Lab Quiz 1 Study Guide Flashcards
(126 cards)
What are the components of the CNS?
The brain and spinal cord
What are the components of the PNS?
all parts of the nervous system outside the CNS
Know the definition of a nerve (refer to activity 1)
Nerves are bundles of hundreds or thousands of axons of neurons and are part of the PNS.
What are the two types of nerves?
Cranial Nerves – arise from brain Spinal Nerves – arise from spinal cord
Name the two basic types of cells that make up the nervous system and their general role:
1) Neurons (receive and send information) 2) Neuroglia (support, protect, provide nutrients, and augment speed of travel/action potentials)
On a micrograph of nervous tissue you should be able to identify neurons and neuroglia, though not individual neuroglia. Micrograph of Motor Neuron: Define 3, 4, and 5.
- Dendrites
- Axon
- Axon Hillock
On a micrograph of nervous tissue you should be able to identify neurons and neuroglia, though not individual neuroglia. Micrograph of Motor Neuron: Define 6 and 7.
- Cell Body
- Nucleus of motor neuron
On a micrograph of nervous tissue you should be able to identify neurons and neuroglia, though not individual neuroglia. Micrograph of Astrocyte: Define 1 and 2.
- processes
- cell body of astrocyte
Know the major function and location (CNS or PNS): Astrocyte
CNS. Maintains environment around neurons, forms blood brain barrier.
Know the major function and location (CNS or PNS): Ependymal cell
CNS. Lines foud brain ventricles, forms and circulatese cerebrospinalfluid.
Know the major function and location (CNS or PNS): Microglia
CNS. Engulfs invading microbes; clears debris; migrates to injured nerves.
Know the major function and location (CNS or PNS): Oligodendrocyte
CNS. Processes from cell form melin sheaths around axons of neurons.
Know the major function and location (CNS or PNS): Satellite Cell
PNS. Covers sensory neuron cell bodies; maintains neuron environment
Know the major function and location (CNS or PNS): Schwann cell
PNS. Entire cell forms myelin sheath around a segment of an axon; helps regeneration of axons.
Define: Sensory neurons
Sensory neurons (afferent neurons) detect changes in the environment and transmit that information to the brain
Define: Motor Neurons
Motor neurons (efferent neurons) transmit information to tissues (effectors)
On a diagram of a micrograph you should be able to identify the following components of a neuron: Axon
- Axon
On a diagram of a micrograph you should be able to identify the following components of a neuron: Dendrites
- Dendrites
On a diagram of a micrograph you should be able to identify the following components of a neuron: Axon collateral
- Axon collateral
On a diagram of a micrograph you should be able to identify the following components of a neuron: Axon hillock
- Axon Hillock
On a diagram of a micrograph you should be able to identify the following components of a neuron: cell body
- Cell Body
On a diagram of a micrograph you should be able to identify the following components of a neuron: Myelin sheath
- Myelin Sheath
On a diagram of a micrograph you should be able to identify the following components of a neuron: Node of Ranvier
- Node of Ranvier
Know the structural classification of neurons
Mutlipolar, bipolar, and unipolar