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  2. Mammillary body - Wikipedia

    en.wikipedia.org/wiki/Mammillary_body

    They are connected to other parts of the brain (as shown in the schematic, below left), and act as a relay for impulses coming from the amygdalae and hippocampi, via the mamillothalamic tract to the thalamus. The lateral mammillary nucleus has bidirectional connections with the dorsal tegmental nucleus. The medial mammillary nucleus connects ...

  3. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    Animation of a two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.

  4. Two-stroke power valve system - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_power_valve_system

    A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...

  5. Two- and four-stroke engines - Wikipedia

    en.wikipedia.org/wiki/Two-_and_four-stroke_engines

    The M4+2 engine, also known as the double-piston internal combustion engine, is a type of internal combustion engine invented by Polish patent holder Piotr Mężyk. [1] The M4+2 engine took its name from a combination of two-stroke engines and four-stroke engines. The two-stroke combustion engine is characterized by a simple construction and ...

  6. Corpus allatum - Wikipedia

    en.wikipedia.org/wiki/Corpus_allatum

    In insect physiology and anatomy, the corpus allatum (plural: corpora allata) is an endocrine gland that generates juvenile hormone; as such, it plays a crucial role in metamorphosis. Surgical removal of the corpora allata (an allatectomy ) can cause an immature larva to pupate at its next molt , resulting in a miniature adult. [ 1 ]

  7. Human penis - Wikipedia

    en.wikipedia.org/wiki/Human_penis

    The corpora cavernosa are innervated by lesser and greater cavernous nerves and form most of the penis containing blood vessels that fill with blood to help make an erection. [8] The crura are the proximal parts of the corpora cavernosa. The corpus spongiosum is an erectile tissue surrounding the urethra.

  8. Fornix (neuroanatomy) - Wikipedia

    en.wikipedia.org/wiki/Fornix_(neuroanatomy)

    The terminal lamina creates the commissure plate. This structure gives existence to the corpus callosum, the septum pellucidum, and the fornix. The fornix splits into two columns at the front (anterior pillars), and then splits into two posterior crura. These two crura are joined together through the hippocampal commissure.

  9. Flat-twin engine - Wikipedia

    en.wikipedia.org/wiki/Flat-twin_engine

    The European models at this time included the Bradbury 3.5 hp (2.6 kW), the Brough HB, the Douglas 2.75 hp (2.05 kW) and 4 hp (3.0 kW) models, the Humber 3.5 hp and 6 hp (4.5 kW) models, the Matchless 6 hp, the Montgomery 6 hp, Williamson Flat Twin 8 hp (6.0 kW), and the Bayerische Flugzeugwerke Helios (the predecessor to BMW's first motorcycle).