11.3 PNS Flashcards
1
Q
Somatic system (2)
A
- associated with the voluntary control of body movements through the skeletal muscles and mediation of involuntary reflex arcs.
- Consist of sensory receptors in the head and extremities, nerves that carry instructions from the CNS to the skeletal muscles
2
Q
Autonomic System (4)
A
Control glandular secretions and the functioning of smooth and cardiac muscles
- not voluntary
- contains sympathetic and parasympathetic
- controlled by the hypothalamus and medulla
3
Q
Sympathetic nervous system
A
Activated in stressful situations
Flight to fight
release epinephrine (excitatory effect on its target muscles)
4
Q
Parasympathetic nervous system
A
Activated when the body is calm and at rest
acts to restore and conserve energy
