P2: Describe the structure of the tissues of the body and their role in the functioning of two named body systems.

Authors Avatar

P3: Use diagrams with annotated (descriptive) notes to show the main organs and structures in the body systems named below

The cardiovascular system:


The cardiovascular is an organ system that carries food, nutrients, hormones metabolic wastes and gases such as oxygen and carbon dioxide to and from the cells. It also helps stabilise body temperature and PH to sustain homeostasis. The cardiovascular system involves the heart and a closed system of vessels which are called the arteries, veins and capillaries. The blood in the cardiovascular system is pumped by the heart around a closed circuit of vessels. It then does this over again through a number of body circulations. The fundamental role of the cardiovascular system in sustaining homeostasis depends on the continuous controlled movement of the body through the capillaries that permeate each and every tissue and reach every cell in the body. The blood carries out its function of transportation in the microscopic capillaries. Materials which are essential i.e. nutrients travel from capillary blood into fluids that surround the cells as this is occurring waste products are removed.

The respiratory system:


The respiratory system supply’s the blood with oxygen in order for the blood to deliver oxygen to all parts of the body which is done through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is the respiratory system's means of getting oxygen to the blood. Respiration is achieved through the mouth, nose, trachea, lungs, and diaphragm. Oxygen enters the respiratory system through the mouth and the nose. The oxygen then passes through the larynx and the trachea which is a tube that enters the chest cavity. In the chest cavity, the trachea splits into two smaller tubes called the bronchi. Each bronchus then divides again forming the bronchial tubes. The bronchial tubes lead directly into the lungs where they divide into many smaller tubes which connect to tiny sacs called alveoli. The inhaled oxygen passes into the alveoli and then diffuses through the capillaries into the arterial blood. Meanwhile, the waste-rich blood from the veins releases its carbon dioxide into the alveoli. The carbon dioxide follows the same path out of the lungs when you exhale.

Join now!

The digestive system:



The digestive system is a number of organs connected to a twisting tube from the mouth to the anus. A lining called mucosa if found in this tube which contains tiny glands that produce juices that help digestion in the mouth, stomach and small intestine. Organ systems such as the liver and ...

This is a preview of the whole essay