Muscular System

the anaerobic bacteria which causes botulism

• clostridium botulinum

• escherichia coli

• staphylococcus aureus

• salmonella enterica

responsible for the movement (push or pull) of actin and myosin

• contractile proteins

• structural proteins

• enzymes

• receptor proteins

these heads form cross bridges

• actin

• tropomyosin

• myosin

• calmodulin

a toxin secreted by an anaerobic bacteria which prevents the release of ACh at the synaptic junction

• botulinum toxin

• tetanus toxin

• ricin

• sarin

what is a power stroke?

• a contraction

• a relaxation

• a stretch

• a flexion

what types of muscles are subject to the greatest amount of extensibility?

• skeletal

• smooth and cardiac

• cardiac only

• skeletal and cardiac

what is the order of a muscle contraction?

• latent period

• contraction

• relaxation phase

• refractory period

the 3 proteins actin is made up of

• actin

• myosin

• collagen

• tropomysin

a single multinucleated muscle fiber that arises from the mesoderm

• muscle cell

• nerve cell

• adipocyte

• epithelial cell

part of sarcomere that overlaps actin and myosin

• A band

• I band

• Z line

• H zone