An Asymptomatic 2 * 3 Cm Mass in the Lateral

question 1

Multiple Choice

An asymptomatic 2 * 3 cm mass in the lateral neck of a 25-year-old man was biopsied. Microscopically, it was a cyst surrounded by lymphoid tissue. The diagnosis would be:

• A) Epidermal inclusion cyst
• B) Ectopic lymphoid tissue
• C) Branchial cyst
• D) Thyroglossal tract cyst
• E) Dermoid cyst

---

Definitions:

Resting Potential

The state of the neuron when not firing a neural impulse.

Neurotransmitter

Chemical substances that transmit nerve impulses across a synapse from one neuron to another.

Synaptic Vesicles

Membrane-bound sacs within the neuron that store neurotransmitters, which are chemicals involved in transmitting messages across the synaptic gap.

Resting Potential

The electrical charge of a neuron when it is not active or transmitting an impulse, representing the difference in electric potential across the neuron's membrane.