HPP LEC CHAP 8 Flashcards
Nervous System Functions
- Receiving sensory input
- Integrating information
- Controlling muscles and glands
- Maintaining homeostasis
- Establishing and maintaining mental activity
brain and spinal cord
Central nervous system
All the nervous tissue outside the CNS
Peripheral nervous system
Conducts action potentials from sensory receptors
to the CNS
Sensory division
Conducts action potentials to effector organs, such
as muscles and glands
Motor division
Transmits action potentials from the CNS to skeletal
muscles.
Somatic nervous system
Transmits action potentials from the CNS to cardiac
muscle, smooth muscle, and glands
Autonomic nervous system
A special nervous system found only in the digestive
tract.
Enteric nervous system
receive stimuli, conduct action potentials, and
transmit signals to other neurons or effector organs.
Neurons
supportive cells of the CNS and PNS, meaning these
cells do not conduct action potentials.
Glial cells
contains a single nucleus
Cell body
which is a cytoplasmic extension from
the cell body, that usually receives information from
other neurons and transmits the information to the
cell body
Dendrite
which is a single long cell process that leaves
the cell body at the axon hillock and conducts
sensory signals to the CNS and motor signals away
from the CNS
Axon
have many dendrites and a
single axon.
Multipolar neurons
have two processes: one
dendrite and one axon.
Bipolar neurons
have a single process
extending from the cell body, which divides into
two processes as short distance from the cell
body.
Pseudo-unipolar neurons`