nervous sys/develp Flashcards
Most endocrine processes are regulated by ______ ______ systems, often
involving concentrations of specific ___ or _______
compounds
negative feedback, ions,chemical
The resting potential of a neuron is maintained by ______ differences in
of specific ions inside the
cell relative to ______ _______ the and by
selectiveof the plasma
membrane to these ions
concentrations, extracellular fluid, permeability
Depolarization of the neuron plasma membrane to threshold level generates_______ _____ an an electrical signal that
travels as a ____of depolarization along
the axon
action potential,wave
Saltatory Conduction
Depolarization skips along axon from one node of Ranvier to the next
The Hindbrain contains
Myelencephalon , Metencephalon
Metencephalon
cerebellum (muscle tone, posture, equilibrium)
pons (connects various parts of brain)
Myelencephalon
medulla (vital centers, other reflex centers)
cavity of medulla communicates with central
canal of spinal cord
Largest part of brain in fishes, amphibians and center for visual and auditory reflexes In reptiles, birds, mammals
midbrain
Brain Stem Consists of
medulla, pons, midbrain
The Forebrain includes
the diencephalon
the telencephalon
Thalamus
relay center for motor and sensory information
Hypothalamus
controls autonomic functions links nervous and endocrine systems controls temperature, appetite, fluid balance
Telencephalon
Includes the cerebrum the olfactory bulbs
during the evolution of the vertebrate brain, the _______ and ________ have become
larger and more complex
cerebrum and cerebellum
The Spinal Cord Transmits impulses to and from brain by
ascending tracts (transmit info to brain) descending tracts (transmit info from brain)
