Cell Anatomy & Physiology

Cells are the body’s smallest functional units. They are grouped together to form tissues, each of which has a specialised function, e.g. blood, muscle, bone. Different tissues are grouped together to form organs, eg. the heart, stomach and brain. Organs are grouped together to form systems, each of which performs a set of related functions that maintain homeostasis and contribute to the health of the individual. For example, the digestive system is responsible for taking in, digesting and absorbing food, which involves a number of organs, including the stomach and intestines. The structure and different functions of cells and types of tissue are explained in this article.

The final section considers features of benign and malignant tumours, their common causes, and how they grow and may spread. The human body develops from a single cell called the zygote, which results from the fusion of the ovum (female egg cell) and the spermatozoon (male sex cell).Read more…