Chapter 8 Part 1a

Question 1

What is the contractility of muslce tissue?

Answer 1

It’s ability to contract

Question 2

What is a unique quality of muscular tissue?

Answer 2

It responds by contracting

Question 3

What are the four properties of muscular tissue?

Answer 3

electrical excitability
contractility
extensibility
elasticity

Question 4

What are the functions of the muscular tissue?

Answer 4

body movements
stability
storing and mobilizing substances
opening and closing of ducts
generating heat

Question 5

Is skeletal muscle considered voluntary?

Answer 5

Yes

Question 6

is skeletal muscle striated or non striated and what does it attach to?

Answer 6

it’s striated attached to bones

Question 7

what does the prefix myo stand for?

Answer 7

muscle

Question 8

name the pink highlighted part

Answer 8

tendon

Question 9

name the pink highlighted part

Answer 9

epimysium

Question 10

name the pink highlighted part

Answer 10

fascicle

Question 11

name the pink highlighted part

tissue surrounding the fascicle

Answer 11

perimysium

Question 12

name the pink highlighted part

between individual muscle fibers

Answer 12

endomysium

Question 13

name the pink highlighted part

Answer 13

muscle fiber

Question 14

name the pink highlighted part

Answer 14

epimysium

Question 15

name the pink highlighted part

Answer 15

perimysium

Question 16

name the pink highlighted part

Answer 16

endomysium

Question 17

name the pink highlighted part

Answer 17

a fascicle or the muscle fiber inside the fascicle

Question 18

what is the fascicle wrapped in

Answer 18

perimysium

Question 19

where is the endomysium located?

Answer 19

between muscle fibers

Question 20

what are muscle fibers also referred to as?

Answer 20

muscle cells

Question 21

what are muscle fibers also known as?

Answer 21

myofiber

Question 22

what does the prefix sarco stand for?

Answer 22

muscle cell

Question 23

what is the cell membrane of a muscle cell called?

Answer 23

sarcolemma

Question 24

what is the fluid inside a muscle cell called?

Answer 24

sarcoplasm

Question 25

what do we find inside a muscle cell?

Answer 25

myofibril
mitochondria
nuclei

Question 26

name the pink highlighted part

Answer 26

sarcolemma

Question 27

name the pink highlighted part

Answer 27

mitochondria

Question 28

name the pink highlighted part

Answer 28

myofibril

Question 29

name the pink highlighted part

Answer 29

nucleus

Question 30

what is this structure

Answer 30

muscle fiber (muscle cell)

Question 31

name the pink highlighted part

Answer 31

nucleus

Question 32

name the pink highlighted part

Answer 32

myofibril

Question 33

name the pink highlighted part

Answer 33

striations

Question 34

name the pink highlighted part

Answer 34

myofilaments

Question 35

what are the two major myofilaments?

Answer 35

actin (thin)
myosin (thick)

Question 36

name the pink highlighted region

Answer 36

sarcomere

Question 37

name the pink highlighted region

Answer 37

thin filament (actin)

Question 38

name the pink highlighted region

Answer 38

thick filament (myosin)

Question 39

name the pink highlighted regio

top pink highlight

Answer 39

thin filament (actin)

Question 40

name the pink highlighted region

top pink highlight

Answer 40

thick filament (myosin)

Question 41

is this a thick (myosin) filament or a thin (actin) filament

Answer 41

thick (myosin)

Question 42

what is the pink highlighted section called?

Answer 42

myosin head

Question 43

is this a thick (myosin) filament or a thin (actin) filament

Answer 43

thin (actin)

Question 45

how do the myocin heads interact with the actin?

Answer 45

myocin heads attach to and embed in the actin

Question 46

what are these edges of the sarcomere called?

Answer 46

z discs

Question 47

what are the thin and thick filaments called on the sarcomere?

Answer 47

myocin and actin

Question 48

name the pink highlighted part of the sarcomere

Answer 48

titin

Question 49

how does the titin work

Answer 49

connects thick filament to the z disc
runs through the core of thick filament
responsible for stretch and recoil of the muscle

Question 50

name this structure

Answer 50

sarcomere

Question 51

name the pink highlighted part of the sarcomere

describe it

Answer 51

z disc

zig zag shape material that separates one sarcomere from another

Question 52

name the pink highlighted region of the sarcomere made of
thick (myosin) filaments

describe it

Answer 52

A band

section of sarcomere made of thick filaments and a small part of the thin filament that overlaps the thick filament

Question 53

name the pink highlighted region of the sarcomere made of
thin (actin) filaments

describe it

Answer 53

I Band

part of sarcomere that contains the thin filaments. Z disc passes through the center of each I band

Question 54

name the pink highlighted region of the sarcomere

describe it

Answer 54

H zone

small region down the cetner of the A band containing thick filaments only

Question 55

what region of the sarcomere is in the center of the H zone?

describe it

Answer 55

M line

section right down the center of the H line that contains proteins that hold the thick filaments together at the center of the sarcomere

Question 56

name the pink highlighted part

Answer 56

actin