BIOL 210 Lecture Exam 3- Anatomy of skeletal muscle

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tropomyosin

Mitochondria

Myofibrils

Sarcolemma

Transverse Tubule

Z disc/line

Z disc/line

Sarcoplasmic reticulum

Blood Vessel

Endomysium

Muscle Fiber

Perimysium

Smooth

What type of muscle cell is pictured?

Skeletal

What type of muscle cell is pictured?

Cardiac

What type of muscle cell is pictured?

Epimysium

What part does the arrow indicate?

Tendon

What part does the arrow indicate?

Perimysium

What part does the arrow indicate?

Fascicle

What part does the bracket indicate?

Epimysium

What type of connective tissue surrounds the skeletal muscle?

Perimysium

What type of connective tissue surrounds the fascicle or group of muscle cells?

Fascicle

What term is used to refer to a bundle of skeletal muscle cells?

Endomysium

What connective tissue separates and electrically insulates muscle cells from one another?

Sarcolemma

Sarcoplasmic reticulum

Mitochondria

Sites of ATP synthesis

Sarcolemma

Plasma membrane of the muscle cell

Fibers

Skeletal muscle cells

Sarcoplasmic reticulum

Interconnecting tubules of endoplasmic reticulum that surround each myofibril

T tubules

tunnels that form a passageway through the muscle fiber

Myofibril

long thin collections/fibers of protein inside a muscle cell

Actin

Protein that makes up most of the thin filaments

Myosin

Protein that makes up most of the thick filaments

I band

Letter A:

A band

Letter B:

Z line

Letter C:

Sarcomere

Letter D:

Sarcomere

Repeating units within a myofilament, bundles of which make up a myofibril.

A band

The dark areas of a myofibril that corresponds to the areas where thick filaments are present

I band

The light areas of a myofibril that contain only thin filaments

Z line

A protein disk within the I band that anchors the thin filaments and connects adjacent myofibrils

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