1. Receptions
1.1. Kissing is a sign of affection, humans as well as animals do this, it is all different. The behavior is triggered with the human couple, parents to their children, as well as many mammals that have different ways of kissing.
1.1.1. These ways are the way of wanting to show a way of affection or showing dominance
1.1.1.1. http://www.hungryforchange.tv/article/8-health-benefits-of-kissing
1.2. The stimuli is received from eyes, ears, skin, and brain.
1.2.1. These come from something that is called mechanoreceptors, these are a sense organ or cell that responds to mechanical stimuli such as touch or sound.
1.2.1.1. http://www.madscientistblog.ca/mad-scientist-5-paracelsus-pt-2-paracelsus-homunculus/#sthash.G0LAb9Pj.dpbs
1.3. The body relays the stimuli by the emotional stimuli → Thalamus →Amygdala → emotional responses.
1.3.1. The information gets to the brain by your body telling your brain to cue up dopamine, a neurotransmitter associated with pleasure. At the same time, other parts of your brain are shutting down negative emotions.
1.3.1.1. Also, your lip locking may also have prompted your pituitary gland to release oxytocin, the "bonding hormone."
1.3.1.1.1. https://www.google.com/search?q=pituitary+gland&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj9h_GDu_fLAhVFdR4KHUn_DyYQ_AUIBygB&biw=1216&bih=705#imgrc=lno_7co6vkvc5M%3A
2. Resources
2.1. Links
2.1.1. http://blogs.discovermagazine.com/gnxp/2011/01/kissing-the-science-of-humanity/
2.1.2. http://www.eharmony.com/dating-advice/dating/the-science-behind-a-first-kiss/#.Vt7JnlsrLnA
2.1.3. https://www.britishcouncil.org/voices-magazine/kiss-science-smooching
2.1.4. http://www.oecd.org/edu/ceri/aprimeronemotionsandlearning.htm http://www.womenshealthmag.com/sex-and-love/body-on-kissing
2.1.5. http://www.eharmony.com/dating-advice/dating/the-science-behind-a-first-kiss/#.Vt7JnlsrLnA
2.1.6. http://www.womenshealthmag.com/sex-and-love/body-on-kissing
2.2. Files
2.3. Videos
2.3.1. https://www.youtube.com/watch?v=dwJ-wwF9XVs&feature=youtu.be
3. Video:
4. Effects
4.1. head tilts
4.1.1. nerve endings of lips send neurotransmitters to brain and rest of body
4.1.1.1. endorphins
4.1.1.2. phenylethylamine
4.1.1.3. dopamine
4.2. kissing engages 24 facial muscles
4.3. blood flow
4.4. adrenal glands unleash adrenaline
4.4.1. includes
4.4.1.1. heavy breathing
4.4.1.2. pounding heart
4.4.1.3. sweaty palms
4.5. mood
5. Modulation
5.1. signal goes to
5.1.1. the somatosensory cortex
5.2. signal is received by
5.3. the proteins used are
5.3.1. dopamine, Oxycontin, and serotonin
5.4. the gene use is called
5.4.1. the MHC gene
5.5. the gene is expressed in
5.5.1. the immune system
5.6. the modulated signal is sent to
5.6.1. the face, mostly the lips and eyes