chapter 9 skeletal muscle tissue

The region of the sarcomere containing the thick and thin filaments is the

A Band

Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for

Contraction

Skeletal muscle fibers are formed from embryonic cells called

Myoblasts

At each end of the muscle, the collagen fibers of the epimysium, and each perimysium and endomysium, come together to form a

Tendon

The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)

Tendon

The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the

Endomysium

Nerves and blood vessels that service the muscle fibers are located in the connective tissues of the

Perymysium

The plasma membrane of skeletal muscle is called the

Sacrolemma

The advantage of having many nuclei in a skeletal muscle fiber is the ability to

The ability to produce large amounts of the enzymes and structural proteins needed for contraction.

The repeating contractile unit of a skeletal muscle fiber is the

sacromere

Individual muscle cells are surrounded by what connective tissue?

endomysium

Muscle fibers differ from "typical cells" in that muscle fibers

have many nuclei

The area in the center of the A band that contains no thin filaments is the

H band

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

I Band

Each skeletal muscle fiber contains ________ myofibrils.

hundreds to thousands

The skeletal muscle complex known as the triad consists of

B) a transverse tubule and two terminal cisternae.

2) Which of the following statements is incorrect? A) The contractions of skeletal muscles pull on tendons and move bones of the skeleton. B) Skeletal muscles store nutrient reserves. C) Skeletal muscles are responsible for the pumping action of the heart. D) Skeletal muscles support the weight of some internal organs. E) Skeletal muscle contractions help maintain body temperature.

C) Skeletal muscles are responsible for the pumping action of the heart.

1) Which of the following is a recognized function of skeletal muscle? A) produce movement B) maintain posture C) maintain body temperature D) guard body entrances and exits E) All of the answers are correct.

E) All of the answers are correct.

The dense layer of connective tissue that surrounds an entire skeletal muscle is the

Epimysium

________ are stem cells located between the endomysium and sarcolemma that function in the repair of damaged muscle tissue.

Myosatellite cells

Which of the following best describes the sarcoplasmic reticulum?

storage and release site for calcium ions