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science
| Question | Answer |
|---|---|
| What are the 3 jobs of the nervous system? | 1. Receive information about what is happening both inside and outside of your body 2. Direct the way in which your body responds to this information 3. Maintain homeostasis |
| A change in the environment that causes an organism to react is called a | Stimulus |
| Give an example of each of the following types of stimuli: electromagnetic, mechanical, chemical | electromagnetic - wavelengths of light mechanical - sound waves, pressure, heat, cold, movement, pain chemical - taste & scent molecules |
| Your body’s reaction to a stimulus is called a | responce |
| Electrochemical signals are called | impulses |
| neuron | Nerve cells that carry information through your nervous system |
| nerve impulse | The message that a neuron carries |
| What part of a neuron carries nerve impulses toward the cell body | dendrites |
| correct route for an impulse in a reflex arc | R SIM E- Receptor - Sensory - Inter- Motor - Effector |
| What part of a neuron carries nerve impulses away from the cell body? | axon |
| Which type of neuron picks up stimuli from the environment? | Sensory neuron |
| Which type of neuron carries nerve impulses from one neuron to another? | Interneuron |
| Which type of neuron sends a nerve impulse to a muscle, causing the muscle to contract in response? | motor neuron |
| What is a synapse? | A gap between neurons in which a nerve impulse must travel over to get to the next neuron |
| What does the central nervous system consist of? | brain n spinal cord |
| What does the peripheral nervous system consist of? | Nerves (Somatic (voluntary) and autonomic (involuntary) NS) |
| The gap between the axon terminal or one neuron and the next structure | Synapse |
| An organism’s ability to maintain homeostasis | Regulation |
| What is the thick column of nerve tissue that links the brain to most of the nerves on the body? | Spinal cord |
| What part of the brain controls involuntary actions? | brain stem |
| What part of the brain controls coordination and balance? | cerebellum |
| What part of the brain controls thinking, speaking and memory? | Cerebrum |
| What are the two main types of memory? | short n long term |
| How are these types of memory different from one another? | Short term memory is where information is stored for about 30 seconds or less. Long term memory is formed through practice & repetition which strengthens neuron connections and allows information to be remembered for extended periods of time |
| Involuntary response that happens quickly | reflex |
| Maintaining internal balance or equilibrium | Homeostasis |
| In a reflex arc the impulse gets sent to the | Spinal cord |
| Chemicals that carry an impulse across the synapse | Neurotransmitter |
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Volleyball_Sydney_16