science quiz 5/24

What is the CNS?

• Brain & spinal cord

• sensory messages towards the CNS

What is the PNS?

• Brain & spinal cord

• sensory messages towards the CNS

What are the 3 types of neurons?

• motor neuron

• sensory neurons

• interneruons (other)

• sensitive neurons

• nerve neruons

Where does the PNS carry sensory messages when first touching activating sensory

• Towards the CNS

• Away from the CNS towards muscles

What are sensory neurons?

• Takes messages towards the CNS, has sensory receptors ie: seeing, touch, hearing

• Takes messages away from CNS to muscle, organ or gland

What are motor neurons?

• Takes messages towards the CNS, has sensory receptors ie: seeing, touch, hearing

• Takes messages away from CNS to muscle, organ or gland

What are interneruons neurons?

• Takes messages towards the CNS, has sensory receptors ie: seeing, touch, hearing

• Takes messages away from CNS to muscle, organ or gland

• Receives messages from the sensory & interneurons in CNS, also connects sensory neuron's to motor neurons.

What are the 3 parts to the structure of a neuron

• Cellbody/soma

• Dendrites

• Axon

• Nerves

• Somatosin

In the structure of a neuron: what is the cellbody and where is it?

• Contains the nucleus & other organelles. Located in middle of biggest circle shape

• Extensions from the circle shape leading toward the cell body

• Conducts nerve impulses away from the cell body to other muscles

In the structure of a neuron: what is the dendrites and where is it?

• Contains the nucleus & other organelles. Located in middle of biggest circle shape

• Extensions from the circle shape leading toward the cell body

• Conducts nerve impulses away from the cell body to other muscles (long tube shape coming off circle shape)