muscles2

Question 1

Layers of dense connective tissue that separates individual skeletal muscles and hold it in position

Answer 1

Fascia

Question 2

broad fibrous sheets that may attach to bone or coverings of other muscle

Answer 2

Aponeuroses

Question 3

connective tissue that closely surrounds skeletal muscles

Answer 3

Epimysium

Question 4

connective tissue extend inward separate muscle tissue

Answer 4

Perimysium

Question 5

Fascicle

Answer 5

Skeletal muscle fibers

Question 6

connective tissue that encloses and separates all parts of a skeletal muscle

Answer 6

Endomysium

Question 7

What are all the connective tissue coverings of muscles and what do they do?

Answer 7

Fascia-separates individual skeletal muscles and hold it in position

Question 8

closely surrounds skeletal muscles

Answer 8

Epimysium

Question 9

Perimysium-extend inward

Answer 9

separate muscle tissue

Question 10

encloses and separates all parts of a skeletal muscle

Answer 10

Endomysium

Question 11

What is a skeletal muscle fiber?

Answer 11

a single cell that contracts in response to stimulation and relaxes when the stimulation ends

Question 12

cell membrane of a muscle cell

Answer 12

Sacrolemma

Question 13

cytoplasm of a muscle cell

Answer 13

Sarcoplasm

Question 14

What are myofibrils and what do they do?

Answer 14

They are muscle fiber that consist 2 protein filaments and the role they play is to contract muscle

Question 15

Describe the protein filaments in Myofibrils

Answer 15

Myosin is a protein that makes up thick filaments

Question 16

is a protein that makes up thin filaments they are organized into light and dark alternating striations of skeletal muscle fiber

Answer 16

Actin

Question 17

the protein filaments inside a myofibril that are organized into repeating functional units

Answer 17

Sarcomeres

Question 18

What are the two main parts of the striations of skeletal muscle fiber?

Answer 18

I bands and A bands

Question 19

What are I-Bands?

Answer 19

light bands made of actin filiments and are directly attached to Z-lines

Question 20

What are A-bands?

Answer 20

dark bands made of overlapping myosin filaments has m-lines in the center

Question 21

What does an M-line do?

Answer 21

A M-line is a protein in the center of an A-band that holds the thick filaments in place.

Question 22

Z-line to Z-line is what?

Answer 22

Sarcomere

Question 23

Sarcoplasmic Reticulum are formed by what?

Answer 23

membranes that surround each myofibril and run parallel to it

Question 24

Transverse Tubules (T tubules)

Answer 24

membranous channels that extend inward and passes all the way through the fiber opens to outside contains extracellular fluid

Question 25

Two enlarged portions of the SR

Answer 25

Cisternae or SR

Question 26

What stimulates the muscle fiber to contract?

Answer 26

Diffusion of neurotransmitter to the muscle fiber membrane.