ex 3

During appositional growth

• bones grow longer.

• cartilage replaces bone

• bones grow wider.

• compact bone replaces spongy bone

The skeletal muscle complex known as

the triad consists of

• actin, myosin, and sarcomeres

• filaments, myofib-rils, and sarcom-

  eres

• a transverse tubule and two terminal cisternae

• A bands, H bands, and I bands

In rigor mortis

• ATP is depleted

• All are correct

• calcium ions keep binding to tro-ponin

• the myosin heads are attached to actin

Phosphate transfer is used for

• long term ATP needs and is dependent on oxygen

• immediate ATP

  needs and is not dependent on oxygen

• long term ATP needs and is not dependent on the presence of oxygen.

• immediate ATP

  needs and is dependent on oxygen

Tags

NGSS.HS-LS1-7

The lining of the medullary (marrow)

cavity is called the

• periosteum

• endosteum

• epimysium

• perichondrium

The region of the sarcomere that always contains thin filaments is the

• A band

• H band

• I band

• Z line

Which of the following is greater?

• the concentration of calcium in the sar-coplasm of a resting muscle

• the concentration of calcium in the SR of a resting muscle

The lacunae of osseous tissue contain

• bone marrow

• blood cells

• osteocytes

• chondroblasts

In adults, the medullary cavities of most long bones contain red marrow.

• true

• false

In the hierarchy of skeletal muscle fiber components, the myofibril is made up of myofilaments.

• true

• false