Studied by 0 peopleBody systems & Levels of Organization 7th grade science
Mechanical Input
signals that enter the body through physical touch or vibration
Messages
are received, processed, and a response is sent out
Behavior
what a plant or animal does
Response
what your body does in reaction to a stimulus
Organ
structure that is made up of different kinds of tissue
Absorption
process by which nutrients move from the digestive system into the bloodstream, to be delivered to all cells by the circulatory system
Chemical Input
a chemical that enters the body
Nerve Cell
Also called a neuron. It is also cells that carry information through your nervous system
circulatory system
When oxygen moves into the bloodstream this system delivers it to all the cells and carries back carbon dioxide to be expelled
Respiratory system
moves oxygen into the body and carbon dioxide out of the body
Stimulus
a signal in the environment that makes you react
Respiratory and circulatory system
The oxygen brought in by these systems are used to release energy from sugar in your food
Circulatory system
brings materials such as oxygen to all cells and takes away waste from those cells such as carbon dioxide
Tissue
group of similar cells that perform the same function
Examples of tissue
nervous, epithelial, muscle, connective
Examples of organs
heart, brain, lungs, and skin
Organ Systems
a group of organs that work together, carrying out major functions
Examples of organ systems
Muscular System, Nervous Systems
Organism
any living thing
Examples of chemical input
smelling or tasting something
Examples of mechanical input
touching or hearing something
Electromagnetic input
signals that enter the body in the form of electromagnetic stimuli
Examples of electromagentic input
seeing something
Sensory Receptors
a nerve ending that sends signals to the central nervous system when it is stimulated
Brain
organ that serves as the primary control center of the nervous system
Least complex - most complex
Cells - tissue - organs - organ systems - organism
Levels of Organization
A group of specialized cells build tissue A group of tissue builds an organ A group of organs build an organ system A group of organ systems build an organism
Nervous system
tells your muscles when and how to act and controls movement
Skeletal system
when muscles are told to move they pull on the bones of this system to allow for movement
Central Nervous System
consists of your Brain and Spinal cord
Peripheral Nervous System
consists of nerves
Multicellular organism
all the organ systems work together
Excretory system
eliminates waste from the body
Digestive system
the circulatory system works with this system to get nutrients to all body cells
Note
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