Exam (elaborations)
Distinction example of 9A
- Institution
- PEARSON (PEARSON)
Distinction example of 9A applied science
[Show more]
Seller
Follow
Content preview
Name : Janice Kuru9A Human Regulation and Reproduction
Learning Aim A pass - Describe the organisations and functions of the nervous
system in the relation to cardiovascular and respiratory requirements.
Function of human Nervous System
The function of the nervous system is to transfer signals between the brain and the
rest of the body, therefore this means due to the nervous system we have the
capability to move, breathe and conduct other activities. The nervous system
consists of several components including the brain , spinal cord and a group of
neurons. Moreover the human nervous system ensures that it collects sensory input
from the body to outside environments.
What are the components of the central and peripheral nervous system
(1) The central nervous system - is made up of the brain and also the spinal cord
both these hold up to about 100 billion nerve cells and the cells are made up from
neurons. The role of the neurons is to carry messages but as a form of signals that
are electrical which is sent from one part of the body to another part of the body. The
function of the nervous system is to simply receive the information , interpret it and
then send off the information to different parts of the body.
The peripheral nervous system - is made up by two divided parts which are called
the somatic and autonomic nervous systems.
The organisation of the nervous system
What are the somatic and autonomic nervous systems
,Name : Janice Kuru
9A Human Regulation and Reproduction
The somatic nervous system - can also be referred to as the voluntary nervous
system and the reason for this is because the actions that it performs are under
conscious control. The somatic nervous system is a small section of the peripheral
system as a whole , it includes a variety of different neurons which contribute
towards the skeleton muscles and also the skin. Furthermore the somatic nervous
The system includes sensory neurons which help transmit the impulses to the central
nervous system from all the different parts of the body and also the motor neurons
which also help to transmit impulses to the muscles.
The autonomic nervous system - However compared to the somatic nervous
system, the autonomic nervous system referred to as the involuntary nervous system
and the reason for this is it allows the functional of the internal organs without a
conscious control , this means that the autonomic nervous system the autonomic
nervous system controls the involuntary responses however it is also possible for it
to also gain some of the voluntary control over these responses. The autonomic
responses take over control with specific things such as emptying the bladder and
even opening the anal sphincter. The autonomic nervous system includes two
parts : the parasympathetic nervous system which is in control of the body's function
on a normal day basis and also the sympathetic nervous system which prepares the
body for scenarios which can be an emergency.
The two different types of cell that make up the nervous system
(1) Neurons - the main purpose of this is to transmit electrical information to and
also from the brain and also the nervous systems , there are two main types of
neurons it's called myelinated and unmyelinated . The myelinated neurons usually
conduct electrical impulses a lot faster than the unmyelinated neurons . The
myelinated neurons are usually found in the peripheral nervous systems. This is
because they make sure that they carry out impulses which are from the sensory
receptors to the central nervous system then to the effectors.
Glial cells - usually act as the support for the neuron by carrying out tasks such as
the digestion of the dead neurons and also the manufacture of the components
included within the neurons. In addition the glial cells also contribute towards
helping and protecting the neurons and also helping with its nutrition therefore this
helps when maintaining homeostasis . Glial cells also do not conduct information but
help the neurons in alternative ways.
, Name : Janice Kuru
9A Human Regulation and Reproduction
Labelled diagram of a sensory and motor neuron
Functions of each labelled part
Structure Function
Dendrites This is a very thin extension of the
cytoplasmic membrane and the function
of this is to conduct the impulses to the
cell body and also link with its
surrounding neurons.
Receptor cells These are protein molecules which have
substances such as hormones , drugs
and also antigens can then bind to.
They then respond to different
chemicals, pressure or light.
Axon This is a long process which extends
from the main cell body and the reason
for this is because it transmits the
impulses away from the cell body in
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 User2570742. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76669 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now