Muscular System part 2

Energy source for muscle contraction

• Ca+

• ATP

• ADP

• All are energy sources

Tags

NGSS.HS-LS1-7

When a muscle gets _____ then it gets _____

• a stimulus, Ca+

• a stimulus, ATP

• ATP, a stimulus

• Ca+, ATP

Calcium is stored in the _____

• sarcoplasmic reticulum

• ATP

• Myosin

• Actin

ATP is stored _____.

• in the muscle cell.

• in the sarcoplasmic reticulum

• in the t tubules

• in the neuromuscular junction

_____ makes proteins able to bind and unbind to different structures

• The ability to change shape

• The ability to make ATP

• The ability to make myosin

• The ability to make actin

Tags

NGSS.HS-LS1-1

When the muscle gets ready to contract,

• a message is sent from the CNS to the brain

• The ATP splits into ADP and P

• crossbridges are formed

• the actin binding sites are covered by tropomyosing

When Ca+ attaches to the actin protein,

• actin binding sites are uncovered

• myosin heads release ATP

• crossbridges form

• ADP is released

Ca+ actually binds to _____ allowing muscles to contract.

• tropomyosin

• troponin

• ATP

• Myosin head

The muscles that are responsible for the movement

• Prime movers

• antagonist

• synergist

• fixator

When a muscle contracts, the portion of the muscle that doesn't move is called _____.

• origin

• insertion

• fixator

• isotonic