The Nervous system (2A) Flashcards
Types of neurons
Motor/efferent: from the central nervous system to skeletal muscles.
Sensory/afferent: from sensory sensations to the central nervous system.
Parasympathetic nervous system
Division of the autonomic nervous system that maintains the optimal and balanced functioning of the body.
Sympathetic nervous system
Activates muscles, organs and glands (mogs) when the body is faced with a stressor or threat. Division of the autonomic nervous system.
Skeletal muscles
Muscles connected to the skeleton that carry out voluntary motor movements.
MOGS
Muscles, organs and glands connected to the skeleton that are predominately self regulating, do not require conscious control.
Three examples of mogs
Eg; salivary glands, iris, heart, arteries etc.
Autonomic nervous system
A division of the peripheral nervous system that regulates visceral muscles, organs and glands. Transfers messages to central nervous system about their activity.
Somatic nervous system
A division of the peripheral nervous system that transmits neural messages related to voluntary motor movement.
Peripheral nervous system
A major division of the nervous system comprising every neuron in the body, outside the central nervous system. Is divided into the somatic nervous system and autonomic nervous system.
Spinal cord
A cable of nerve tissue extending from the brain, connecting it to the peripheral nervous system. It consists of afferent and efferent tracks and is mostly made up of interneurons.
Brain
A complex organ involved in the coordinnation of mental processes and behaviour and bodily activity regulation. Made up mostly of interneurons.
Central nervous system
A major subdivision of the nervous system, including the brain and spinal cord. It receives and transmits neural messages to and from the peripheral nervous system.
