Water Under the Crossbridge Cycle
The term for the motor neuron and all of the muscle fibers it innervates.
What is a motor unit?
This component of a reflex arc processes the information taken in by the sensory neuron.
What is the integration center?
These muscle fibers are described as "white" fibers.
What are Type IIb fibers?
This regulatory protein lies over the myosin binding site on actin.
What is tropomyosin?
This region of the sarcomere is described as the dark band.
What is the A band?
This term is used to describe the state of muscle when the actomyosin crossbridges become permanently bound.
What is rigor?
Plain and simple -- in this type of reflex there is direct communication between the sensory and motor neurons.
What is a monosynaptic reflex?
These muscle fibers have the highest capillary density.
What are Type I fibers?
This structural protein is the largest protein in the sarcomere.
What is titin?
These are the 2 functions of calcium in skeletal muscle contraction.
What are causes release of Ach in the motor neuron and binding to troponin to expose the myosin binding site on actin?
These invaginations of the sarcolemma allow the action potential to travel into the muscle fiber to cause contraction.
What are T-tubules?
This proprioceptor senses the total stretch as well as the speed of the stretch of skeletal muscle.
What are muscle spindles?
These muscle fibers have the fastest contraction speed.
What are Type IIb fibers?
This protein which has 3 different isoforms functions is bound to the LMM chain of myosin and titin and functions in the regulation, assembly, and providing structural stability for the contractile proteins.
What is myosin binding protein-C (MyBP-C)?
This is the function of sodium in skeletal muscle contraction.
What is depolarizing the sarcolemma and T-tubules?
The term used to describe the process of myosin releasing its energy and pulling the actin fibers towards the M-line of the sarcomere.
What is the power stroke?
It's a stretch, the knee-jerk or patellar reflex is a classic example of this type of reflex.
What is a myotatic reflex?
These muscle fibers are the smallest in diameter.
What are Type I fibers?
This protein is the major thick filament cross-linking protein that creates the M-line.
What is myomesin?
This protein is located at the M-line and catalyzes the creating of creatine.
What is creatine kinase?
Before myosin can attach to actin, it must be in its high energy form where it is bound to these molecules.
What are ADP and Pi?
What is a flexor reflex?
These muscle fibers are often called intermediate fibers.
What are Type IIa fibers?
This structural protein binds the tropomyosin and actin and helps regulate the length of the actin filament.
What is tropomodulin?
This protein that also helps ensure the length of the actin filament is located at the Z-disc.
What is CapZ?