SPLH 620 EXAM 1 (KU) QUESTIONSAND ANSWERSS 100%
CORRECT(SCORED A+)
what is the nervous system? - --Answerss----it is a system containing a
network of neurons and it controls body functions
what is the CNS? - --Answerss----central nervous system - made up of
brain and spinal cord,
what is the PNS? - --Answerss----peripheral nervous system -
sagittal plane - --Answerss----divides brain into right and left
coronal plane (frontal) - --Answerss----divides brain into anterior and
posterior
axial (transverse) - --Answerss----divides brain into upper and lower
what are the 2 basic cell types in the CNS? - --Answerss----neurons
(information carriers) and glia (support cells)
what do neuroglia do in general? - --Answerss----provide physical
support, nutrient flow, and nerve "housekeeping"
,what are the 3 primary types of neuroglia and what part of the NS are
they in? - --Answerss----astrocytes (CNS), oligodendroglia (CNS), and
Schwann cells (PNS)
what do astrocytes do? - --Answerss----- clean up local debris, including
dead neurons
- provide nutrients
- regulate chemical composition of extra cellular fluid
what do oligodendroglia do? - --Answerss----- provide support for axons
- produce myelin sheath
what is the makeup of myelin? - --Answerss----80% lipid and 20%
protein
what are the nodes of ranvier? - --Answerss----gaps in the myelin sheath
what do microglia do? - --Answerss----- smallest glial cells
- protects brain from invading microorganisms
what do Schwann cells do? - --Answerss----- support cells
- produce myelin
- each cell provides myelin for one neuron
, what is a neuron? - --Answerss----- nerve cell
- it is the information processing and transmitting element in the nervous
system
- 100 to 1000 billion in our nervous system
what are the 3 main parts of a typical neuron and what are their
functions? - --Answerss----1. dendrites- receive signals
2. cell body- integrate signals
3. axon- conduit to send signals
what are the 3 neuron types? - --Answerss----sensory (afferent), motor
(efferent), and interneurons
what is a sensory neuron? - --Answerss----- afferent
- a neuron that detects changes in the environment
what is a motor neuron? - --Answerss----- efferent
- a neuron that controls contraction of a muscle or secretion of a gland
what is an interneuron? - --Answerss----a neuron located entirely within
the CNS
neuron signaling can be either... - --Answerss----electrical or chemical
CORRECT(SCORED A+)
what is the nervous system? - --Answerss----it is a system containing a
network of neurons and it controls body functions
what is the CNS? - --Answerss----central nervous system - made up of
brain and spinal cord,
what is the PNS? - --Answerss----peripheral nervous system -
sagittal plane - --Answerss----divides brain into right and left
coronal plane (frontal) - --Answerss----divides brain into anterior and
posterior
axial (transverse) - --Answerss----divides brain into upper and lower
what are the 2 basic cell types in the CNS? - --Answerss----neurons
(information carriers) and glia (support cells)
what do neuroglia do in general? - --Answerss----provide physical
support, nutrient flow, and nerve "housekeeping"
,what are the 3 primary types of neuroglia and what part of the NS are
they in? - --Answerss----astrocytes (CNS), oligodendroglia (CNS), and
Schwann cells (PNS)
what do astrocytes do? - --Answerss----- clean up local debris, including
dead neurons
- provide nutrients
- regulate chemical composition of extra cellular fluid
what do oligodendroglia do? - --Answerss----- provide support for axons
- produce myelin sheath
what is the makeup of myelin? - --Answerss----80% lipid and 20%
protein
what are the nodes of ranvier? - --Answerss----gaps in the myelin sheath
what do microglia do? - --Answerss----- smallest glial cells
- protects brain from invading microorganisms
what do Schwann cells do? - --Answerss----- support cells
- produce myelin
- each cell provides myelin for one neuron
, what is a neuron? - --Answerss----- nerve cell
- it is the information processing and transmitting element in the nervous
system
- 100 to 1000 billion in our nervous system
what are the 3 main parts of a typical neuron and what are their
functions? - --Answerss----1. dendrites- receive signals
2. cell body- integrate signals
3. axon- conduit to send signals
what are the 3 neuron types? - --Answerss----sensory (afferent), motor
(efferent), and interneurons
what is a sensory neuron? - --Answerss----- afferent
- a neuron that detects changes in the environment
what is a motor neuron? - --Answerss----- efferent
- a neuron that controls contraction of a muscle or secretion of a gland
what is an interneuron? - --Answerss----a neuron located entirely within
the CNS
neuron signaling can be either... - --Answerss----electrical or chemical
