Muscles

Front 1

motors

Back 1

control muscle fibers for movement

Front 2

fibers

Back 2

extension, axons of nerve cells

Front 3

motor unit

Back 3

group of muscle cells that are controlled by single motor neutron

Front 4

small motor units

Back 4

small muscles ex. 5 muscle fibers

Front 5

large motor units

Back 5

large muscle of leg (over 1500 fibers)/fine tune for power

Front 6

curare

Back 6

block acetyleholine receptor so muscles cant contract

Front 7

nerve gas

Back 7

inhibits acetylcholinesterase. are frozen in contraction

Front 8

ach

Back 8

neurotransmitter emssenger beween nerves to muscles, constantly destroyed by acetylcholinesterase

Front 9

muscle contraction by nervous system

Back 9

trigger release of calcium, ach released end of nerve fiber

Front 10

rigor mortis

Back 10

after 6 hours muscles contract and cause movement. ca leaks from dying tissue triggering contraction by aallowwing cross bridge to form.
NO ATP

Front 11

Troponin

Back 11

binds ca++ ions

Front 12

cross bridge cycle

Back 12

1. ca++ binds to troponin moving tropomysin to make cross bridge sites ready
2. myosin heads to bind sites and form cross bridges with actin
3. cross bridges pull on actin
4. atp binds the myosin, heads and caused them to release actin
5. atp-adp donates energy to cock the myosin bridge and prime to pull in next step

Front 13

tropomyosin

Back 13

uncovers the myosin to make bridge binding sites available

Front 14

ca++

Back 14

control muscle contractions

Front 15

atp

Back 15

release of crossbridge and provides energy

Front 16

aponeurosis

Back 16

no tendon in epimysium, flat and connects muscles to muscles