Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
The somatic nervous system consists of |
motor neurons that originate in spinal cord or brain and terminate on skeletal muscle |
|
|
Motor neurons release what neurotransmitter? |
Acetylcholine which stimulates muscle contraction |
|
|
1. ANS site of origin 2. SNS site of origin |
1. brain or lateral horn of spc 2. ventral horn |
|
|
1. ANS: # of neurons from origin to CNS to effector organ 2. SNS: # of neurons from origin to CNS to effector organ |
1. 2 neuron chain (pre and post ganglionic) 2. single neuron (motor) |
|
|
1. ANS: organ it innervates 2. SNS: organ it innervates |
1. cardiac and smooth muscles, exocrine and some endocrine glands 2. skeletal muscle |
|
|
1. ANS: Type of innervation 2. SNS: Type of innervation |
1. most effector organs dually innervated by smp and para 2. effector organ only innervated by motor neurons |
|
|
Neurotransmitter at effector organ 1. ANS 2. SNS |
1. Parasympathetic: Ach Sympathetic: N.E 2. Ach |
|
|
Effects on organs 1. ANS 2. SNS |
1. stimulate or inhibit 2. stimulate only |
|
|
Type of control 1. ANS 2. SNS |
1. involuntary 2. voluntary |
|
|
Higher centers involved 1. ANS 2. SNS |
1. spinal cord, medulla oblongata, hypothalamus, prefrontal associtation 2. spinal cord, motor cortex, cerebellum, basal nuclei, brainstem |
