Which of the Following Muscles Most Likely Contains Motor Units

question 4

Multiple Choice

Which of the following muscles most likely contains motor units that are relatively small (motor neurons that innervate only a small number of muscle fibers each) ?

• A) the biceps femoris.
• B) the trapezius.
• C) the intrinsic hand muscles.
• D) the latissimus dorsi
• E) the sternocleidomastoid.

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Definitions:

Allele Typing

The process of determining the variations of genes at specific loci in the DNA sequence, used in genetic research and forensics.

Cystic Fibrosis

A genetic disorder that affects mostly the lungs, but also the pancreas, liver, kidneys, and intestine, leading to severe respiratory and digestive problems.

Lethal Genetic Defect

A genetic mutation that is directly responsible for causing death, often before birth.

Genetic Imprinting

A process by which certain genes are expressed in a parent-of-origin-specific manner.