CH 3 pt 2

-peripheral nervous system
-the nervs that run throughout the body
-two parts (automatic and somatic)
-somatic carries sensory signals from the body to the cns and motor signals to the skeletal muscles. Also called the voluntary system. Allows for movement.
(basically mostly respnsiblle for voluntarry movement and reflex arcs and helps us process senses like taste touch and smell)
-autonomic system is aka the involuntary system as it controls the involuntary tthings such as digestion and breathing. carries signals from the cns to the internal organs and vice versa.
-has 2 parts (sympathetic and para sympathetic)
-sympathetic is aka fight or flight(increases energy)increases heart rate
-parasympathetic is aka rest and digest(conserves energy) slows heart rate, increases digestion

-central nervous system
-brain and spinal cord

frontal, occipital, parietal, temporal

Reasoning, decision making, fluent speech, personality/ motor cotex

somasensory cortex/ processes sensory information (taste, touch, temperature)

Hearing(sensory output)

vision

gyri are the folds and bumps of a brain while sulcri are the indenationsrooves

amagdyla, hypothalamus, thalamus, cingulate cortex, hippothalamus

fearful and anxious emotions

memory

cognition and regulates emotions

motivation behaviors(hunger, sex, thirst, sleep)

(your brains relay station) relays motor and sensory signals to the cerebral cortex

coordination and movement related to motor skills. helps with walking, balance, and posture.(balance coordination and movement)

connects brain to the spinal cord
-has 3 main parts
-medula responsible for regulating heart rate and breathing
pons- links to cerebellum, arousal, dreams
midbrain-sleep/wake cycles

learning disorders

the removal of brain structures/parts of the brain to ascertain their function

speaking impairment, difficultty getting words out/difficulty with language production. Can still understand language perfectly fine

Can speak just fine but has difficulty understanding language/ difficulty with language comprehension

left hemisphere

The left brain handles reading, writing, and calculations. Some call it the logical side of the brain. The right brain is more visual and deals in images more than words(creative side)

connects the left and right brai hemispheres and ensures they can communicate with eachother

Brain waves are studied by placing electrodes on
the scalp.
– When neurons fire, they produce electrical fields,
and researchers can record electrical activity in
response to certain stimuli.

Small amounts of radiation are injected into the
blood and tracked.
– The area of the brain that is active uses more blood.
– The radiation shows up on brain images.

-to veiw brain structures
– Uses a giant magnet to align atoms in your brain

– Brain Activity
– Measures Blood Oxygenation
• More oxygen in blood = more activity (valid assumption?)

cells that hold nerve cells in place and help them work the way they should