These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are mostly the same, both structurally and chemically; and finally, that energy flow occurs within …

The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.

Interesting Theodor Schwann Facts: Theodor Schwann was born in Neuss, Germany. He studied at the Jesuits College in Cologne. He transferred to Berlin where he worked under Johannes Peter Muller. During his observation of muscle cells Schwann noticed that the upper esophagus contained striated muscle.

Theodor Schwann, (born December 7, 1810, Neuss, Prussia [Germany]—died January 11, 1882, Cologne, Germany), German physiologist who founded modern histology by defining the cell as the basic unit of animal structure.

Schleiden described plant cells and proposed a cell theory which he was certain was the key to plant anatomy and growth. Pursuing this line of research on animal tissues, Schwann not only verified the existence of cells, but he traced the development of many adult tissues from early embryo stages.

Rudolf Virchow

Contemporary light microscopes are able to magnify objects up to about a thousand times. Since most cells are between 1 and 100 μm in diameter, they can be observed by light microscopy, as can some of the larger subcellular organelles, such as nuclei, chloroplasts, and mitochondria.

Microscopes. A microscope is an instrument that can be used to observe small objects, even cells.

microscopes

Each cell is capable of converting fuel to useable energy. Therefore, cells not only make up living things; they are living things. Cells are found in all plants, animals, and bacteria.

Humans and animals perceive pain through sensory nerve cells. These are the same type of cells that transmit information from our senses, allowing us to smell, see, hear, taste, and touch.

NO. Therefore they can not have emotion. They can’t think from your perspective.

It is largely mature by the end of the second trimester, which is when babies first become able to survive outside the womb. Last of all to mature is the cerebral cortex, which is responsible for most of what we think of as mental life–conscious experience, voluntary actions, thinking, remembering, and feeling.

A cell’s nucleus can’t think for itself – it just follows the instructions in the DNA. It can get signals from your body or the outside environment that tell it to follow those instructions in a slightly different way. But a cell cannot plan for the future or make decisions the same way you can with your brain.

The brain constitutes only about 2 percent of the human body, yet it is responsible for all of the body’s functions. Learn about the parts of the human brain, as well as its unique defenses, like the blood brain barrier.

We are aware of a tiny fraction of the thinking that goes on in our minds, and we can control only a tiny part of our conscious thoughts. The vast majority of our thinking efforts goes on subconsciously. Only one or two of these thoughts are likely to breach into consciousness at a time.

Thoughts are mental cognitions—our ideas, opinions, and beliefs about ourselves and the world around us. While thoughts are shaped by life experiences, genetics, and education, they are generally under conscious control. In other words, if you are aware of your thoughts and attitudes, you can choose to change them.

“Our minds aren’t passive observers, simply perceiving reality as it is. Our minds actually change reality,” said Alia Crum, an assistant professor of psychology and director of the Stanford Mind and Body Lab.

It is estimated that the human brain has close to 100 billion neurons. Neurons release brain chemicals, known as neurotransmitters, which generate these electrical signals in neighboring neurons. The electrical signals propagate like a wave to thousands of neurons, which leads to thought formation.

Just because your mind says something is important does not mean it actually is important. Just because something feels important also does not mean it is important. Thoughts are just thoughts. Thoughts are not facts.

Follow the 3-3-3 rule. Then, name three sounds you hear. Finally, move three parts of your body — your ankle, fingers, or arm. Whenever you feel your brain going 100 miles per hour, this mental trick can help center your mind, bringing you back to the present moment, Chansky says.

How can you stop thoughts?

1. List your most stressful thoughts.
2. Imagine the thought.
3. Stop the thought.
4. Practice steps 1 through 3 until the thought goes away on command.
5. After your normal voice is able to stop the thought, try whispering “Stop.” Over time, you can just imagine hearing “Stop” inside your mind.

It’s not uncommon for people to have a thought about harming someone, even if they don’t actually want to. What makes harm OCD a problem is when you take these thoughts (or impulses or images) to be a dangerous sign. In other words, you interpret the thought to mean that you’re likely to act on it.

An intrusive thought is an unwelcome, involuntary thought, image, or unpleasant idea that may become an obsession, is upsetting or distressing, and can feel difficult to manage or eliminate.

These often occur in people who have obsessive-compulsive disorder. Some common examples: fear of purposefully hurting loved ones (assaulting or killing them) or yourself. fear of accidentally harming loved ones (burning down the house, poisoning someone, exposing them to illness) or yourself.

Think of OCD as a separate entity; you are not your thoughts. People with OCD have the same thoughts as people with “normal” brains, but our brains get stuck in an uncontrollable loop we can’t stop. It is uncontrollable because no amount of reassurance from someone else or self-rationalizing will help.