Question

Nervous System, Circulatory System, Immune System.

How the three systems work together to maintain homeostasis

This will include the organs that work together

How the organs work together

The homeostatic system that is being maintained

Type of feedback system

Parts of the feedback system (be specific)

Answer 1

Homeostasis means internal stability and balance within a body. This is important and essential for a living body to be functioning properly.

The Nervous system consists of the brain, the spinal cord and a network of nerve fibers.

The circulatory system is made up of the heart and blood vessels while the immune system works with the help of different types of immune cells and the lymphatic system.

The circulatory system supplies oxygen rich blood to all the tissues of the body, including the bones. The bones make different types of blood cells as well as immune cells which they deliver into the blood.

The nervous and immune systems are two main regulators of homeostasis. Communications between these two systems help the other organs of the body to work in perfect harmony and ensures proper functioning of the body. The hypothalamus in the brain acts as a communication link between the nervous system and the endocrine system. The endocrine glands secrete specific hormones into the blood which act on specific cells or organs, called the 'target sites'. The level of hormones in the body is controlled by a 'negative-feedback' mechanism. This means that if the level of a particular hormone reaches the required limit, the endocrine gland stops secreting that hormone into the blood.

The nervous system interacts with every other organ and tissue in the body and elicits the required response from them in response to a stimulus.

The cardiovascular system controls the supply of blood to the tissues, redirecting blood supply to those tissues and cells which are more active and require more blood supply.

The nervous system controls immune functions by direct innervation of immune organs like thymus and lymphatic system or by stimulating the pituitary andother endocrine organs to secrete hormones in the blood.

The circulatory system carries the hormones as well as the immune cells