BIOL 223 Chapter 10-2

List the three types of connective tissue of muscle.

What structure is surrounded by the epimysium?

The epimysium is comprised of what kind of tissue?

What structure is surrounded by the perimysium?

What type of tissue comprises the perimysium?

What structures are surrounded by the endomysium?

The endomysium is comprised mainly of _______ fibers.

At the ends of muscles, the three connective tissue layers combine to form what two things?

What cells act as embryonic percursors to muscle?

True or False: Myoblasts will fuse together to form muscle fibers.
True False

What is the relationship between the number of myoblasts and the number of nuclei in a mature muscle fiber?

When does mitosis in muscle fibers stop?

What is the function of satellite cells on the muscle?

Skeletal muscle is comprised of smaller units known as:

Muscle fascicles are comprised of smaller units known as:

Muscle fibers are comprised of individual units called:

List the structural units of muscle from largest to smallest.

What is the main function of sarcoplasmic reticulum?

When the transverse tubules depolarize the muscle, the sarcoplasmic reticulum releases calcium ions from what structure?

What anchors myosin filaments to the Z line?

List the three functions of myosin heads discussed in lecture.

On which actin structure will you find the active sites?

Two strands of G-actin wind together in a sort of double helix to form:

How does tropomyosin function during muscle contraction?

What will the 1st subunit of Troponin bind to?

What will the 2nd subunit of Troponin bind to?

What will the 3rd subunit of Troponin bind to?

Which muscle fiber proteins are contractile proteins?

What role do contractile proteins play?

Which proteins are regulatory proteins?

List the four structural proteins discussed in lecture.

What structural protein contributes to muscle elasticity and attaches the thick filaments to the Z line?

What structural protein makes up the Z line?

What structural protein makes up the M line?

What structural protein winds around the actin filaments, holds it together, and attaches it to the Z line.