Nervous System Flashcard

Front

How many synapses occur in a reflex arc?

Back

Two synapses occur in a reflex arc, consisting of one sensory neuron and one motor neuron.

Front

Which type of neuron carries the Efferent Signal?

Back

Motor Neuron carries the Efferent Signal, transmitting impulses away from the central nervous system.

Front

What is the function of the Myelin Sheath?

Back

The Myelin Sheath insulates the neuron to increase signal speed, allowing for faster transmission of electrical impulses.

Front

In the Reflex Arc, what type of neuron resides exclusively in the CNS?

Back

Interneuron resides exclusively in the Central Nervous System (CNS) and connects sensory and motor neurons.

Front

What is the term for all of the support cells in the nervous system?

Back

Glial Cells are the support cells in the nervous system, providing structural support, nourishment, and protection for neurons.

Front

What is the role of Sensory Neurons?

Back

Sensory Neurons transmit sensory information from receptors to the central nervous system.

Front

Define the term 'Reflex Arc'.

Back

A Reflex Arc is a neural pathway that controls a reflex action, involving sensory neurons, interneurons, and motor neurons.

Front

What is the difference between Efferent and Afferent signals?

Back

Efferent signals carry impulses away from the CNS to effectors, while Afferent signals carry impulses toward the CNS from sensory receptors.

Front

What are Schwann Cells?

Back

Schwann Cells are a type of glial cell that form the myelin sheath around peripheral nerves.

Front

What is the function of the Central Nervous System (CNS)?

Back

The Central Nervous System processes information and coordinates responses; it consists of the brain and spinal cord.