Biology Muscle and DMD review

What fibers are involved in muscle contraction?

Actin and myosin

Which of the following causes break down of proteins in the muscle cell?

Calcium

What type of molecule are actin, myosin, and dystrophin?

Contracting proteins

Which of the following provides energy to the muscle cells?

Creatine Kinase

How does DMD affect creatine kinase

DMD makes rips in the muscle membranes allowing molecules to leave and enter the cell.

When you bundle muscle fibers together what do you get?

Fascicles

What is another word for a muscle cell?

Muscle fiber

When you bundle fascicles together what do you get?

Muscles

What are muscle cells filled with?

Myofibrils

What is the job of dystrophin?

Prevents the membrane from tearing when the muscle contracts.

What are the 3 types of muscles found in the body?

Skeletal, cardiac , and smooth

What happens to muscle fibers during exercise in DMD patients?

Their muscles break down but do not build back up after.

What happens to muscle fibers during exercise?

They break apart.