An instrument used to study the electric activity of the brain is the:
A. electrocardiograph
B. electroencephalograph
CT scanner
D. sonograph
查看答案
The root cortic/o means：
A. spinal cord
B. cerebral cortex
C. bone marrow
D. heart ventricle
Skeletal muscles are voluntarily controlled by the
A. central nervous system
B. somatic nervous system
C. parasympathetic nervous system
D. sympathetic nervous system
The word anencephaly means：
A. below the cerebrum
B. absence of a cerebellum
C. absence of a brain
D. membrane of a brain
The cells involved in most nervous system tumors are called
A. motor neurons
B. sensory neurons
C. interneurons
D. neuroglia
微信支付 
支付宝支付