Since the First Patent Was Granted, There Have Been Over

question 71

Multiple Choice

Since the first patent was granted, there have been over ________ patents granted in the United States.

• A) 500,000
• B) 3 million
• C) 5 million
• D) 7 million
• E) 9 million

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Definitions:

Sarcoplasmic Reticulum

A specialized type of smooth endoplasmic reticulum found in muscle cells, involved in the storage and release of calcium ions during muscle contraction.

Postsynaptic Membrane

The part of the neuron or muscle cell that receives signals from the presynaptic neuron via neurotransmitters across the synaptic gap.

Acetylcholine

A neurotransmitter in the central and peripheral nervous systems, playing key roles in muscle activation, memory formation, and many other physiological functions.

Neurotransmitter

Chemical messengers that transmit signals across a chemical synapse from one neuron to another target neuron, muscle cell, or gland cell.