Sliding Filament Theory Review - SEHS Topic 4

What is Acetilcholine

• A hormone

• C6 H12 06

• A neurotransmitter

• A signaling receptor for the chemical compounds

The nervous impulse travels through

• The blood

• The wires

• The axon

• The special silken net

Calcium ions are released

• When the muscle receives an impact

• When norepinephrine is released

• When cholinesterase is released

• When acetylcholine is released

What is labeled 3?

• Z band

• H zone

• Actin

• Myosin

What is labeled 4?

• Myosin

• Actin

• Thin filament

• L line

When the muscle contracts...

• A band enlarges

• A band shortens

• I band shortens

• It may depend

Nervous signals come from

• The brain

• The pancreas

• The spinal cord

• The inner ear

What is a motor end plate?

• A modified area of the muscle fibre membrane at which a synapse occurs.

• The structure of the muscle with stacks of sarcomeres

• The functional unit of the muscle fiber

• The axon which is surrounded by myelin sheaths

Draw a scheme of the Sliding Filament Theory

Explain the sequence of muscle stimulation and contraction