Unit 2 Topic 2- Control And Communication
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What is the cerebrum responsible for?
• memory • personality • reasoning
What is the cerebellum responsible for?
• coordination • balance
What is the medulla responsible for?
• heart rate • breathing rate
What does the nervous system consist of?
• the brain • spinal cord • nerves
What makes up the Central Nervous System?
The brain and spinal chord
Name the 3 types of neurons
• sensory • inter • moror
What does the sensory neuron do?
Transmits electrical impulses from sense organs to interneurons
Where are interneurons located?
Inside the CNS
What does the interneuron do?
Transmits electrical impulses from the sensory neuron to the motor neuron
What does the motor neuron do?
Transmits electrical impulses from the interneurons to the muscles and glands
Describe the flow of information in the nervous system
• stimulus is detected by receptors in a sense organ which triggers an electrical impulse • the electrical impulse is carried along the sensory neurons to the CNS • in the CNS the electrical impulse travels along the interneurons • the CNS processes the information and another impulse is sent along a motor neuron • the motor neuron takes the impulse to a muscle or gland to produce a reaction/effect
What is a synaptic cleft?
The microscopic gap where neurons meet
How do neurons transfer messages?
Neurotransmitters diffuse across tte synapse and bind with receptor molecules on the membrane of the next neuron
If glucose levels increase insulin turns glucose into what substance?
Glucogen
If glucose levels decrease glycogen is turned back into glucose by what hormone?
Glucagon