Physiology 2130 Lecture Notes - Lecture 3: Anterior Pituitary, Thyroid, Thyroid Cartilage

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

Pituitary gland: posterior pituitary, releases two peptide hormones - oxytocin and vasopressin, oxytocin - promoting uterine contraction and milk excretion, vasopressin - antidiuretic hormone. Thyroid gland: made up of three major pars, thyroid cartilage, thyroid gland (2 lobes) Follicular cells (acquiring/producing the building blocks: capillaries. Since thyroid hormone requires both iodide and tyrosine - these must be transported into the colloid. Iodide comes from salt in ones diet and travels in the blood - is transported into the colloid by active transport. Synthesis of thyroid hormones: t3 & t4 are both lipophilic. Iodide travels in the blood (where there is a low iodide concentration) then is transported into the follicular cells by active transport (due to the fact that there is a high iodide concentration in the cells) Iodide then travels into the colloid through the apical surface: the release of thyroglobulin (molecule containing tyrosine) is triggered by the binding of.