Anatomy Ch. 12 Study Guide

Anatomy review for the nervous system - Week 12 Study Guide

Distinguish the difference betwee

n neuron, neuroglial cells, Schwann cells, neurofibrils, and astrocytes.

Neurons are masses of nerve cells in nervous tissue, neuroglial cells provide neurons physiological requirements, schwann cells are larger axons of peripheral neurons enclosed in sheaths, neurofibrils are long thin fibrils that run through body of neuron to give shape and support and astrocytes are found between neurons.

What is the difference between dendrites and axons? Axons only have one cell per body and carry nerve impulses away from cell body; dendrites carry impulses TO the cell body and there are usually multiple.

What color does myelin (the lipid-protein layers that form a sheath around an axon) appear? White

What are the 2 main parts of the nervous system? Central and peripheral

What are 3 functions of the nervous system? detect changes, make decisions, stimulate muscles to respond

What is the junction between 2 communicating neurons called? synapse

What are the simplest nerve pathways called? reflex arc

Put the following in the correct sequence to identify the path a reflex arc takes: effector, sensory neuron, motor neuron, receptor, interneuron. receptor, sensory neuron, interneuron, motor neuron, effector

What are the membranes called that are located between the bone and soft tissue of the nervous system? meninges

There are 3 layers of membranes of the nervous system. Name them in order starting with the outer layer. dura mater, arachnoid mater, pia mater

Between what 2 layers is the CSF found? between arachnoid and pia mater