Components and Functions
One of the two parts of the CNS, it's the organ inside the head that controls all body functions of a human being.
What is the Brain?
Name the five senses.
What are sight, touch, hearing, taste, and smell?
Something that your body senses through specific neurons.
What is a stimuli?
True/False: You have several hundreds of billions of neurons throughout the body and brain.
What is true?
One of the two parts of the CNS, it's the connection between the brain and the rest of the body.
What is the Spinal Chord
Tell how the five senses support human life.
What is that they make humans aware of their surroundings and are important to survival?
Are activated by stimuli and send messages to the brain.
What is a sensory neuron?
What is false?
Name the function of the CNS that relates to bodily reactions to stimuli.
What is creating responses?
Give a specific example of how a human uses each of their five senses for survival.
Answers will vary- What is...
1. They use sight to see what is in front of them
2. They use hearing to alert them of the things around them
3. They use taste to eat their food and know if it bad for them
4. They can use smell to sense hazards like smoke/gas
5. They can use touch to make sure something is safe to hold?
What is a response?
Found on the end of neurons and are what alerts the sensory neurons to stimuli.
What are receptors?
Name two of the four main functions of the CNS that are related to how it interacts with information.
What are receiving sensory information and processing information?
Tell why animals' senses have varying degrees of sensitivity depending on the species.
What is that each animal has different needs for survival?
Creates a response to a stimuli, sends a message from the brain to the rest of the body.
What is a motor neuron?
True/False: The brain sends messages to the body at the same speed no matter what part of the body it is messaging.
What is false?
Name one of the functions of the CNS that relates to the human body as a whole.
What is maintaining homeostasis?
Answers will vary: What is...
An owl has a more developed sense of sight than a dog because it is nocturnal, but a dog has a more developed sense of smell because dogs in the wild use their smell hunt?
Describe the process by which messages are sent to and from the brain using the four key components.
Answers will vary - What is...
A stimuli acts on the body and is picked up by the sensory neurons, which send a message to the brain. The brain decides how it wants to react and sends a message to the body with motor neurons, which creates the body's response?
Explain homeostasis.
What is the systems of the body working together in order to sustain and maintain human life?