Chapter 2 2.2 Flashcards
Sensory - interneurons
Cells in the nervous system provide information to the brain about the environment.
Motor neurons
Cells in the nervous system that the brain uses to influence muscles and other organs to respond to the environment somehow.
PNS
The parts of the nervous system are not housed in bone.
CNS
The parts of the nervous system encased in bone, specifically, the brain and spinal cord.
The somatic nervous system
The subsystem of the peripheral nervous system carries messages between the central nervous system and the muscles.
The autonomic division - homeostasis
A subsystem of the peripheral nervous system that carries messages between the central nervous system and the heart, lunges, and other organs and glands.
Sympathetic nervous system
The subsystem of the autonomic nervous system that readies the body for vigorous activity.
Parasympathetic nervous system
The subsystem of the autonomic nervous system typically influences activity related to the body’s protection, nourishment, and growth.
Neural Network
Neurons that operate together to perform complex functions.
Spinal cord
The Part of the central nervous system within the spinal column relays signals from peripheral senses to the brain and conveys messages from the brain to the rest of the body.
Reflexes
Involuntary, unlearned feedback systems create swift, automatic movements in response to external stimuli.
Hindbrain
An extension of the spinal cord is contained inside the skull where nuclei control blood pressure, heart rate, breathing, and other vital functions.
Brainstem - Medulla & Pons
An area in the hindbrain that controls blood pressure,, heart rate, breathing, and other vital functions.
Cerebellum
The part of the hindbrain whose main functions include controlling finely coordinated movements and storing memories about movement, but which may also be involved in impulse control, emotion, and languages.
Reticular Formation
A network of cells and fibers treated throughout the hindbrain and midbrain that promotes alertness and arousal in the rest of the brain.
