Glossary

Rheumatoid factor

Rostral interstitial nucleus of medial longitudinal fasciculus – a portion of the medial longitudinal fasciculus which controls vertical gaze.

Ribonucleic acid – is a ubiquitous family of large biological molecules that perform multiple vital roles in the coding, decoding, regulation, and expression of genes.

RNA interference – this is a process where RNA molecules inhibit (interfere) gene expression, usually by destroying the mRNA involved in the expression.

Respiratory syncytial virus – a virus that causes infections in the respiratory tract infections. There is typically an epidemic during the winter months in temperate clinics and during the rang season in tropical climates. By the age of 3 most children will have been infected by this virus.

The two ventral protuberances seen within the Aqueduct of Sylvuis’s adytum or inlet. They are due to the rubral nuclei bulging into the lumen of the aqueduct.

If the sum of the measurements of the amount that the lateral masses of C1 hang over the lateral edge fo the C2 lateral masses by more than 6.9 mm then there is concern for injury to the transverse ligament and either flexion and extension imaging or a MRI scan should be obtained.

Synthesis phase in cell replication cycle – This is the phase in cell replication when DNA synthesis occurs.

Single cysticercal granuloma.

Two-dimensional imaging of emission of radioisotopes after their administration internally into a human.