Ch 9

Question 1

What is the general function of skeletal muscles?

Answer 1

attach to bones and skin of face

Question 2

Voluntary or involuntary?

Answer 2

voluntary

Question 3

What 4 things are skeletal muscles composed of?

Answer 3

• skeletal muscle tissue
• nervous tissue
• blood
• connective tissue

Question 4

Covers each muscle:

Answer 4

fascia

Question 5

Attach muscle to bone:

Answer 5

tendons

Question 6

Sheets that connect muscle in trunk and head:

Answer 6

aponeuroses

Question 7

(muscle covering) Surrounds whole muscle:

Answer 7

epimysium

Question 8

(muscle covering) Surrounds fascicles within a muscle:

Answer 8

perimysium

Question 9

(muscle covering) Surrounds muscle fibers within a fascicle:

Answer 9

endomysium

Question 10

List the 5 connective tissue covering things from biggest to smallest.

Answer 10

Muscle——> Fascicles—–> Muscle fibers (cells)—–> Myofibrils—–> Thick and thin filaments

Question 11

Structures containing the contractile proteins actin and myosin:

Answer 11

thick and thin filaments

Question 12

Overlapping parallel groups of thick and thin filaments in a repeating pattern; the underlying basis for the striation pattern:

Answer 12

myofibril

Question 13

A single muscle cell, multinucleate and may be many centimeters long:

Answer 13

muscle fiber

Question 14

A bundle of muscle fibers within a muscle:

Answer 14

fascicle

Question 15

A bundle of fascicles:

Answer 15

muscle

Question 16

Where are thick and thin filaments located?

Answer 16

intracellular

Question 17

Where are myofibrils located?

Answer 17

intracellular

Question 18

Where are muscle fibers located?

Answer 18

in a muscle, surrounded by endomysium

Question 19

Where are fascicles located?

Answer 19

in a muscle, surrounded by perimysium

Question 20

Where are muscles located?

Answer 20

surrounded by epimysium

Question 21

Skeletal muscle fibers=

Answer 21

muscle cell

Question 22

What kind of nucleus do muscle fibers have?

Answer 22

multinucleated

Question 23

(skeletal muscle fibers) Sarcolemma:

Answer 23

membrane

Question 24

(skeletal muscle fibers) Sarcoplasm:

Answer 24

cytoplasm

Question 25

(skeletal muscle fibers) Sarcomeres:

Answer 25

contractile unites

Question 26

(skeletal muscle fibers) Sarcoplasmic reticulum:

Answer 26

specialized ER and stores calcium ions

Question 27

(skeletal muscle fibers) Transverse tubule:

Answer 27

sarcolemma goes deep into muscle fibers

Question 28

(skeletal muscle fibers) Triad:

Answer 28

1 T tubule and 2 SR cisternae

Question 29

What do skeletal muscle fibers contain a lot of?

Answer 29

myofibrils

Question 30

What 2 things do myofibrils consist of?

Answer 30

• thin actin filament

- thick myosin filaments