Human Control Systems LG.1 Flashcards
Features on sense organs that detect stimuli (ex. light, sounds, or smells) outside the body
Receptors
What is the largest sense organ of our body?
Skin
This type of receptors lets you know if there is damage to the skin
Pain receptors
What part of the eye controls the light entering the pupil by increasing/decreasing its size?
The iris
The lenses of the eye can change shape to allow you to see near or far objects. What is this called?
Accomodation
The body has 2 control systems for coordinating suitable responses to various stimuli. What are these 2 control systems?
The nervous system and the endocrine system
This body system is controlled by the brain
The nervous system
Are chemical substances produced by endocrine glands and carried in blood
Hormones
In this control system, signals are electrical impulses
The nervous system
In this control system, signals are carried as chemical substances
The endocrine system
What does CNS mean?
The Central Nervous System
The brain and spinal cord which function as the coordinating center for impulses is what?
CNS
What are the 3 examples of neurons?
Sensory, relay, and motor
Specialized cells that contain a nucleus
Neurons
Long thin extensions of cytoplasm from the cell body
Axons
