Coordination and control Flashcards
week 15
what is nervous tissue made up of?
neurones and glial cells
define neurones
electrically active cells capable of transmitting information
what do neurones link?
to other neurones or muscle cells through synapses by releasing transmitter
define glial cells
supportive cells of various types
what is the function of glial cells?
provide mechanical support but also maintain an optimal physiochemical environment
what do some types of glial cells produce?
myelin - a lipid material that helps to insulate the axons of neurones
define sensory/ afferent
information flow towards CNS
define motor/ efferent
information flow away from CNS
what are the complex brain functions? (8)
intellect
consciousness
emotions
personality
motivation
association
memory
language
what are the divisions of the nervous system? (4)
brain
cranial nerves
spinal nerves
spinal cord
what are the components of the central nervous system? (2)
brain within the skull
spinal cord within the vertebral column
what are the components of the PNS?
cranial nerves
spinal nerves
associated ganglia
how many pairs of nerves are in the periphery of cranial nerves?
12
how many pairs of nerves are in the periphery of spinal nerves?
31
how many cervical nerves are in human spinal nerves?
8
how many thoracic nerves are in human spinal nerves?
12
how many lumbar nerves are in the human spinal nerves?
5
how many sacral nerves are in the human spinal nerves?
5
how many coccygeal nerves are in the human spinal nerves?
1
define autonomic nervous system (visceromotor system)
a nervous control system that functions largely below the level of consciousness and controls visceral functions
what are the functions of the endocrine system? (3)
cell communication
controls all major body processes
acts in partnership with the nervous system to control other systems of the body
what is the endocrine system made up of?
a collection of endocrine glands and tissues and their hormone products
