
Explore the fundamentals of digestion and excretion, offering an introductory overview of how the human body processes nutrients and eliminates wastes.
Explore macronutrients like carbohydrates, proteins, and fats and how they supply energy. Learn about micronutrients—vitamins and minerals—and their roles, sources, and common deficiencies.
Explore how minerals like iron support hemoglobin and oxygen transport, calcium and phosphorus build bones, sodium regulates blood pressure and nerve impulses, and water underpins digestion and temperature control.
Examine the structure and function of the human dentition, including incisors, canines, premolars, and molars, and how enamel, dentine, and pulp relate to decay and care through brushing and fluoride.
Enzymes, made of proteins, act as biological catalysts that speed up specific reactions at an active site with a lock-and-key substrate fit, while temperature and pH govern their activity.
This lesson is also suitable for students studying Agricultural Science. I included this here so that you may be able to compare digestion in Humans and ruminants. Ruminants are animals that have four compartment stomach.
Defines excretion as removing metabolic wastes and outlines how kidneys and nephrons filter blood, reabsorb essentials, and produce urine via proximal tubule, loop of Henle, distal tubule, and collecting duct.
Explore excretion through sample questions and connect digestion to waste elimination in the human body.
Explore the respiratory system’s structure and adaptations, from nose to alveoli, including inhalation and exhalation, epiglottis function, gaseous exchange, diffusion on a vast lung surface, and mucus and cilia defenses.
Are you a high school student? Or are you simply looking to expand your knowledge in biology? Then this is a course that you should enroll in.
Together we will examine the very basics of human digestion and excretion. We will discuss the changes that occur in food from the time we consume it until it is fully digested. But what happens when our food is fully digested? What happens to the metabolic wastes? Well, we shall examine how our excretory system helps us to get rid of metabolic wastes, in order to protect our cells from damage. In this short course you will also learn about the importance of a balanced diet, nutrient deficiency, and how our body control the amount of water in the blood vessels. In addition to Human digestion, a few additional lectures will discuss digestion in other animals -ruminants and non-ruminants.
This is therefore an ideal course for students who are preparing to write "O" level examinations. All the basic information will be provided on the topics that we will be exploring. However, this course is not restricted to students only, but to anyone who wish to have a basic understanding of these two fundamental processes that are taking place in our body, every single moment of our lives.
At the end of the course, I have also included a bonus section, with contents from one of my other course.