Go on. Explore!

lvl 0 • 0 xp

lvl 1

Home Market Decks Interests

Muscle Contraction College Prep

memorize.ai (lvl 286)

Section 1

Preview this deck

Location of Ca2++ ions prior to muscle contraction

Front

1 / 40

0.0

0 reviews

5			0
4			0
3			0
2			0
1			0

Active users

All-time users

Favorites

Last updated

1 year ago

Date created

Mar 14, 2020

Cards (40)

Section 1

(40 cards)

Location of Ca2++ ions prior to muscle contraction

Front

sarcoplasmic reticulum

Back

Synaptic Cleft

Front

A narrow gap between the axon terminal of a neuron and a muscle fiber, across which neurotransmitters move to affect a cell

Back

relaxation and contraction

Front

muscle cells use ATP for:

Back

Myosin

Front

Thick filaments

Back

Neuromuscular Junction

Front

A synapse between axon terminals of a motor neuron and a sarcolemma of a muscle fiber. The site where the nervous system and muscular system interact.

Back

skeletal muscle

Front

A muscle that is attached to the bones of the skeleton and provides the force that moves the bones.

Back

Cross bridges

Front

Small bridge-like structures on myosin filaments that extend toward the actin filaments during muscle contraction.

Back

smooth muscle

Front

Involuntary muscle found inside many internal organs of the body

Back

Site of ATP binding and hydrolysis

Front

myosin cross bridge

Back

Acetylcholine (ACh)

Front

Neurotransmitter used to cross neuromuscular junction between nerve and skeletal muscle

Back

sacromeres

Front

a structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band.

Back

sliding filament model

Front

Actin myofilaments sliding over myosin to shorten sarcomeres

Back

Myofibrils

Front

Microscopic protein filaments that make up muscle cells.

Back

sarcoplasmic reticulum

Front

what is responsible for the active transport of Ca2+ out of the sarcoplasm at the end of the contraction cycle?

Back

Tendons

Front

Connect muscle to bone

Back

muscle fibers (cells)

Front

bundles of myofibrils

Back

Z Disc/ Line

Front

Marks where the sarcomere is.

Back

A Band

Front

Part of the sarcomere that contains actin and myosin, does not change in size when muscle is contracted.

Back

Sarcomere

Front

basic functional unit of muscle fiber

Back

I band

Front

Part of the sarcomere that contains just actin, this band shortens when a muscle is contracted.

Back

Sacrolemma

Front

plasma membrane of a muscle cell

Back

light and dark bands

Front

Give muscle cell, as a whole, its striped appearance

Back

Perimysium

Front

Connective tissue surrounding a fascicle

Back

cardiac muscle

Front

Muscle of the heart

Back

Myofilaments

Front

filaments of myofibrils, constructed from proteins, principally myosin or actin

Back

Epimysium

Front

surrounds entire muscle

Back

First sequence in muscle contraction

Front

Nerve stimulation at the neuromuscular junction

Back

Two Elements necessary for muscle contraction

Front

ATP and calcium

Back

Synaptic Vesicles

Front

Membrane-enclosed sac in a synaptic end bulb that stores neurotransmitters

Back

Endomysium

Front

surrounds each muscle fiber

Back

actin binding site

Front

place on the myosin head that physically makes contact with actin

Back

action potential

Front

The ______________ propagates along the plasma membrane

Back

Aponeuroses

Front

flattened tendons attaching muscles

Back

Rigor Mortis

Front

• Stiffening of the body beginning 3 to 4 hours after death • Deteriorating sarcoplasmic reticulum releases calcium after death. No additional ATP to detach myosin from actin.

Back

Actin

Front

Thin filaments

Back

motor unit

Front

A motor neuron and all of the muscle fibers it innervates

Back

Sarcolemma

Front

cell membrane of muscle cells

Back

Neurotransmitters

Front

A chemical released from presynaptic membrane and diffuses into the synaptic cleft stimulates (or inhibits) the production of an action potential in the postsynaptic membrane.

Back

H zone

Front

Part of the sarcomere that contains just myosin, this band shortens when a muscle is contracted.

Back

motor neuron

Front

a nerve cell forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle

Back