Lab Homework 8

The minimum voltage needed for the entire nerve to be stimulated is the _________

maximum recruitment voltage

An individual has exaggerated responses to stimuli during a _________ response.

hyperreflexic

What is the correct sequence for signal transmission during a polysynaptic reflex?

Stimulus, Sensory Neuron, Integration Center, Motor Neuron, Effector

What kind of reflex involves only two neurons?

Monosynaptic reflex arc

What is another name for an efferent neuron?

Motor neuron

In which part of the neuron is the nucleus found?

neuron cell body

Myelin is composed of __________.

lipoprotein

If the neuron has a soma with a dendrite on one side and an axon on the other, the neuron is classified as a __________.

Bipolar neuron

What are the three main parts of a neuron?

Axon, neuron cell body, dendrite

Which division of the nervous system is dedicated to subconscious function?

autonomic nervous system (ANS) of the motor division

Which type of glia line cavities and provide a barrier between the nervous tissue and the cerebrospinal fluid?

ependymal cells

What type of neuron is represented by this drawing? Label the parts as well.

Multipolar Neuron

A) Dendrite
B) Neuron cell body
C) Nissl body
D) Axon

What type of neuron is represented by this drawing? Label the parts as well.

Pseudo-unipolar neuron

A) Neuron cell body
B) Nucleus
C) Axon

Function of astrocyte

Nourish neurons, provide to blood-brain barrier between nervous tissue and blood, and contribute to synapse development

Function of ependymal cell

Line ventricles of brain and serve as a barrier between cerebrospinal fluid and nervous tissue

Function of oligodendrocyte

Produce myelin in CNS

The brain belongs to which division of the nervous system?

central nervous system

A spinal nerve belongs to which division of the nervous system?

peripheral nervous system

To which major division of the nervous system does the spinal cord belong?

central nervous system

What does CNS stand for?

central nervous system

Two adjacent neurons communicate with one another across a space. What is this space called?

synapse

In terms of function, how are glia different from neurons?

Support the nervous system

In which one of the three nervous system division are neurolemmocytes located?

peripheral nervous system

Define threshold voltage in nerve conduction?

Minimum voltage required for nerve conduction

Define maximum recruitment voltage in nerve conduction

Voltage where all neurons of a nerve is stimulated

Which structure receives a stimulus from the external environment and relays it to the sensory neuron?

Receptor

Define reflex.

Motor response to a stimulus without conscious thought

Polysynaptic reflexes have something not found in a monosynaptic reflex. What is it?

Interneurons

In terms of numbers of synapses, what kind of reflex is a patellar reflex?

Monosynaptic reflex arc

What action occurs with a hyperreflexic response?

An exaggerated response

What action occurs with a hyporeflexic response?

less-than-average response