Muscles 1

Front 1

1. produce skeletal movement

2. maintain body position

3. guard body openings

4. heat productino

5. maintain blood glucose levels

Back 1

functions of skeletal muscles

Front 2

muscle tissue

connective tissue

nerves

bood vessels

Back 2

muscles are organs compsed of:

Front 3

epimysium; fasciles

Back 3

entire muscle is surrounded by _____ and made up of _____

Front 4

perimysium; muscle fibers

Back 4

fasicle is surrounded by ____ and made up of ____

Front 5

endomysium; myofibrils

Back 5

muscle fiber is surrounded by _____ and made up of _____

Front 6

sacroplasmic reticulum; sarcomeres

Back 6

myofilmaments are surrounded by ____ and made up of _____

Front 7

epimysium

Back 7

connected to dep fascia and is a fibrous sheath surrounded by collagen layer

Front 8

perimysium

Back 8

contains blood vessels and nerve supply to fasciles

Front 9

endomysium

Back 9

contains cappillaries and nerve fibers connecting muscle cells (fibers)

Front 10

endomysium

Back 10

location of satellite cells

Front 11

aponeurosis

Back 11

flat collagen sheet like a wide tendon

Front 12

mesodermal; myoblasts

Back 12

skeletal muscle fibers form through fusion of _____ cells called ________

Front 13

sarcolemma

Back 13

cell membrande of muscle cell

Front 14

sarcoplasm

Back 14

cytoplasm of muscle cells

Front 15

transverse tubles (T tubles)

Back 15

inward foldings of sarcolemma that penetrate the cell and allow entire muscle fiber to contract simultaneously

Front 16

myofibrils

Back 16

bundles of protein filaments in muscle

Front 17

actin

Back 17

thin filaments are made of

Front 18

myosin

Back 18

thick filaments are made of

Front 19

sarcoplasmic reticulum

Back 19

structure surrounding each myofibril which transmits action potential and acts as a resevoir of Ca ions

Front 20

SR terminal cisternae

Back 20

chambers attached to T tubles which contain Ca ions

Front 21

muscular triad

Back 21

2 terminal cisernae + 1 T-tuble in the center

Front 22

z lines

Back 22

begining and end of sarcomeres

Front 23

sarcomeres

Back 23

form striations in muscle

Front 24

A bands

Back 24

dark bands

Front 25

I bands

Back 25

light bands

Front 26

m line

Back 26

at midline of sarcomere and connect thick filaments

Front 27

thin filaments, titin

Back 27

prioteins connected to Z lines

Front 28

tintin

Back 28

protein that stabilizes the thick filaments and centers it between the thin filaments

Front 29

A band

Back 29

band where thick filaments lie, including overlap with thin filaments

Front 30

H zone

Back 30

band where thickfilaments lie, but there are no thin filaments

Front 31

zones of overlap

Back 31

T-tubles encircle the sarcomere near ______

Front 32

F actin

Back 32

2 twisted rows of globular G actin

Front 33

nebulin

Back 33

holds F actin strands together

Front 34

tropomyosin

Back 34

a double stranded protein that prevents actin-myosin interaction

Front 35

troponin

Back 35

globular protein that binds tropomyosin to G actin; controlled by Ca+

Front 36

troponin; tropomyosin; F actin

Back 36

Initiating contraction: Ca+ binds to receptor on _____ which moves the _____ and exposes ______

Front 37

thick filaments

Back 37

titian strands are considered part of the

Front 38

cross-bridges

Back 38

when myosin heads interact with actin they form________

Front 39

sliding filament theory

Back 39

theory of how muscles contract