Nervous system

A high speed computer is contain own hardware and software, just like that our human nervous system is also a high speed anatomical and psychological unit.

So our nervous system is control our thought and body movement in the form of electrical signal and chemical to communicate it own system and rest of our systems.

The human nervous system can be divided into two parts

1. The central nervous system
2. The peripheral nervous system

The central nervous system is also divided into two parts

• The brain
• spinal code

The peripheral nervous system is "consist of all the neural (nerve) tract that lie outside these central tissues and connect to the rest of the body."*

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers
3. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006
4. Kara Rogers "The brain and the nervous system" Britannica Educational Publishing, New York, USA.(* page 9)

The Corpus Callosum

We know that inner core of the cerebral cortex is consist of myelinated commissural nerve fibres. These fibres are connected the two hemisphere of cerebrum is called corpus callosum. These fibres are help to communicate and exchange of information of both hemisphere of the cerebrum in our brain.

Imagine in our house a two high speed computer are present. For network we use interface cable. This interface cable is called corpus callosum and two high speed are two hemispheres of the cerebrum.

The corpus callosum is consist of white matter and around 200 million of nerve fibres are connected between two hemispheres.

Roger Gorski a neurologist found that woman's brain has thicker corpus callosum as compared to the man's brain.. It is nearly 30% more thicker as compared to the man's corpus callosum.

Research say that due to the female hormone oestrogen women have Thicker corpus callosum as compared to the man. So women are more fluent in speech, ability to do multiple unrelated task, fast and accurate judgment about people and judgment etc.

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers
3. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006
4. Kara Rogers "The brain and the nervous system" Britannica Educational Publishing, New York, USA.

Cerebrum cortex of our brain

The outer layer of the cerebrum (means both left hemisphere and right hemisphere) of our brain is called cerebrum cortex. The colour of the cerebrum cortex is gray. It consist of neurons, blood vessels and glial cells.

We can divided the cerebrum  cortex into two parts 1) outer layer 2) inner layer. The outer layer of the cerebrum cortex is gray in colour and consist of gray matter. Inner layer of the cerebrum cortex is white and consist of white matter.

In the white matter of the cerebrum cortex is consist of a special types of nerve fiber called myelinated commissural nerve fibres.

What is nerve fibre?

"Nerve fibres or axons, are long, thin strands of tissue that project from a nerve cell and carry electrical impulses to and from the brain"*.

We can divided these myelinated commissural nerve fibres into two types

1. Corupus callosum which is connected our two hemispheres of the cerebrum.
2. Association fibres which is connected different region of each hemisphere of the cerebrum.

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers
3. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006
4. Kara Rogers "The brain and the nervous system" Britannica Educational Publishing, New York, USA.(* page 20)

 

Cerebrum of the brain

Cerebrum is the core, biggest and uppermost part of the brain. " If you could see the human brain beneath its bony cranial protection, you would see a convoluted, wrinkled, ropy looking, pinkish-gray mass that looks something like a large, mushy walnut. This is the cerebrum"*

"It is involved with sensory  integration, control of the voluntary movement and higher intellectual function such as speech and obstract thought."***

The cerebrum is divided into equal two part "by a deep, longitudinal groove"** or longitudinal sulcus. These two half of the cerebrum is called left hemisphere and right hemisphere.

Left hemisphere and right hemisphere of the cerebrum from outside view look like mirror images of each other but they working differently.

In our brain, the right hemisphere is control left side of the body and also for "creative, artistic, visual, intuition, ideas, imaginations, holistic, tune of a song, see 'big picture', spatial and multiprocessing."#

In our brain, the left hemisphere is control right side of the body and also for "mathematics, verbal, logical, facts, deduction, analysis, practical, order, word of a song, linear and see fine details."#

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers (* page no. 13, ** page no. 15)
3. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006 (# page no. 49) 
4. Kara Rogers "The brain and the nervous system" Britannica Educational Publishing, New York, USA. (*** page no.20)

Our Brain

Brain is the very important part of the central nervous system. In the simple way, we can say our brain is a super computer which consist of a processor, motherboard, hard disk etc. as a hardware and own software to operates the whole body.

In a computer, several peripheral are connected to the system unit. They are sending and receiving the signal from the system unit.

Similarly in our brain also receives signal from sensory neurons in the central and peripheral nerves system and by own software program it generates and sends new signal to instruct a particular function of our body part to react in a particular way.

The human brain are three time bigger then the size of the gorilla.And also one third time bigger than Neanderthal man.

The objects which is starting from the top of the spinal code is called brain. Our brain is cover by a strong and bony protective part is called cranium or cranial cavity. Cranium or cranial cavity is "surrounds the brain like a permanent, exclusively designed bike helmet"*  to protect our brain for accident.

We can divided our brain  into 3 different parts such as

1. Cerebellum
2. The brain stem
3. Cerebrum

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers (* page no. 11)
3. Kara Rogers "The brain and the nervous system" Britannica Educational Publishing, New York, USA.
4. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006

Human Body

The human body (means both male and female body) is consist of following  interrelated systems, such as

1. Circulatory system
2. Respiratory system
3. Skeletal system
4. Muscular system
5. Digestive system
6. Excretory system
7. Endocrine system
8. Reproductive system
9. Lymphatic system
10. Immune system
11. Nervous system

 Each system works specific function of a body. "From its earliest development in the fetus, a complex mass of tissue housed in your skull controls and coordinates these systems, which play out all of your mental and physical actions. This complex mass of tissue is your brain"*. In the above interrelated systems our "brain is a  major part of the nervous system and without it, none of other systems could work."*

Reference Books

1. Dr. Chintamani Kara "Higher Secondary Psychology Part-1" New Age Publication, Cuttack, 2007 (Oriya)
2. Ann Mcintosh Hoffelder and Robert L. Hoffelder "How the Brain Grows" series of brain works, series editors" Eric H. Chudler New York: Chelsea House Publishers (* page no. 7)

Why Women are thin skin and men are thick skin

Science says that skin of the women is thinner as compared to the skin of the men. "And has a extra fat layer below it for more warmth in winter and provide greater endurance."* This is the reason women have more wrinkles as compared to the men.

Question is raised why men skin is thick skinned and women skin is thin skin?

In the past, man has played the role as a hunter. So he "needed desensitised skin to run through prickly bushes, wrestle animals and fight enemies without pain showing them down."* This is the reason when modern "men is focused on a physical task or sporting activity, he unlikely even to be aware of injury"*

But in the past women played the role as a child-bearer. so she needed a thin skinned to create better relationship between her children.

Science says that "most of boys sensitivity to touch is lost by the time he reach puberty and his body prepares itself for the rigours of the hunt. A boy doesn't really lose skin sensitivity at puberty, it just goes to one area"* of his body that is his sexual organs

Reference Books:

1. John Gary "Men, Women and relationship" 2nd edition, Hillsboro OR: Beyond Words (1993)
2. Allan and Barbara Pease, "Why men don't listen and women can't read maps" Manjul Publishing House Pvt. Ltd., Bhopal, India 2006(* page no. 34)