Cell Biology - muscle tissue

The sarcolemma of a muscle fibre is the:

• cell membrane

• cytosol

• endoplasmic reticulum

• mitochondria

Actin, myosin, ATP & Ca2+ are essential for ....

• action potential generation

• muscle contraction

• action potential inhibition

• muscle relaxation

Which type of muscle is spontaneously stimulated?

• cardiac muscle

• skeletal muscle

• smooth muscle

Myofibrils are made up of ....

• muscle fibres

• muscle fibre bundles

• myofilaments

• myofibrils

Desmosomes link cells ....

• chemically

• electrically

• hormonally

• mechanically

In contraction cardiac and skeletal muscle Ca2+ binds to ...

• calmodulin

• troponin

• IP3 receptor

• sarcoplasmic reticulum