19 ANS and effectors

19 ANS and effectors - Biology141(Physiology 1:04 AM...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
4/6/08 1:04 AM Biology141 (Physiology) Page 1 of 4 https://courses.bio.psu.edu/spring2008/biol141/Lecture%2019(2008).htm Biology141 (Physiology) Lecture 19 M. Whim AUTONOMIC NERVOUS SYSTEM [1]. BACKGROUND. ANS regulates organs whose functions are largely not under voluntary control. for example? autonomic nerves can have excitatory or inhibitory effects on their target organs. [2]. HOW IS THE AUTONONIC NERVOUS SYSTEM ORGANIZED? the output of the autonomic nervous system involves 2 neurons . 1. The first neuron has a cell body in the brain or spinal cord: this is called the preganglionic neuron . It synapses with: 2. The second neuron which has a cell body in a peripheral ganglion: this is called the postganglionic neuron . it is the postganglionic neuron that innervates the target organ. (a). The autonomic nervous system is divided into 2 divisions. it is split into the sympathetic nervous system and the parasympathetic nervous system . how are they arranged? (b). The sympathetic part of the ANS.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 4

19 ANS and effectors - Biology141(Physiology 1:04 AM...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online