Huntington Disease Is an Example of a __________

question 70

Multiple Choice

Huntington disease is an example of a __________.

• A)disease caused by mutation
• B)polyglutamine expansion disease
• C)trinucleotide repeat disease
• D)all of these

---

Definitions:

A Band

Length of the myosin myofilament in a sarcomere.

H Zone

Area in the center of the A band in which there are no actin myofilaments; contains only myosin.

I Band

A region within the sarcomere of skeletal and cardiac muscles identified by its light appearance under a microscope, consisting mainly of actin filaments.

Neuromuscular Junction

The synapse or junction where a motor neuron transmits a signal to a muscle fiber, causing it to contract.