The Nervous System Flashcards
ability to produce purposeful movement of the extremities and postural adjustments in response to activity and environmental demands….
motor control
What are the 2 major parts of the nervous system?
1) CNS
2) PNS
The CENTRAL NERVOUS SYSTEM contains the…..
brain & spinal cord
What are some of the functions of the CNS?
- controlling functions
- regulating consciousness
- maintaining awareness
The PERIPHERAL NERVOUS SYSTEM contains…..
the nerve cells outside of the CNS
The PNS is divided into 2 systems……
afferent & efferent
The AFFERENT PNS system carries impulses _______ the CNS
TOWARD
The EFFERENT PNS system carries impulses _____ the CNS
AWAY from
How many pairs of cranial nerves are there?
12 - carries impulses to and from the brain
How many pairs of spinal nerves are there?
31 pairs
The PNS is also divided into…..
somatic & autonomic system
The SOMATIC nervous system (PNS) is……
voluntary
The AUTONOMIC nervous system (PNS) is…..
automatic
What are the parts of the neuron?
1) dendrite
2) cell body
3) axon
sensory receptors in the skin are called…..
dermatomes
What are the segments of the spinal cord?
- 8 Cervical
- 12 Thoracic
- 5 Lumbar
- 5 Sacral
- 1 Coccygeal
usually occurs at child birth when there is traction on the brachial plexus (nerve roots C5-6-7)…..
Erb’s Palsy
injury to the long thoracic nerve……
Scapular Winging
injury to the radial nerve……
Wrist Drop
injury to the median nerve affecting the thumb….
Ape-Hand
injury to the ulnar nerve……
Claw Hand
injury to the common peroneal nerve……
Foot Drop
