Civil Rights
Movements, leaders, victories and the continuing fight for equality.
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
In August 1908, a white mob attacked Springfield, Illinois’s Black community, destroying homes and businesses and lynching two Black men. National outrage over the violence helped spur the movement that created the NAACP the following year.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
In mammals, the Bötzinger complex (BötC) is a group of mainly expiratory neurons located within the ventral respiratory column in the rostral ventrolateral medulla (immediately caudal to the facial nucleus and ventral to the compact formation of the nucleus ambiguus).[1][2]
The Bötzinger complex plays an important role in controlling breathing[3][4] and response to hypoxia.[5][6] It consists primarily of glycinergic neurons[7] which inhibit the activity of inspiratory neurons. In the respiratory cycle, Bötzinger neurons show mainly E-augmenting or E-decrementing activity.[8][9][10]
The Bötzinger complex was named by the participants of a scientific meeting held in Hirschhorn in 1980 after a bottle of white wine named Botzinger present at the dinner table during the conference dinner.[11]
The Bötzinger Complex has projections to:
Only augmenting expiratory neurons of BötC, which are exclusively glycinergic, project to the phrenic nucleus.[21][14]
Projections to the Bötzinger complex include the nucleus tractus solitarii (NTS)[22][23] and VRG.[24]
These neurons may act as intrinsic pacemakers.[25] E-decrementing neurons display an initial burst of activity followed by decrease towards the end of expiration. Aug-E neurons begin firing during the E2 phase and end before the phrenic nerve burst.[19][26]
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In mammals, the Bötzinger complex (BötC) is a group of mainly expiratory neurons located within the ventral respiratory column in the rostral ventrolateral medulla (immediately caudal to the facial nucleus and ventral to the compact formation of the nucleus ambiguus).
BIMU-8 is a drug which acts as a 5-HT4 receptor selective agonist. BIMU-8 was one of the first compounds of this class. The main action of BIMU-8 is to increase the rate of respiration by activating an area of the brain stem known as the pre-Botzinger complex.
Complex commonly refers to: Complexity, the behaviour of a system whose components interact in multiple ways so possible interactions are difficult to describe Complex system, a system composed of many components which may interact with each other Complex (psychology), a core pattern of emotions etc. in the personal unconscious organized around a common theme such as power or status Complex may also refer to:
The preBötzinger complex, often abbreviated as preBötC, is a functionally and anatomically specialized site in the ventral-lateral region of the lower medulla oblongata (i.e., lower brainstem). The preBötC is part of the ventral respiratory group of respiratory related interneurons. Its foremost function is to generate the inspiratory breathing rhythm in mammals. In addition, the preBötC is widely and paucisynaptically connected to higher brain centers that regulate arousal and excitability more generally such that respiratory brain function is intimately connected with many other rhythmic and cognitive functions of the brain and central nervous system. Further, the preBötC receives mechanical sensory information from the airways that encode lung volume as well as pH, oxygen, and carbon dioxide content of circulating blood and the cerebrospinal fluid. The preBötC is approximately colocated with the hypoglossal (XII) cranial motor nucleus as well as the 'loop' portion of the inferior olive in the anterior-posterior axis. The caudal border of the preBötC is slightly caudal to the obex, where the brainstem merges with the cervical spinal cord.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Joe Louis.