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.

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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-...

Structure and function of Neuron

Neurons (nerve cells) are the functional units of the nervous system. A typical neuron is divided into three parts i.e Cell body or Soma,Some contains all the cell organelles like Nucleus, Mitochondria etc. Dendrites and Axon. Schwann cells of Axon are covered by Myelin Sheath. Dendrites are branched like structures on Soma. Axon terminal is also branched like structure. The signals are received from neuron by dendrites and are send to next neuron bye chemo-electrical impulses through axon. The junction between the two cells is known as Synapses.In neuron signal travels in the form of chemicals but at synapses in changes in to electrical impulses.

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