GET BRAIN MODEL

OBJ: Given notes, video, activity sheet SWBAT explain the structures and functions of the Central and Peripheral Nervous Systems with 70% accuracy.

BRING IN TEXTBOOKDN: HW check- How The Nervous System Works Booklet; Video: Divisions of the Nervous System

ACT: Introduction to Central Nervous System and Peripheral Nervous System (Notes) Text, read p. 182-189; Complete Divisions of the Nervous System Booklet

HW: Complete Divisions of the Nervous System Booklet; INERH Exam, March 23.

NERVOUS SYSTEM

CENTRALbrain + spinal cord (grey)

PERIPHERALeverything else (gold)

SOMATIC

concious, voluntary

AUTONOMIC

unconcious, involuntary

Reflex Arc

Central Nervous System Notes

Central Nervous System (CNS):

“control center” of the body; consists of brain and spinal cord.

Brain: controls most functions of the body

Spinal Cord: links brain to Peripheral Nervous System

Actual Human Central Nervous System

Central Nervous System NotesBrain: consists of three (3) parts:

Cerebrum: processes sensory information, mental processes (thought: learning, remembering, judgement; conciousness); largest part of brain. Left Half: Math, Science (analytical) Right Half: Music, Art, (creativity)Cerebellum: muscle coordination & balanceBrain Stem: primitive/basic involuntary activities (breathing, heartbeat, blinking eyes)

Central Nervous System Notes

Peripheral Nervous System NotesPeripheral Nervous System (PNS): consists

of all nerves outside of the Central Nervous System. Subdivided into the Somatic & Autonomic Nervous System.

Somatic Nervous System: controls voluntary actions (ex: taking notes, writing)

Autonomic Nervous System: controls involuntary actions; reflex actions (ex: blinking, breathing)

Peripheral Nervous System NotesReflex Action: autonomic response that occurs very rapidly and without concious control; helps to protect the body; muscle and spinal cord involvement but not the brain (see transparancy).

Nervous System Damage: Concussions and Spinal Cord injuries.

Concussion: bruise of the brain when brain collides against skull.

Spinal Cord injury: cut or crushed, resulting in paralysis (loss of movement) or death.

Reflex Action