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...
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
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
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
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.08. You're not tied to anything after your purchase.
