Skip to main content

Structure and function of human brain

Structure of Human Brain

Human brain is well protected in a cranium cavity, in a skull. The Human brain has 3 membranes called Meninges. The space between the 3 membranes is filled with the fluid called Cerebro-spinal fluid which protects the brain from mechanical shocks.

Brain is divided into three regions
1. Fore Brain:- It is further divided into 3 parts
Cerebrum:- It is the main thinking part of the brain. It is the center of intelligence, Memory, consciousness, willing power and voluntary actions.
Thalamus:- It relays pain and pressure impulses to the cerebrum.
• Hypothalamus:- It controls body temperature and secretion of Pituitary gland.

2. Mid Brain:- It doesn't have any further divisions. It controls reflex movements.

3. Hind Brain:- It has 3 regions

• Cerebellum:-It balances body.

• Pons Verolii:-It connects cerebrum with cerebrum, and transfer messages in between them.

• Medulla:-It controls involuntary activities of body e.g breathing, heart beating etc. Any injury in this part can lead to the death.

Comments

Popular posts from this blog

Absorption of Nutrients in Small Intestines

The digested food is now in simple form and is ready to use by cells. The inner wall of small intestines is called as Mucosa, it has numerous finger like projections called as Villi (singular- villus), which in-turn has finger like projections called as micro-villi. The purpose of villus is to provide large surface area for nutrient absorption. Villi have large network of blood capillaries, where the nutrients are absorbed in blood by diffusion.Most of the nutrients are absorbed in jejunum. except Iron is absorbed in duodenum  vitamin B12 and bile salts are absorbed in the terminal ileum. Through blood digested food reaches to each and every cell of the body.
  MODES OF REPRODUCTION USED BY SINGLE ORGANISMS                                                            Part 1 The modes by which various organisms reproduce depend on the body design of the organisms. Unicellular organisms reproduce by means of following processes:- Fission:-   Fission is the process of spliting of unicelluar organisms or single celled organisms into the two are more than two cells, each cell forms the new individual. The new individual formed is exact copy of parent cell. Fission is of two types:-            A) Binary Fission:-  when the single parent cell divides into two new daughter cells, each new                                                ...

Male reproductive system

Reproduction In Human Beings Reproduction:- It is the biological process in which organisms give offspring for the continuity of race. A complete system is concerned to perform this function called reproductive system. Here we are going to discuss sexual reproduction in Human Beings. As we human beings are diocious i.e male and female sexes are separate Male reproductive system in Human Beings. Testis:- These are the primary sex organs of males, testis produce male sex cells (sperms) as well as male sex hormone testosterone. Testis lie out side the body between the lungs in a muscular pouch called Scrotum.Scrotum maintains the temperature of testis which is below 3℃ than body temperature. Testis are two in number. Alongside the testicles are the  epididymis   and the  vas deferens.  which make up the duct system of the male reproductive organs. The vas deferens is a muscular tube that passes upward alongside the testicles and transports the sperm-...