Starting a Contraction
Sarcomere Activity
Skeletal Muscles
Smooth Muscles
Cardiac Muscle
100

For a neuron to stimulate a skeletal muscle cell, first a(n) _________________ must run down the axon of the neuron.

What is action potential

100

A series of sarcomeres create this long filament found in muscle cells.

What is a myofibril?

100

Are skeletal muscles voluntary or involuntary?

Skeletal muscles are largely voluntary muscles.

100

Are smooth muscles voluntary or involuntary?

Smooth muscles are involuntary.

100

Is the cardiac muscle voluntary or involuntary?

The cardiac muscle is involuntary.

200

Synaptic vesicles release this/these into the synapse in order to stimulate a skeletal muscle cell.

What is neurotransmitters (also can accept acetylcholine)

200

The motion of thin filaments over thick filaments is represented by this.

What is the Sliding Filament Mechanism?

200

Skeletal muscle is stimulated by this nervous system

What is somatic nervous system?

200

Smooth muscle is stimulated by this nervous system

What is autonomic nervous system?

200

This nervous system stimulates cardiac muscle.

What is autonomic nervous system?

300

Neurotransmitters land on this part of the sarcolemma of a skeletal muscle cell.

What is a motor end plate?

300

This filaments are largely this protein __________, while thick filaments are largely this protein_________.

What are thin filaments are largely actin and thick filaments are largely myosin.

300

Why is the word "skeletal" used in describing skeletal muscle?

What is because it is most often attached to the skeleton of the body?

300

This is where smooth muscle is found.

What is hollow organs and blood vessels?

300

Where is cardiac muscle tissue found

What is it makes up the walls of the heart?

400

After neurotransmitters land on a skeletal muscle cell, an electrical impulse (or action potential) runs down the length of these tubes.

What are T tubules?

400

If calcium is not present in the myofibrils, then this specifically cannot happen.

What is myosin heads cannot attach to the thin filaments.

400

True or False: a skeletal muscle cell is multi-nucleated

What is true?

400

True or False: A smooth muscle cell is multi-nucleated

What is false?

400

True or false: A cardiac muscle cell is multi-nucleated

What is false

500
As an electrical impulse runs down the tubes of a skeletal muscle cell, this organelle is stimulated to release calcium ions.

What is SR or Sarcoplasmic Reticulum?

500

When thin filaments are moved, they are done so toward this center line and they are dragging these lines being them.

What is they are moving towards the M line of the sarcomere and they are dragging the Z lines (or Z discs) behind them?

500

True or False: Adult skeletal muscle cells cannot undergo meiosis

What is true?

500

True or False: Because smooth muscle cells lack a striated appearance, this means they lack contractile proteins

What is false?

500

These are structures that join adjacent cardiac muscle cells and allow for rapid transport of calcium ions

What are intercalated discs?