Peripheral nerves - Answer 31 pairs of nerves that attach to the spinal cord: 8 cervical, 2
thoracic, 5 lumbar, 5 sacral, and 1 coccygeal
anterior (ventral) root - Answer motor output out of spinal cord
posterior (dorsal) root - Answer sensory input to spinal cord
Dermatome - Answer the area of skin supplied by a single spinal nerve
, Concerning Nervous System Symptoms - Answer Headache
Dizziness
Weakness
Numbness
Loss of Sensation
Loss of Consciousness
Seizures
Tremors or involuntary movements
Other causes of involuntary movements - Answer Alcohol
Thyroid
Liver
Newborn skull - Answer Newborn's skull is disproportionately large. At birth it is already
25% of its adult weight and by age 2, it is almost 75% of the adult brain weight. Head
circumference provides a rough idea of how the brain is growing, which is why medical
checkups include measurement of skull circumference. The distance around the head
typically increases about 35% in the first year. Much more significant are changes in the
brain's communication system.
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