Diagram
This is the principal muscle of the calf.
What is the gastrocnemius?
This is the energy source used to attach and detach crossbridges repeatedly.
What is ATP?
This muscle is located in hollow organs.
What is smooth muscle?
This type of muscle attachment is to the movable bone.
What is insertion?
These are the two primary filaments that make up the myofibril.
What are myosin/actin?
This muscle is in the lateral forearm
What is the brachioradialis?
This is formed from the binding together of actin and myosin during muscle contractions. It is the functional unit of muscle fibers.
What is a sarcomere?
This muscle produces steady, rhythmic contractions.
What is cardiac muscle?
This is one motor neuron and all the skeletal muscle cells it stimulates.
What is a motor unit?
This is the muscle attachment to the immovable bone.
What is the origin?
This muscle, in the shoulder, is superior to the biceps brachii
What is the deltoideus?
This states that the sarcomere shortens when thin and thick myofilaments slide past each other.
What is the sliding filament theory?
This is how smooth muscles are shaped.
What is spindle-shaped?
This is when muscles don’t have time to relax fully between stimuli, and this results in one smooth contraction.
What is fused tetanus?
This type of connective tissue surrounds the entire muscle.
What is epimysium?
This muscle is responsible for elevating eyebrows.
What is the frontalis?
This neurotransmitter causes changes in membrane permeability.
What is acetylcholine?
This muscle type has single, long, cylindrical cells.
What is skeletal muscle?
This is the synapse where the neuron and muscle cell meet.
What is the neuromuscular junction?
This type of connective tissue surrounds each fascicle.
What is perimysium?
This is a flat muscle in the lower thorax on the posterior side of the body.
What is the latissimus dorsi?
In the eighth step of muscle contraction, actin filaments are pulled to the center of this structural unit, composed of actin and myosin.
What is a sarcomere?
This cell type has branching chains.
What is cardiac muscle?
These are long contractile fibers, in groups that run parallel to each other on the long axis of the myocytes.
What are myofibrils?
This is the second largest of the four structures of muscles.
What is muscle fiber?