The nervous system

Which part of the brain controls balance and body position?

• cerebrum
• medulla
• cerebellum
• impluses

Series of involuntary muscular contractions along the walls of the digestive tract are termed

• Peristalsis
• Epiglottis
• Pepsin
• Stomach

These parts of the brain are MOST important for maintaining homeostasis.

• cerebellum and frontal lobe
• hypothalamus and brain stem
• brain stem only
• cerebellum and hypothalamus

Tags

NGSS.HS-LS1-3

The afferent neuron:

• monitor changes both inside and outside body and sends signal to control center.
• gathers information and decides what to be done.
• activates effector organs

The neuroglial cell that produces myelin sheath.

• oligodendrocytes
• astrocytes
• ependymal cells
• microglial cells

What is the correct steps of action potential?
1.  sodium ions diffuse inward; the membrane becomes depolarized
2.  sodium channels open
3. potassium ions diffuse outward while sodium is actively transported out of the cell; the membrane becomes repolarized
4. potassium channels open

• 2,1,4,3
• 1,2,3,4,
• 4,3,2,1,
• 3,2,4,1,

The three main activities performed by the nervous system to maintain homeostasis are sensory, motor and

• secretion

• visual

• intergration

• temperature control

The autonomic nervous system is part of the

• brain

• peripheral nervous system

• central nervous system

• somatic nervous system

The cells that support nervous tissue function and form about 90% of the substance of the brain are called

• neuroglia

• schwann cells

• neurons

• fibroblasts

All multipolar neurons contain a cell body, numerous dendrites and a single

• axon

• myelin sheath

• nerve fiber

• both a and c