Do Now Give three examples of involuntary processes in the human body

Do Now

• Give three examples of involuntary processes in the human body.

Autonomic Nervous System

Review• 3 types of muscle cells

• Parts of a neuron

Review: Human Nervous System

• 2 Parts:– C______ Nervous System– P______ Nervous System• __________ Nervous System• __________ Nervous System

– Sympathetic Division– Parasympathetic Division

Somatic

• Peripheral Nervous System

• Voluntary movement– Conscious control

• Skeletal muscle

Autonomic

• Peripheral Nervous System

• Involuntary movement– Not under conscious control

• Smooth Muscle• Cardiac Muscle

Divisions of Autonomic Nervous System

• Parasympathetic• Sympathetic

• Serve the same organs (except skin, some glands)

• Divisions work together and balance out

Parasympathetic

• “Rest and Digest” system

• Normal body maintenance and function

• Craniosacral system– Brain stem (medulla

oblongata), sacral region of spinal cord

• Internal organs

Sympathetic

• “Fight or Flight” system• Thoracolumbar system• Controls ALL parts of

the body– Skin, sweat, pupils, hair,

blood vessels, heart rate, breathing, etc.

Exit Ticket

• Write the following question and your answer on the sheet with your Do Now.

• Thinking ahead: Since the parasympathetic and sympathetic divisions of the nervous system serve (mostly) the same organs, how can their opposite effects be explained?

What’s Next?

• Anatomy and physiology of the spinal cord, muscles, organs involved in autonomic nervous system

• Propagation of an action potential down a neuron, pre and postganglionic

• Neurotransmitters• Reflexes• Regulation of somatic and autonomic nervous

system• Nervous System Disorders