Nervous System Flashcards
Three structures that protect the brain
Hard skull, meninges(membrane), and cerebrospinal fluid.
Function f brain
Control center of the body
Why does a teenage brain contribute to poor judgement
Brain isn’t fully developed, with dramatic changes to frontal lobe during puberty
Difference between grey and white matter
White matter is made up of the axon portion and relays messages from grey portion.
Grey matter is made up of cell bodies and store and receive impulses from the body and other parts of the brain
Cerebrum function
Learning, speech, emotion, reasoning, vision, touch, fine movements
Gyrus
A fold in the brain
Sulcus
Lines between the fold
Maintains posture, balance, and is responsible for movement
Cerebellum
Brain stem function
Maintaining respiration, circulation, body temp, sleep, digestion, and swallowing
Four lobes of cerebrum
Frontal lobe
Parietal lobe
Temporal
Occipital
Frontal lobe
Speech
Parietal lobe
Taste, speech, reading
Temporal lobe
Smell and hearing
Occipital lobe
Vision
Chemicals that move between synapses and continue to relay impulses between neurons
Neurotransmitter
Muscle control, memory formation, sensory response
Acetylcholine
Intestinal movement, mood regulation, appetite, sleep, muscle control
Serotonin
Reward pathways, cognition, and voluntary motion
Dopamines
Long term potential ions and memory
Glutamates
Order of spinal nerves
Cervical nerves Thoracic Lumbar Sacral Coccygeal
Cervical
Neck
Thoracic
Back
Lumbar
Legs
Sacral
Bowels
Where each nerve emerges from spinal cord
Root
Complicated interlacing nerve network
Plexus
Reflex arc is where
Somatic nervous system
Sym nervous system
Fight and flight
Para nervous system
Rest and digest
How many hemispheres does the cerebrum have
2
Medulla oblongata
Controls involuntary actions(breathing and heartbeat)
Midbrain
Regulates body movements (vision, hearing)
Pons
Posture
Movement
Thinking
Lateral ventricle
Circulates cerebrospinal fluid
Pituitary gland
Secretes hormones
Thalamus
Keeps track on sensations, senses pain, monitors inputs and outputs
Pineal gland
Produces melatonin
Sleep
Hypothalamus
Hunger, thirst, mood, body temp
Optic chiasma
Binocular visión
Arbor vitae
Sends signals to and from cerebellum
Tree
Where is broca and Wernicke área located
B: frontal
W: temportal
Broca’s area
Production of speech
Wernicke area
Developing language