Thyroid Gland Anatomy Lecture I Review

What influences the size and shape of the thyroid gland?

• Diet

• Body habitus

• Age

• Exercise

In what percentage of thyroids is a pyramidal lobe present?

• 5% to 10%

• 15% to 30%

• 35% to 50%

• 55% to 70%

What is the typical anteroposterior measurement of the thyroid isthmus?

• 1-3 mm

• 2-6 mm

• 3-5 mm

• 4-8 mm

How do the strap muscles appear in relation to the gland?

• As thick, hyperechoic bands

• As thin, hypoechoic bands

• As round, hyperechoic bands

• As flat, hypoechoic bands

Which artery is typically located infero-posterior to the thyroid and parathyroid gland, and lateral to the esophagus?

• Inferior thyroid artery

• Carotid Artery

• Sternohyoid artery

• Radial artery

What role does thyrocalcitonin play in the body?

• Regulates blood sugar levels

• Assists in the absorption of calcium from the blood for storage in the bones

• Controls the sleep-wake cycle

• Increases heart rate

Where do the inferior thyroid arteries originate?

• External carotid arteries

• Internal jugular veins

• Thyrocervical trunk of the subclavian artery

• Aorta

Which artery is closely associated with the thyroid gland and typically seen just lateral or slightly posterior?

• Common carotid artery

• Pulmonary artery

• Femoral artery

• Coronary artery

What is one of the post-surgical complications that ultrasound can help assess?

• Infection

• Abscess

• Hemorrhage

• Scarring

What additional equipment might be necessary according to the transducer and machine used?

• Low-flow filter

• Water path or standoff pad

• High-frequency amplifier

• Color gain optimizer