Scientists have identified at least 10 different myosin heavy chain (MYH) gene versions (or isoforms) in mammals from striated, smooth, and non-muscle cells. Match the fiber type with the primary myosin heavy chain gene/protein version: Type I Fiber [A] Type IIa Fiber [B] Type IIx Fiber [C]

Every spring the NFL evaluates top college athletes for their performance in various football activities. One event is the 40 yard (~40 meters) dash or running sprint. One year the fastest was 4.22 seconds to sprint the 40 yards. Which energy pathway will supply most of the newly required ATP in muscles during the first 1 to 5 seconds of a running sprint?

Assuming you are a teaching assistant in BIOL 430 in the near future. Help a student in your “office hours” by describing the role of each of the following in muscle function – actin, myosin, troponin, and tropomyosin:

When you lift a barbell and generate enough force to shorten the biceps and lift the barbell then this is which type of contraction? [A] When you generate enough force to keep the barbell in a static position and not moving at all then this is which type of contraction? [C] When you generate enough force in the biceps to slowly lower the barbell so that the muscle is actually lengthening then this is which type of contraction? [B]

Describe (if you only list then no credit) the three mechanisms of ATP production in a skeletal myocyte that needs more ATP for muscle contraction:

BOTOX® is the commercially available form of a naturally occurring bacterial toxin. Doctors inject this toxin to paralyze specific muscles of facial expression thus reducing the appearance of lines and wrinkles. What specific mechanism allows BOTOX to stop muscle contraction?

The resting potential or voltage in a muscle cell or neuron is due to:

During weeks of starvation, skeletal muscle can act as an important nutrient reserve by directly providing which of the following as a fuel source for the rest of the body’s cells?

Starting with the arrival of an action potential at the neuromuscular junction, which of the following is the correct order and timing of events?

David et Daphne sont des amis.  David est étudiant à UMKC où il étudie les maths.  Il est d’Iowa.  Le weekend, il travaille à Tiki Taco.  Il est grand, mince et brun.  Il a les yeux marron.  Il a une barbe et une moustache.  Il aime faire des randonnées et il aime jouer aux billards.  Son amie Daphne étudie l’histoire américaine.  Elle est de Raytown.  Elle ne travaille pas.  Elle est mince et de taille moyenne.  Elle a les cheveux longs, blonds et bouclés.  Elle fait des promenades avec son chien Buddy au parc à Raytown.  Elle fait de la danse et elle joue du piano.  Elle aime jouer aux jeux de société avec ses amis.    4. Who plays board games?