100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
Previously searched by you
DISTINCTION - BTEC Applied Science Unit 9 LA A Learning aim A: Understand the interrelationship and nervous control of the cardiovascular and respiratory systems$11.34
Add to cart
DISTINCTION - BTEC Applied Science Unit 9 LA A Learning aim A: Understand the interrelationship and nervous control of the cardiovascular and respiratory systems
FUNCTION OF THE NERVOUS SYSTEM- “The nervous system is mainly made of the brain,
spinal cord and neurons. But it mainly sends, receives and processes information from all parts of
the body”(Annets, F. et al, 2016). “The brain and the spinal cord are the main organs of the central
nervous system” (Annets, F. et al, 2016). “The peripheral nervous system has motor neurons that carry
information from the CNS to the organs, glands, muscles and also has sensory neurons that
transmit electrical impulses to the CNS from the organs or the external stimuli” (Annets, F. et al, 2016).
“The nervous system can be divided into two parts: the autonomic nervous system” (Annets, F. et al,
2016) and the somatic neuron system. P1
P1
Figure 01- Flowchart of the nervous system
P1
1
, Unit 9 LA A : Human Physiology & Reproduction
Figure 02- Diagram of the nervous system
P1
Figure 03- motor neuron Figure 04- sensory neuron
Structure and function of sensory & motor neurons and their environment in
cardiovascular & ventricular system-
Motor “neurons carry electrical impulses from the central nervous system to the effector organs,
which can be the muscles, glands, etc and sensory neurons carry electrical impulses from the
sensory receptors to the central nervous system” (Marina Aunapuu, 2021). Both of these cells contain the
cell body which contains the cell nucleus as well as other organelles, dendrites which are
extensions that conduct impulses to the cell body and links with neighbouring neurons, axon
which is a process that extends from the cell body to connect with muscles or glands and myelin
sheath, a material that prevents loss of impulses and enables rapid transportation of the electrical
impulse. Motor neurons have the node of Ranvier and axon hillock that sensory neurons do not
have. Sensory neurons have the sensory receptor and synaptic knobs that the motor neuron
does not have. P1
Figure- 05
Figure 04 shows the basic pathways of the nervous system.
“The autonomic system is the branch of the peripheral nervous system that regulates involuntarily
the functions of the internal organs like heartbeats and breathing and controls the smooth and
cardiac muscles, as well as glands.” (Waxenbaum, Reddy and Varacallo, 2021)
Control of ventilation-
The respiratory control centre is created by neurons found in the pons and medulla. These
neurons activate the main respiratory muscles, which are the intercostal and diaphragm muscles
and relay electrical signals to the primary respiratory muscles through the phrenic and intercostal
2
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 or Stuvia-credit 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 pharm2003. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.34. You're not tied to anything after your purchase.
