B11HPY Anatomy Physiology of the Autonomic Nervous System Moodle 2017.ppt

Dr Vera Ralevic
School of Life Sciences
Nottingham University Medical School
Nottingham, NG7 2UH
[email protected]
ANATOMY & PHYSIOLOGY
OF THE AUTONOMIC
NERVOUS SYSTEM

OBJECTIVES
OBJECTIVES
1. Understand the anatomical organisation of the
autonomic nervous system, including the
arrangement of the main nerve cells which form
the parasympathetic and sympathetic systems
2. Describe the main functions of the
parasympathetic and sympathetic nervous
systems
3. Describe the main chemical neurotransmitters of
the autonomic nervous system and be aware of
their receptors

 Subconscious control
 Autonomic nervous system
- autonomous = self governing
“Visceral nervous system”
- control over internal organs
eg. heart rate, pupil diameter, blood vessel contractility, hormonal
secretions, gastrointestinal motility.
 Homeostasis
Introduction
10.00 am!
functions not under
voluntary control
The morning of the HPY exam

CENTRAL NERVOUS SYSTEM
(CNS)
PERIPHERAL NERVOUS SYSTEM (PNS)
SOMATIC
Controls striated muscle
AUTONOMIC (ANS)
Controls cardiac & smooth muscle, & glands
PARASYMPATHETIC SYMPATHETIC

Somatic nervous system – conscious control of skeletal muscles

Autonomic nervous system – unconscious control of cardiac, smooth
muscle & glands

Parasympathetic/sympathetic division is anatomical:–
based on CNS location of cell body of preganglionic nerve.
ENTERIC
EFFERENT division
(carries instructions
from CNS)
AFFERENT division
(carries instructions to CNS)

● Axons of the SOMATIC nervous system have: