Changes

*[[Cardiorespiratory System Overview - Anatomy & Physiology#Upper Respiratory Tract|'''Respiratory system''']] - indirectly affected through increased BMR causing increased demand for oxygen and increased excretion of carbon dioxide.

*[[Cardiorespiratory System Overview - Anatomy & Physiology#Upper Respiratory Tract|'''Respiratory system''']] - indirectly affected through increased BMR causing increased demand for oxygen and increased excretion of carbon dioxide.

*[[Nervous and Special Senses - Anatomy & Physiology#Nervous System|'''Nervous system''']] - thyroid hormones are required for myelination of [[PNS Structure - Anatomy & Physiology#Neurons|neurons]] during the development of this system. They also enhance the sympathetic nervous system (by increasing epinephrine receptors).

*[[Nervous and Special Senses - Anatomy & Physiology#Nervous System|'''Nervous system''']] - thyroid hormones are required for myelination of [[PNS Structure - Anatomy & Physiology#Neurons|neurons]] during the development of this system. They also enhance the sympathetic nervous system (by increasing epinephrine receptors).

*[[Reproductive System - Anatomy & Physiology|'''Reproductive System''']] - reduced levels of thyroid hormone causes irregular cycling, decreased libido.

*[[Reproductive System Overview - Anatomy & Physiology|'''Reproductive System''']] - reduced levels of thyroid hormone causes irregular cycling, decreased libido.

*[[Alimentary System Overview - Anatomy & Physiology|'''Alimentary System''']] - Thyroid hormone increases appetite and feed intake, increases secretion of [[Pancreas - Anatomy & Physiology|pancreatic]] enzymes and increases motility.

*[[Alimentary System Overview - Anatomy & Physiology|'''Alimentary System''']] - Thyroid hormone increases appetite and feed intake, increases secretion of [[Pancreas - Anatomy & Physiology|pancreatic]] enzymes and increases motility.