Structures Of Skeletal Muscle

Question 1

In vertebrates, skeletal muscle consists of parallel bundles of muscle fibers surrounded by

Answer 1

Sheath of insulating connective tissue

Question 2

The parallel bundles of muscle fibers are called _

Answer 2

Myofibrils

Question 3

_ is outer layer of connective tissue

Answer 3

Fascia

Question 4

_ is sheath of tissue around muscle

Answer 4

Epimysium

Question 5

Whole muscle is made up of _ bundles of muscle fiber

Answer 5

Fasciculi

Question 6

Fascicle is a single bundle of _

Answer 6

Muscle fibers

Question 7

Muscle fiber is formed from many _

Answer 7

Merged muscle cells

Question 8

_ supply muscle fiber with oxygen and nutrients

Answer 8

Capillaries

Question 9

Cytoplasm of muscle cells is called

Answer 9

Sarcoplasm

Question 10

Sarcoplasm contains many (2)

Answer 10

Nuclei

Mitochondria

Question 11

Myofibril is fiber containing filaments of (2)

Answer 11

Actin

Myosin

Question 12

Sarcomere is basic _ unit of a muscle fiber

Answer 12

Contractile

Question 13

Sarcomeres run from one _ to the next

Answer 13

Z disc

Question 14

M line connects thick _

Answer 14

Myosin filaments

Question 15

Z disc anchors thin _

Answer 15

Actin filaments

Question 16

Thin filament is mainly composed of

Answer 16

Actin protein

Question 17

Thick filament is composed of _

Answer 17

Myosin protein