biology 2 summary notes ( homeostasis, immune, endocrine, nervous)

Nervous System




I
L




Central N S
.

Peripheral N S
.




master control
·




link to outside
unit world




Brain Brain Stem Spinal Cord

·
hindbrain ·
nerves
·
connects

between brain Automatic NS Somatic NS
·
midbrain brain to the
and peripheral · self directed
forebrain spinal cord carries
· n . S
sensory
·

involuntary info
processes ·
sensory organs
· hear t rate ,
breathing , to C .
N . S

brinking ,

digestion m ove m e n t

·
voluntary movement




Sympathic Parasympathic
calms body
prepares body for action
c o n s e r ve energy
· uses ATP-> endocrine

·

fight or flight
·
ATP - ac tion

, Somatic Automatic


voluntary movement involuntary

re c e i ve s information functions
sensory u n con s ciou s physiological

conscious movement
breathing , pupil dilating
S




lifting h an d ,
punching organs

· muscles




↓ e u ro n




dendrites
&



=]n
conducts ac tion potential




-
axon
:




P Away from cell
body

cell
postsynaptic
e

synapse dendrites bring info
:




I -
b -I-popoog
axons from other neurons/sensory cells




I body
TOWARDS Cell


↑ & L


E
&
0- ~ F
n N -
2
-




I ↑
1

my elin synaptic
sheath terminal
branches


S i

cell
presynaptic