Exam 2: ch.8 Flashcards
4 types of neural wave patterns, where their found, and what they mean
Alpha- parietal/occipital- awake and relaxed
Beta- frontal- visual stimuli/ mental activity
Theta- temporal/ occipital- newborns/ severe stress in adults
Delta-cerebral cortex-adult sleep/ awake infant (awake adult= brain damage)
How do we know about the brain? (3)
Historical experiments, injury, disease
5 ways the visualize the brain
EEG CT PET MRI Radioisotopes
The brain in development begins as a..
Neural tube (hollow)
What type of cells form the CSF
Ependymal cells
Gray matter in the brain means there is_____ myelin. And if found in the…
Little…cerebral cortex
White matter in the brain means there is______ myelin. And if found in the..
A lot of …..medulla
The brain receives about ____ of the total blood flow
20%
The cerebrum is made up of_______ and is the ______ portion of the brain responsible for ________
Right/ left hemisphere…..largest….higher mental functions
What connects the two hemispheres (cerebrum)?
Corpus Collosum
What is decussation?
Crossing over of nerve fibers
What is Wernickes area responsible for?
Speech comprehension
What is brocas area responsible for?
Mechanical performance of speech
Emotions are regulated by what two parts of the brain?
Limbic system and hypothalamus
What is another name for the limbic system
Rhinencephalon (small brain)
What are the 5 drives of the limbic system?
Aggression Fear Feeding Sex Goal directed
What are the 4 types of memory?
Sensory
Short-term
Long-term
Long term potentiation
What is the difference between declarative memory and procedural memory?
Declarative- facts/ trivia
Procedural-learning tasks/ processes
What are the 4 parts of the diencephalon? And what do they regulate?
Thalamus- promotes alertness
Epithalamus- (pineal gland–melatonin) diurnal cycle
Hypothalamus- produces releasing/ stimulating hormones and regulates homeostasis
Pituitary gland- (regulated by hypothalamus)
Posterior: storage of hypothalamus hormones: ADH (vasopressin)/ oxytocin
Anterior: produce stimulating hormones
How many cranial nerves are there and what is there functioning?
12 pairs…sensory motor or mixed
How many spinal nerves are there and what are their functioning?
31 pairs, all are mixed in function
