NervousSystem
Cerebrum
Temporal Lobe
Occipital Lobe
Parietal Lobe
Insula Lobe(the hidden lobe)
Frontal Lobe
Thinking, planning, voluntary movements
Receives sensory info, Awareness
Hearing/Auditory Cortex, Olfactory(smell,) Recognition of faces, Language comprehension, emotional response
Visual Cortex
Gustation(taste,) General visceral sensations
Diencephelon
Hypothalamus
Epithalamus
Thalamus
All sensory info passes thru here, signals can be amplified or turned down . A relay station
Main visceral control center-regulates hunger/thirst. Controls endocrine system(hormones) Regulates sleep and wake cycles, thermostat for body. Emotion and formation of memories
Connects with limbic system. Contains pineal gland which secretes melatonin for sleep
Brain Stem
Medulla
Pons
Midbrain
Corpora quadrigemina
Superior colliculi
Receives input. Visual reflexes-eye movement/Auditory reflex
$ bumps-2 auditory reflex/2-hearing reflex
Cardiac center-keeps blood pressure, heart beat, breathing rate normal.
Reticular nuclei formation here. Serves as a message system between parts of brain.
Cerebellum
Middle peduncle
Inferioir peduncle
Superior peduncle
Efferent-white matter connects this to midbrain
Efferent-paired structure connecting cerebellum and pons
Afferent-needs proprioception and equilibrium. Helps with posture and balance
Spinal Cord
Cuada equina
Filum terminale
Conus medullaris
Located in L1/L2. The end of the spinal cord
"Horse tail" All of the spinal cord nerves will continue thru PNS from this point
An extension of the pia mater from the end of the spinal cord to tailbone. Helps spinal cord keep it's shape.
CNS protection
Anterior root
Visceral motor signals
Posterior root
Somatic sensory from PNS
Arachnoid space
Pia mater
Dura Mater
Epidural space
Tough d.i.c.t-periosteal layer-closest layer to brain
blood vessels and cerebral spinal fluid found here
Fiberous c.t. Very vascular, rich in capillaries
Filled with adipose. Just in spinal cord. Space for anethesia
Dural sinuses
Fill with oxygen poor blood and drain to recycle the blood
Broca's area
Area responsible for speech-talking, forming words(motor)
Wernike's area
Language comprehension-enables us to understand language
Association tract
Commissural tract
Stays in same hemisphere
Projection tract
Commissural tract
Same heisphere-able to read words and name objects
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Precentral gyrus
Primary motor cortex(lots of space dedicated to extremities)
Postcentral gyrus
Primary Somatic sensory cortex(space dedicated to skin, muscle, joints