7 - Intro to Nervous System Flashcards
cells release chemicals, such as ___ of the endocrine system that ____. locally or long distances to be detected by ___ ____.
Hormones diffuse to be detected by chemical receptor proteins on another cell.
what is the neuroendocrine function?
when neurons use chemical signaling by releasing hormoes from their output zones
what are the sensory inputs responsible for?
cues from external and internal environment - inside and outside of the body.
what are the motor responses responsible for?
responding to sensory information. Conscious and unconscious responses.
what is included in the Anatomical Subdivision of the NS?
- central nervous system
2. peripheral nervous system
what is included in the Functional Subdivision?
- somatic nervous system
2. autonomic nervous system
What does the central nervous system consist (CNS) of?
brain and spinal cord
what does the peripheral nervous system (PNS) consist of?
Everything else outside of the brain and spinal cord.
what are afferent pathways?
neuron signals that travel toward the CNS (sensory)
what are efferent pathways?
neuron signals that travel away from the CNS (motor and glands)
the somatic nervous system involves CNS outputs to the PNS that are _____ controlled.
voluntarily
the autonomic nervous system involves CNS outputs that are _____ controlled.
involuntarily
what does the sympathetic nervous system direct?
body activity under stressful conditions. Fight or Flight.
what does the parasympathetic nervous system direct?
body activity under restful circumstances. Rest and repose.
what are the two cells of the nervous system?
neurons and glial cells
