When calcium ions bind to troponin

Specifically explain the way(s) in which a muscle can contribute to the stability and health of a joint.  

A muscle that is striated and is solely under involuntarily control is skeletal muscle cardiac muscle smooth muscle found in walls of intestines attached to bones of the skeleton

A) A motor neuron has just fired an action potential. How does this lead to skeletal muscle contraction? Outline or LIST all of the steps involved in skeletal muscle contraction following activation of a motor neuron.   (Be sure to include enough in your answer such that the muscle has actually gotten shorter).  You do not need to include all of the steps of the cross-bridge cycle in your answer, just get the muscle shorter.  (10 pts)B) Assume that the motor neuron then ceases to fire.  State 3 ways (other than motor neuron no longer firing) that ensure that the signal to the muscle cell is rapidly turned off/stopped.  (3 pts) C) If a person is suffering from Myasthenia gravis, describe how or if the above processes is impacted, being as precise and specific as possible (3 pts) 

Skeletal muscle fibers are formed from embryonic cells called

In response to action potentials arriving from the transverse tubules, the sarcoplasmic reticulum ________

The bacterium that causes tetanus produces a toxin that affects the central nervous system and skeletal muscles producing powerful tetanic contractions of the skeletal muscles.  The toxin probably acts by

What type of joints are found between the carpals (carpal -to- carpal)?

Articular cartilage is a special type of ______________ that lacks_______________.

TDM is used by physicians to