The Organization of the Human System

Homeostasis Homeostasis is the regulation of an organisms internal, life-maintaining conditions despite changes in the environment.

Systems Systems are groups of interacting components that perform a certain function. Examples: Organ System, Solar System, and working technological parts.

Matter Matter is anything that takes up space and has mass. Examples: Solids, Liquids, and Gasses. And pretty much anything!!!

Atoms Atoms are the smallest basic particles of matter. Examples are hydrogen atoms, oxygen atoms, and nitrogen atoms.

Molecules Molecules consist of two or more atoms put together. Examples: Water (H20), Carbon Dioxide (CO2), and Methane (CH4).

Cells Cells are the smallest basic unit of life. Cells are the building blocks of life. Examples: Eukaryotic Cells and Prokaryotic Cells

Tissues Tissue is a group of cells working together to perform a specific function. Examples: Muscle Tissue, Nervous Tissue (brain, spinal cord)

Organs Organ is two or more tissues working together to perform a specific function in the body. Examples: Heart, Lungs, Brain, Kidneys, Eye, Stomach, Skin, and Bones.

Organ Systems System: A group of interacting components that perform a certain function. Example to the left is the Skeletal System Other Examples: Circulatory System, Digestive System, Immune System, Nervous System, and Respiratory System.

Organisms Organism is an individual living system or creature. An organism maybe unicellular or multi-cellular Examples: Crocodiles, Frogs, Plants, Bacteria, Humans, Lizards

Which is the correct order from smallest to largest? A. Tissue, Cell, Organ, Organ System, Organism B. Cell, Tissue, Organ System, Organ, Organism C. Cell, Tissue, Organ, Organ System, Organism D. Cell, Organ, Tissue, Organ System, Organism

Types of Tissues Epithelial Tissue: Covers and protects the underlying tissue. Example of this is Skin

Types of Tissues Nervous Tissue sends electrical signals throughout the body. Examples of nervous tissue are your brain tissue and spinal cord tissue.

Types of Tissues Muscle Tissue is made of cells that contract and relax to produce movement. Your Arms, Heart, and Stomach have muscle tissue

Types of Tissues Connective Tissue helps join, supports, protect, insulate, nourish and cushion organs.

Types of Tissues

Organs Organ is two or more tissues working together to perform a specific function in the body. Examples: Heart, Lungs, Brain, Kidneys, Eye, Stomach, Skin, and Bones.

Organ Systems System: A group of interacting components that perform a certain function. Example to the left is the Skeletal System Other Examples: Circulatory System, Digestive System, Immune System, Nervous System, and Respiratory System.

Organ Systems Integumentary System protects tissues and cells beneath So what types of tissues does the integumentary system primarily composed of?

Organ Systems Muscular System helps you move Made up primarily of muscle tissues. Muscles are found nearly every where throughout your body. Any place you can move or that naturally moves inside your body has muscle

Organ Systems Skeletal System helps support and protect body parts Have you ever broken part of your skeletal system? How did it feel? Does it take the same amount of time to heal as another injury

Organ Systems Cardiovascular System helps circulate blood throughout the body. Includes the heart, veins, and arteries.

Organ Systems Respiratory Systems helps absorb oxygen and release carbon dioxide. Perform the process of respiration!

Organ Systems Urinary System (Excretion System) filters or removes waste from your body.

Organ Systems Male Reproductive System produces sperm needed for reproduction.

Organ Systems Female Reproductive System produces eggs needed for reproduction.

Organ Systems Nervous System sends and receives electrical signals throughout the body.

Organ Systems Digestive System breaks down food into nutrients that the body can absorb. The cells absorb this nutrients by diffusion.

Organ Systems Lymphatic System helps return leaked fluids to blood and gets rid of bacteria and viruses.

Organ Systems Endocrine System has glands that help send out chemical messages. Let’s you know when your hungry, tired, etc.

Organisms Organism is an individual living system or creature. An organism maybe unicellular or multi-cellular Examples: Crocodiles, Frogs, Plants, Bacteria, Humans, Lizards

What’s a System? A set of inter-related components working together to perform a specific function is a system. A function is a job of a person or an object.

Question #11 Which of the following statements describes how tissues, organs, and organ systems are related? A. Organs form tissues, which form organ systems. B. Organ Systems form organs, which form tissues. C. Tissues form organs, which form organ systems. D. None of the Above

Question #12 The human skeleton has 206 bones. The human skull has 22 bones. What percentage of human bones are skull bones? Skull Bones/Skeleton Bones=? Then take that answer and multiply it by 100 22/206 X 100/1 = 10.68%

Question #13 How is the human body and a car alike? Both the human body and a car contain several different systems. A car has an exhaust system to take in air and remove waste products. The human body has a respiratory system to take in air and a digestive system to get rid of waste products.