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ANAT 100- Module 5 || Already Graded A+.
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Functions of the nervous system correct answers 1. Sensory Input 2. Integration 3. Motor Output 1. Sensory Input correct answers - sensory info from the external environment (ex. Temp) and the internal enviroment (ex. having to pee) is detected from sensory nerves and travel through the body...

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  • October 18, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • functions of the nervous system

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  • ANAT 100- Module 5
  • ANAT 100- Module 5

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ANAT 100- Module 5 || Already Graded A+.
Functions of the nervous system correct answers 1. Sensory Input
2. Integration
3. Motor Output

1. Sensory Input correct answers - sensory info from the external environment (ex. Temp) and
the internal enviroment (ex. having to pee) is detected from sensory nerves and travel through the
body to communicate with other nerve cells

2. Integration correct answers - puts all in the incoming sensory signals together to create a
complete picture of the enviroment
- occurs in the spinal cord or brain

3. Motor Output correct answers - the nervous system then produces an appropriate response by
sending output signals from the brain and spinal cord to the skeletal, cardiac, or smooth muscle
of the body, causing them to contract or relax

Organization of the Nervous System correct answers Central Nervous System (CNS) and
Peripheral Nervous System (PNS)

Central Nervous System (CNS) correct answers - brain and spinal cord
- control centre of the body
- where are the signals come in, are integrated, and where info can be stored

Peripheral Nervous System (PNS) correct answers - made up of nerves outside the brain and
spinal cord
- cranial nerves, spinal nerves, autonomic nervous system, and special sense organs
- the system that brings those signals to the CNS

Afferent Neruons correct answers - part of the sensory division and carry signals to the CNS

Efferent Neurons correct answers - part of the motor division and carry signals away from the
CNS

Cells in The nervous system correct answers - neurons (nerve cells)
- allow for communication between the CNS and PNS

Neuron structure correct answers - cell body
- cytoplasmic processes (dendrites, axon)

direction of nerve impulse correct answers - nerve impulses are rapid electrical signals that allow
communication
- UNIDIRECTIONAL (they only go in 1 direction)
- signals come in the dendrites to the cell body, down through the axon, and then reach the
dendrites of the next cell

, classification of Neurons correct answers - pseudo unipolar (unipolar) neurons
- bipolar neurons
- multipolar neurons

pseudounipolar neurons correct answers - 1 cellular process that extends from the cell body
(splits into a dendrite and an axon)
- the cellular process is the little part of the axon coming off the cell body
- ex. general sensory nerves

bipolar neurons correct answers - 2 cellular processes
- 1 dendrite and 1 axon that extend directly from the cell body

multipolar neurons correct answers - 3+ cellular processes
- multiple dendrites and 1 axon
- most common type
- ex. motor neurons

Supporting cells of the nervous system correct answers - neuroglia (glia)
function:
- protect and support neurons
- improve communication between nerve cells

4 types of glia correct answers - astrocytes
- microglia
- ependymal
- oligodendrocytes

astrocytes correct answers - on diagram in book, the blue ones
- large star shaped ones
- they communicate with neurons and blood vessels to maintain the integrity of the neural tissue
- most abundant glial cell in the CNS

microglia correct answers - small glial cells, protective functions in the CNS
- in diagram in book, the Pink ones
- they are able to engulf/destory (phagocytose) pathogens and eliminate waste products from
other cells
- least common type of glia cell

ependymal correct answers - cuboidal shape that lines the cavity of the brain and spinal cord
- assist in production, circulation, and monitoring of cerebral spinal fluid
- in diagram in book, the orange ones

Oligodendrocytes correct answers - on diagram in book, the purple ones
- important to myelinate parts of an axon (WRAPS MYELIN AROUND THE AXON)
- a single cell can myelinate up to 60 axons

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