A simple action, such as tapping your finger on the table, involves the skeletal system, the muscular system and the nervous system. This voluntary action begins as a stimulus in the cerebrum of the brain.

INTRODUCTION: Weightlessness is not good for the skeleton. Astronauts must often live and work in zero gravity. Weightlessness is not a restful state and it can put great stress on body systems, particularly

Blood is the fluid that flows through blood vessels, and the sight of blood is a sure sign that a vessel has ruptured. The loss of large amounts of blood has serious consequences: death will result if

Heart rate is modified according to the needs of the body. The heart increases during physical exercise to supply extra oxygen to the tissues and to remove excess carbon dioxide. At rest, a normal adult

When the blood vessels supplying the heart muscle become narrowed by fatty deposits, the heart can become starved of oxygen. The patient will suffer pains on exercise – called angina – and is very susceptible

Hello, dear hivers. This post is sequel to my previous post, where I explained the structure and function of the mammalian kidney. In that post, I also explained the role of the kidney in homeostasis and

The functional unit of the kidney is the nephron (or kidney tubule). It is important to know the position of the nephrons in relation to the overall plan of the kidney. The outer cortex of the kidney contains

Hello, dear hivers. Kindly move along with me while I discuss the importance of kidney in excretion and maintaining water and salt balance. But, firstly I would like to explain some of the inconveniences

Dear readers. Thank you for the comments and support. This will be the concluding part to my last post on How is temperature regulated in mammals? So, I will start today’s post with the problems associated

The emperor penguin (Aptenodytes forster) is over a metre tall and weighs about 35 kg, roughly half the weight of an average adult man. It lives in the Antarctic, one of the coldest places on Earth.

Dear readers, this is a concluding post to my previous post on ENZYMES AND METABOLISM. I will start my discussion today on types of enzymes. Although there are many different enzymes, each of them can

Hello, dear readers. Did you know it is easy to see how confectioners make chocolates with hard centres: they simply pour molten chocolate over the centre and wait for it to set. But what about the soft

Hello, dear readers. Thank you all for the consistent support. Today, I will like to conclude my series on NERVOUS SYSTEM by starting with the discussion of the Parkinson’s Disease in relationship to a

The human brain weighs about 1.5 kilograms, is 85 per cent water and has the consistency of thick blancmange. It is, however, the most complex material known. It copes with a huge amount of information

The human brain is an organ of great mystery. In addition to being unbelievably complex, it is very difficult to investigate experimentally. We now know that different areas of the brain have particular

Greetings to the community and to all my readers. Thank you for the constant support and feedback. Still on Neurotoxin, Nerves, Neurons and Impulses; but today’s post will be a discussion on a special

Hello, dear reader. This post is a sequel to my previous post on Neurotoxin, Nerves, Neurons and Impulses #2 where I discussed the action potential, depolarisation, repolarisation, and the disease of the

Hello, dear reader. Still on Neurotoxin, Nerves, Neurons and Impulses where I last discussed about the Neurotoxins on the arrow tip, how information travels around the body, nerves; and how they carry

Hello, my dear readers. Thank you all for the motivation and encouragement. On my blog today, I will be discussing the roles of neurotoxins, neurons, nerves and impulses. I will introduce the topic by

Hello, dear readers. Greetings to you all. This will be the final post of my series on HEALTH AND DISEASES. In this post, I will explain how cancer can be prevented and treated. I will also discuss the