Sir Isaac Netwotn’s three laws of motion. Three states of matter (solid, liquid, gas). We live on the third rock from the sun. Our metric system of measurement uses metre, litre, and gram. Morse code is a reliable system as the signal is made up of only three parts – a long ‘on’, the dash; a short ‘on’, the dot; and an ‘off’ signal. Do you know what SOS means in Morse code?
Also known as the primal brain, this is the oldest part of the brain and is responsible for basic life functions like breathing and alerting us to danger. It’s also responsible for the fight or flight response.
Limbic system
Also known as the paleomammalian brain, this part of the brain is responsible for emotions and is involved in learning and memory. It’s based on instinct and past experiences.
Neocortex
Also known as the neomammalian brain, this part of the brain is responsible for higher cognitive functions like reasoning and logical thought. It’s the outermost part of the brain.
Video by Robert Sapolsky
These three parts of the brain are often described as working together to keep us alive. However, the triune brain hypothesis, which describes the brain as having these three components, has been criticized and is no longer widely accepted by comparative neuroscientists.
The Orch OR suggests that consciousness is a quantum process facilitated by microtubules in the brain’s nerve cells.
Microtubules are protein-based structures forming part of the cell’s cytoskeleton.
According to this theory, consciousness is akin to a quantum wave that passes through these microtubules.
Like any quantum wave, it exhibits properties such as superposition (existing in multiple states simultaneously) and entanglement (connection between particles even when far apart).
Universal Connection:
Penrose and Hameroff propose that our consciousness can connect or entangle with quantum particles outside our brain, theoretically spanning the entire universe.
However, other scientists have raised objections. Efforts to recreate quantum coherence (keeping particles in a wave state) only succeed in very cold, controlled environments.
The brain, being warm, wet, and dynamic, doesn’t fit these conditions, leading to skepticism about consciousness remaining in superposition.
Criticism and Challenges:
Orch OR has faced criticism from mathematicians, philosophers, and scientists.
Key points of contention include Penrose’s interpretation of Gödel’s theorem, the link between non-computability and quantum events, and the brain’s unsuitability for hosting the required quantum phenomena due to its warm and noisy nature.
In summary, Orch OR offers an intriguing perspective on consciousness, suggesting that it emerges from quantum processes within our neurons and may connect with the universe at large¹²³⁴. However, it remains a topic of ongoing debate and exploration in the scientific community. 🌟
Source: Conversation with Bing, 4/23/2024 (1) Orchestrated objective reduction – Wikipedia. https://en.wikipedia.org/wiki/Orchestrated_objective_reduction. (2) How quantum brain biology can rescue conscious free will. https://www.frontiersin.org/articles/10.3389/fnint.2012.00093/full. (3) 14 Orch OR and the Quantum Biology of Consciousness – Oxford Academic. https://academic.oup.com/book/44484/chapter/376471400. (4) 14 CONSCIOUSNESS IN THE UNIVERSE AN UPDATED REVIEW OF THE “ORCH OR” THEORY. https://anesth.medicine.arizona.edu/sites/default/files/hameroff-penrose_updated_review_of_orch_or_2016_b2237_ch-14_revised-2-3.pdf. (5) en.wikipedia.org. https://en.wikipedia.org/wiki/Orchestrated_objective_reduction.
There is only one place in the human body with three duplicate heart valves, called the tricuspid valve. The valves of the heart are structures which ensure blood flows in only one direction. They are composed of connective tissue and endocardium (the inner layer of the heart).
There are four valves of the heart, which are divided into two categories:
Atrioventricular valves: The tricuspid valve and mitral (bicuspid) valve. They are located between the atria and corresponding ventricle.
Semilunar valves: The pulmonary valve and aortic valve. They are located between the ventricles and their corresponding artery and regulate the flow of blood leaving the heart.
What does the tricuspid valve do?
The heart pumps blood in a specific route through four chambers (two atria and two ventricles). Every time your heart beats, the atria receive oxygen-poor blood from the body. And the ventricles contract (squeeze) to pump blood out.
As the heart pumps, valves open and close to allow blood to move from one area of the heart to another. The valves help ensure that blood flows at the right time and in the correct direction.
The tricuspid valve ensures that blood flows from the right atrium to the right ventricle. It also prevents blood from flowing backward between those two chambers. When the right atrium fills, the tricuspid valve opens, letting blood into the right ventricle. Then the right ventricle contracts to send blood to the lungs. The tricuspid valve closes tightly so that blood does not go backward into the right atrium.
By DrJanaOfficial – Official Website, Support, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=50477765
What is the tricuspid valve made of?
The tricuspid valve is made of three thin but strong flaps of tissue. They’re called leaflets or cusps. The leaflets are named by their positions: anterior, posterior and septal. They attach to the papillary muscles of the ventricle with thin, strong cords called chordae tendineae.
With every heartbeat, those leaflets open and close. The sounds of the heart valves opening and closing are the sounds you hear in a heartbeat.
Does the heartbeat in 3/4 time?
Yes, the heart is closer to 3/4 time than 4/4 time. The waltz is in perfect synch with the heartbeat. Any music slower than the heartbeat tends to relax us, and any music faster than the heartbeat excites.
There was a lively discussion about how body parts evolved on January 12, 2024 Episode: Our Little Stupid Bodies, question 4. Hear the recording and read the transcript below (permission to post from RadioLab).
