Know Thy Cells! Oophorus. A group or “cloud” of granulosa cells that surround the oocyte in a growing (tertiary) follicle or a Graafian follicle. Visualhistology.com

Ptyalin. An amylase, found in saliva, that converts starches into sugars. Know Thy Cells at visualhistology.com

Know Thy Cells? Flagellum. A long, thin, whiplike, motile extension of the surface of certain cells (such as spermatozoa); it has an axoneme like that of a motile cilium. Learn at visualhistology.com

Know Thy Cells! Henle. A thin tube of the nephron that connects the proximal and distal tubules. Learn Histology at WatchNow at visualhistology.com

Infundibulum. A funnel or funnel-shaped structure or passage; a generic term that applies to structures found in a variety of organs such as the kidney, oviduct, and pituitary gland. visualhistology.com

Know Thy Cells Visualhistology.com Inner Nuclear Layer. A histologically distinct region of the retina that contains the nuclei of the bipolar, amacrine and horizontal cells.

Trophic Hormone. A hormone secreted by one gland that stimulates secretion of a hormone by another gland. Example: thyroid-stimulating hormone (TSH), released by the anterior pituitary, stimulates secretion and release of thyroid hormone from the thyroid gland.

Filiform Papillae. Tiny projections atop the tongue, devoid of taste buds, that give the tongue its feltlike texture. visualhistology.com

Know Thy Cells! Osteoid. Newly secreted, unmineralized bone matrix, made largely of collagen, that provides a site for deposition of hydroxyapatite crystals during the mineralization process.

From one of our Northern neighbors. 🇨🇦🙏🏼🇺🇸

BREAKING: WHO Director-General Tedros Adhanom Ghebreyesus will convene an Emergency Committee on the novel #coronavirus (2019-nCoV) under the International Health Regulations. The Committee will meet on Wednesday, 22 January 2020.

Sorry, Seniors: Trump Casually Confirms Medicare Is on the Chopping Block 🔪 vanityfair.com/news/2020/01/d…

After listening to the President’s lawyers opening arguments, I have three observations: They don’t contest the facts of Trump’s scheme. They’re trying to deflect, distract from, and distort the truth. And they are continuing to cover it up by blocking documents and witnesses.

I join the rest of Los Angeles in mourning the tragic death of Kobe Bryant, his daughter, and others. One of the greatest basketball players of all time, Kobe had a grace and athleticism unmatched in the NBA. My prayers are with his family and friends, and all Lakers fans.

Kobe was a legend on the court and just getting started in what would have been just as meaningful a second act. To lose Gianna is even more heartbreaking to us as parents. Michelle and I send love and prayers to Vanessa and the entire Bryant family on an unthinkable day.

Barack Obama President Obama is our moral Commander-in-chief during unimaginable heartbreaking times like this. Thank you, Mr. President, for helping us through this as a nation.

Trump's defense boils down to this: Sure, the President did it. We all know he did it. We just don't want the American people to see even more evidence that he did it. Besides, he is allowed to do whatever he wants. Get over it. Well, the American people know better.

Large silent crowd gathered in the Hart Senate Office Building here in Washington DC. There isn’t a court in the land that refuses to allow witnesses, but the GOP and Trump think they are above the law. We are here to say that they are not. #WeWantWitnesses

We aren't allowed to talk or stand in straight lines. We've been reduced to swarming silently to avoid being arrested.

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