chemical released by the axon to stimulate muscle contraction?
Acetylcholine
The calf extends the ankle by pulling on what?
The calcaneus
The hamstrings flex the knee by pulling on what bone?
Tibia
What is the action of the thin filaments moving on the thick filaments during muscle fiber contraction called?
Cross bridging
What is the action of the Groin muscles?
Adduction
What is the name of the area on the muscle that is part of the neuromuscular junction?
Motor end plate
What aspect of the forearm (when in anatomical position) are the wrist extensors on?
These muscles pull on the carpals and metacarpals to produce flexion.
Wrist Flexors
What is the name of the unit of the muscle cell that shortens?
Sarcomere
What is the action of the Peroneal muscles?
Eversion
Why can we make smaller movement with our facial muscles but not with our gluteal muscles?
Because the ratio of nerve:fiber is lower. So when we activate a nerve it can stimulate fewer muscle fibers
What stabilizing muscle can also be utilized as an extensor?
Back Musculature
Name one flexor muscle, the joint it acts on, and the bone it pulls on.
Wrist flexors, wrist, carpals and metacarpals
Hamstrings, knee, tibia
Biceps, elbow, radius
Anterior Tibialis, ankle, 1st metatarsal (300 BONUS pts for naming this one)