My Dictionary #3

Since the last time I posted in "My Dictionary," I've come across a few new and unfamiliar words in class and in my study of histology.

These words are:

(1) Tonofilaments making up the intercellular bridges

1. Tonofilaments:
A tonofilament is developed in the epidermis layer of the skin, specifically in the stratum spinosum, which is the second deepest layer in the epidermis. In this layer, the cytoplasm is filled with keratin bundles that are known as tonofilaments. Tonofilaments also are the intercellular bridges in this layer and are made up of various proteins and keratin.

(2)

2. Gingiva:

Also sometimes known as the gums, the gingiva surrounds and is firmly attached to the teeth and the bones around the teeth. It has three components (as seen on the picture to the left): free gingiva, interdental gingiva, and attached gingiva. The gingiva is bound to the underlying cementum and the alveolar bone.

(3)

3. Peyer's Patches:
Found in the ileum of the small intestine, the Peyer's patches are the many areas in the lymphoid  tissue that interact with the development of immunity to antigens present there. These Peyer's patches contain numerous lymph nodules, obviously in order to fulfill their duty.



Picture references:

(1) https://o.quizlet.com/i/q6ru-1iunk59zCBULM8fsw_m.jpg

(2) http://periobasics.com/wp-content/uploads/2013/08/Gingiva.jpg

(3) http://medcell.med.yale.edu/systems_cell_biology/gi_tract_lab/images/ileum_labels.jpg