The Brain SC.912.L.14.26
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Transcript The Brain SC.912.L.14.26
The Brain
SC.912.L.14.26
The central nervous system (CNS) include the brain
and spinal cord. The CNS is composed of
interneurons that interact with other nerves in
body.
The peripheral nervous system (PNS) is the
collection of nerves that connects the CNS to all of
your organ system.
weighs about half the as much as a textbook
and has more than 100 billion neurons.
Cerebrum – Interprets signals from your body and forms
responses such as hunger, thirst, emotions, motion, and
pain.
Cerebral cortex – Interprets signals from your sensory
organs and generates responses.
Medulla oblongata – connects the brain to spinal
cord. It controls basic life- sustaining functions, such as
heart function, vomiting, swallowing and coughing.
Spinal Cord
Reflex arcs allow your body to respond quickly and
without thinking, as when your leg jerks after your doctor
taps your knee with a mallet.