muscular system

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the energy that is needed for muscle contraction to occur comes from

ATP

what chemical supplies the energy for muscle contraction

ATP

the neurotransmitter that functions to stimulate the muscle fiber during contraction is

acetylcholine

the globular protein filament is

actin

which filament is the tropinin and tropomysin complex located on

actin

two types of filaments are

actin and myosin

the fascia that extends beyond the muscle and attaches to another muscle is

aponeuroses

what signals the active site on the actin to close during a muscle relaxation

calcium gets pumped into the sarcoplasmic reticulum

what are the two chemicals responsible for muscle contraction

calcium ions and acetylcholine

involuntary, banded appearance, contracts as one unit

cardiac

ATP is regenerated from ADP with help of

creatine phosphate

what chemical regenerates ATP

creatine phosphate

what will occur within a muscle cell during oxygen debt

decreased ATP, increases lactic acid, decreased oxygen, increased carbon dioxide

the covering that separates one muscle from another

epimysium/fascia

outer most to inner most

fascia, epimysium, perimysium, endomysium, sarcolemma

a muscle that has lost its ability to contract due to an increase in lactic acidosis is

fatigued

within myofibrils are

filaments

where is acetylcholine released from during the muscle contraction

from the nerve fiber containing vesicles that goes to the motor plate

the oxygen carrying molecule in blood is

hemoglobin

aerobic respiration has a ___ ATP yield

high

anaerobic respiration has a ___ ATP yield

low

the location on a muscle fiber where a junction forms is the

motor end plate

a single muscle cell is represented by

muscle fiber

largest to smallest

muscle, fascicle, muscle fiber, myofibril, filament

the oxygen carrying molecule is muscle tissue is

myoglobin

the protein filament that contains crossbridges is

myosin

what are two fibers that join during muscle contraction

myosin and actin

the site where a nerve fiber and muscle fiber meet is called

neuromuscular junction

what does the troop in and tropomysin complex do during muscle contraction

opens the active site

lactic acid accumulation results in

oxygen debt

the cell membrane of a muscle cell is known as the

sarcolemma

the cytoplasm of a muscle cell is called the

sarcoplasm

calcium ions are stored in the ____ prior to muscular contraction

sarcoplasmic reticulum

where is calcium released from during the muscle contraction

sarcoplasmic reticulum

banded appearance, voluntary, moves bones, referred to as the muscular system

skeletal

involuntary, lines hollow internal organs

smooth

the fascia that extends beyond the muscle and attaches to the bone is a

tendon

how does nerve fiber stimulation stop during muscle relaxation

the cholinestrease decomposes the acetylcholine


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