Nervous System Flashcards
CNS is lacking in animals that
have radial symmetry
Cerebrospinal fluid is not
formed from layers of connective tissue
Fight-or-flight response is a part of the
sympathetic nervous system
The parasympathetic nervous system includes
resting and digesting
As vertebrates evolved, the increasingly complex structure of the brain conferred increasingly complex function, especially apparent in the _____.
cerebral complex, which is greatly expanded in non-human primates and cetaceans
Dolphins can be awake and asleep at the same time because _____.
one side of the brain can sleep while the other side maintains swimming and breathing behaviors
The unconscious control of respiration and circulation are associated with the
medulla oblangata
The coordination of groups of skeletal muscles is driven by activity in the
cerebellum
Emotion, motivation, olfaction, behavior, and memory, in humans, are mediated by the _____
limbic system
Which of the following shows a brain structure correctly paired with one of its primary functions?
frontal lobe - decision making
Evolution of Nervous System
- response to environment
- multicellular=cells become specialized for that response
- specialized cells became ganglia or brains
- higher animals show more organization in nervous systems
Nerve Nets
- scattered systems of neuron spread through the body
- simple, radially symmetrical animals
Cephalization
- clustering of neurons toward the anterior (head) end
- clusters give rise to organized central nervous systems
Forebrain
becomes cerebrum
Hindbrain
becomes cerebellum
