Muscle Cells (Sarcomere)

A bundle of muscle fibers

• sarcomere

• fascicle

• myofibril

• endomysium

 Thin filaments that form the I band of the sarcomere

• Actin

• Z-disc

• sarcolemma

• Myosin

 Thick filaments that form the A band of the sarcomere:

• Actin

• Z-disc

• sarcolemma

• Myosin

The contractile unit of a muscle fiber:

• sarcolemma

• endomysium

• myocyte

• sarcomere

The border between two sarcomeres is the:

• A Band

• I Band

• Z line

• H band

Label the Muscle

b

c

d

e

a

Myofibril

Perimysium

Myofilament

Epimysium

Endomysium

Label the image

d

e

f

g

c

b

a

Myofilament

Sarcoplasm

Sarcolemma

Myofibril

Sarcomere

T Tubule

Sarcoplasmic Reticulum

A muscle cell is called a:

• monocyte

• neuron

• myocyte

• leukocyte