| back 5 - Single-unit smooth muscle
- Sheets of muscle fibers
- Fibers held together by gap junctions
- Exhibit
rhythmicity
- Exhibit peristalsis
- Walls of most hollow
organs
|
| back 6 - Less organized
- Function as separate units (Fibers
function separately)
- Iris of eye
- Walls of blood vessels
|
| back 7 - Located only in the heart
- Muscle fibers joined
together by intercalated discs
- Fibers branch
- Network of fibers contracts as a unit
- Self-exciting and
rhythmic
- Longer refractory period than skeletal muscle
|
front 8 Tissues of the muscular system: | back 8 - Skeletal muscle tissue
- Nervous tissue
- Blood
- Connective tissues
|
front 9 Types of dense, white, fibrous connective tissue found in skeletal
muscles throughout body: | back 9 - Fascia—layered; covers all muscles
- Tendons—cordlike;
connects muscle to bone
- Aponeuroses—sheetlike; connects
muscle to muscle
|
front 10 Connective tissues found covering individual muscles: | back 10 - Epimysium
- Perimysium
- Endomysium
|
| back 11 - Fascicles
- Muscle fiber (muscle cell)
- Myofibrils
- Thin and thick myofilaments
- Actin (thin) and myosin (thick) proteins
|
| back 12 - I band (actin-thin)
- A band (myosin-thick and
actin-thin)
- H zone (myosin-thick)
- Z line (actin
disc)
- M line (myosin)
|
| back 13 - Composed of myosin protein
- Form the cross-bridges
|
| back 14 - Composed of actin protein
- Associated with troponin and
tropomyosin proteins
|