Homeostasis and an Introduction to Body Systems

Topic 2 Lesson 3 NurseHub

Homeostasis

The ability of a system to maintain a steady state

Positive Feedback

System in which the stimulus and response are the same

Negative Feedback

System in which the stimulus and response are opposite

Integumentary System

Its function is the protection of the body, secretion of waste products, production of vitamin D, and regulation of body temperature. This system also supports sensory receptors that send information to the nervous system.

Skeletal System

Provides protection and support and produces red blood cells. It also stores chemical salts.

Muscular System

This system moves, helps to maintain posture, and produces heat.

Nervous System

This system receives sensory information detects changes and in response, stimulates muscles and glands.

Endocrine System

This system contains many feedback systems to help maintain homeostasis.

Lymphatic System

The function of this system is to return blood to tissues as well as transport some absorbed food molecules and defend against infection.

Immune System

This system consists of cells and antibodies that help the body fight pathogens.

Blood (Fluid) System

These structures work to transport oxygen and carbon dioxide along with water, electrolytes, hormones, carbohydrates, fats and proteins, and wastes.

Cardiovascular System

The function of this system is to transport blood.

Digestive System

The function of this system is to receive, break down, and absorb food. It also eliminates wastes.

Respiratory System

This system supplies the body with oxygen and eliminates carbon dioxide.

Urinary System

The function of this system is to remove wastes, maintain water and electrolyte balance, and store and transport urine.

Reproductive System

This system passes genetic information down to future generations as well as produces hormones that help the body to mature.