Neuro (Exam 3) Flashcards
Central Nervous System (CNS)
brain and spinal cord
Peripheral Nervous System (PNS)
12 cranial nerves
31 pairs of spinal nerves
Autonomic Nervous System (ANS)
Somatic Nervous System (SNS)
How many cerebral hemispheres are there?
2
Frontal Lobe
personality, behavior, emotions, intellectual functions, skilled movement
Broca’s area!!
Primary motor cortex
Broca’s area
left speech-motor
Parietal Lobe
processing sensory data
postcentral gyrus
Occipital Lobe
vision and interpretation of visual data
Temporal Lobe
perception and interpretation of sounds and determination of source of sounds; smell
wernickes area!!
Wernickes area
left language-comprehension
Basal Ganglia
large bands of gray matter that form the subcortical associated motor system
help initiate and coordinate automatic movement of the body
Thalamus
brain relay station
Hypothalamus
maintaining homeostasis
Cerebellum
motor system which controls coordination of movement, equilibrium, posture, position sense of muscles and joints and body
Brainstem
midbrain, pons, and medulla
regulates heart rate, breathing, and swallowing
Crossover/Crossed Representation (CNS Pathways)
right cerebrum connects to left side of body and vice versa; left and right cerebral cortex
Left cerebral cortex receives…
sensory data from and controls the right side motor function
Right cerebral cortex receives…
sensory data from, and controls left side motor function
Descending Tracts (Motor)
lateral corticospinal tract (main voluntary motor, upper extremity motor pathways, are more medial)
ventral corticospinal tract (voluntary motor)
Ascending Tracts (Sensory)
dorsal columns (DC) (deep touch, vibratory, proprioception)
lateral spinothalamic tract (LST) (pain and temp)
ventral spinothalamic tract (VST) (light touch)
Spinal Nerves
mixed nerves; carry sensory (afferent) and motor (efferent) fibers
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal
PNS carries sensory messages…
TO CNS FROM sensory receptors
PNS carries motor messages…
FROM CNS TO muscles and glands
PNS sends automatic messages…
TO internal organs and blood vessels
Somatic system (PNS)
carry motor and sensory info (skin, sensory organs, skeletal muscles)
voluntary muscle movements