Science 20-26

The Ventricular System is filled with

• cerebrospinal fluid
• blood
• lymph
• oxygen
• glucose

The Ventricular System narrows and becomes the cerebral aqueduct in the

• top of the brainstem
• cerebral cortex
• spinal cord
• thalamus
• medulla

CSF leaves the inside of the central nervous system and joins the fluids outside the brain in the

• meninges
• ventricles
• ganglia
• axons
• neurons

The fact that the brain is filled with CSF helps it

• float
• absorb nutrients
• produce electrical signals
• regulate body temperature
• filter toxins

The peripheral nervous system consists of

• nerves and ganglia
• bones and muscles
• blood and lymph
• organs and tissues
• hormones and enzymes

The somatic nervous system is under

• voluntary control

• involuntary control

• intermittent control

• autonomic control

• spontaneous control

The autonomic nervous system controls

• involuntary responses
• voluntary responses
• sensory perception
• motor functions
• cognitive processes

The sympathetic division of the autonomic nervous system is responsible for the

• "fight or flight" response
• rest and digest response
• sensory processing
• motor coordination
• conscious awareness

The parasympathetic division of the autonomic nervous system is responsible for

• "rest and digest" response
• "fight or flight" response
• sensory processing
• motor coordination
• conscious awareness

Neurons communicate using

• electrical and chemical signals
• mechanical and thermal signals
• light and sound signals
• magnetic and gravitational signals
• pressure and vibration signals