Nervous System Anatomy

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Tags

NGSS.MS-LS1-3

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

• Dendrites

• Axon Terminals

• Myelin Sheath

• Schwann Cells

• Dendrites

• Axon Terminals

• Myelin Sheath

• Schwann Cells

Voluntary control of skeletal muscles is provided by the:

• Somatic nervous system.

• Autonomic nervous system.

• Sympathetic nervous system.

• Parasympathetic nervous system.

• None of the above.

The parasympathetic division of our nervous system regulates

• Physical Activity.

• Skeletal muscles.

• Glands, smooth muscle and cardiac muscle.

• None of the above.

Tags

NGSS.HS-LS1-3

If someone is breaking into your house, this division of your nervous system might be activated:

• Parasympathetic division.

• Sympathetic division.

• Fight or flight response.

• Both b and c.

• All of the above.

The sympathetic division

• Increases heart rate, blood pressure, and respiration.

• Stimulates perspiration and release of glucose for energy.

• Stimulates digestion.

• Inhibits heart rate and respiration.

• Both a and b.

Tags

NGSS.HS-LS1-3

After a big meal you sit down in front of the TV and your body will probably

• Be using your sympathetic division.

• Be using your parasympathetic division.

• Be using no nerve activity at all.

• Be preparing for a fight or to flee.

• Both b and c.

Tags

NGSS.HS-LS1-3

Autonomic nervous system

• Consists of the brain and spinal cord.

• Division of the PNS that transmits action potentials from sensory organs to CNS.

• Efferent subdivision that transmits impulses from CNS to skeletal muscle.

• Consists of nerves, receptors, ganglia, and synapses outside the CNS.

• Efferent subdivision that transmits impulses from the CNS to smooth muscle, cardiac muscle and Glands.