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Thyroid and Parathyroid glands

Para = Next to

- Para-follicular = Next to Follicular cells 
- PAra-thyroid = Next to Thyroid

Location of Glands

Parathyroid gland 1. Parathyroid gland is located on back of Thyroid

Hormones of Thyroid and Para-Follicular

Follicular cells 

graph TD
    subgraph Thyroid
    A[Thyroid-Follicules] ==>A1[T3&T4];
    Ax1[Para-Follicular] ==>Ax2[Calcitonin];
    end
    subgraph Para-thyroid
    B[Parathyreoid gland] ==> B1[PTH];
    end
    X1[Thyoid Stimulating Hormones] -.->A;

Graves Disease

Graves Disease 1. TSH receptor mimicing antibodies leads to Incresed Thyroid hormone secretion 2. Hyperplasia of Follicular cells From cuboidal to Columnar and appreance of colloid absorption

Hashimoto Thyroiditis

  1. Antibodies against Thyroid follicular cells ,anti Thyroid Peroxidase antibodies
  2. Lymphocytic infiltrates with Germinal centres ,destruction of Follicular cells.

Para-Follicular cells

  1. Betweeen Thyroid Follicles

Para-Thyroid Gland

graph TD
    X[Parathyroid Gland] ==> X1[Cheif Cells] & X2[Oxyphil cells];
    X1 -.Produce.-> X1a[Parathyroid Hormone];
    X2 ==> X2a[Unknown];