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,▪ If the body is to maintain homeostasis and function effective
trillions of cells must work together in a coordinated fashio
▪ The cells of the body communicate by two communic
systems;
▪ nervous system: specialized for the rapid transmissio
signals via electrical and chemical means from cell to cell,
▪ endocrine system: specialized for sending che
messengers (hormones) through the blood.
▪ The most important aspect of both systems is that, they …
▪ detect changes in an organ, modify its physiology, and mod
that of other organs.
,▪ The nervous system carries out its task in three basic steps:
▪ sense organs receive information about changes in the body
the external environment, and transmits coded messages to
spinal cord and the brain
▪ brain and spinal cord processes this information,
▪ relates it to past experiences, and determine what response
appropriate to the circumstances
▪ brain and spinal cord issue commands to muscles and gland
to carry out such a response
▪ Thus, the fundamental purpose of the nervous system is its sen
integrative, and motor functions
▪ all work together to maintain homeostasis.
, ▪ The nervous system is composed of;
▪ Brain
▪ spinal cord
▪ sensory receptors
▪ ─ and all of the nerves that connect these organs with the
rest of the body
▪ Together, these organs are responsible for the control of
the body and communication among its parts.
,▪ If the body is to maintain homeostasis and function effective
trillions of cells must work together in a coordinated fashio
▪ The cells of the body communicate by two communic
systems;
▪ nervous system: specialized for the rapid transmissio
signals via electrical and chemical means from cell to cell,
▪ endocrine system: specialized for sending che
messengers (hormones) through the blood.
▪ The most important aspect of both systems is that, they …
▪ detect changes in an organ, modify its physiology, and mod
that of other organs.
,▪ The nervous system carries out its task in three basic steps:
▪ sense organs receive information about changes in the body
the external environment, and transmits coded messages to
spinal cord and the brain
▪ brain and spinal cord processes this information,
▪ relates it to past experiences, and determine what response
appropriate to the circumstances
▪ brain and spinal cord issue commands to muscles and gland
to carry out such a response
▪ Thus, the fundamental purpose of the nervous system is its sen
integrative, and motor functions
▪ all work together to maintain homeostasis.
, ▪ The nervous system is composed of;
▪ Brain
▪ spinal cord
▪ sensory receptors
▪ ─ and all of the nerves that connect these organs with the
rest of the body
▪ Together, these organs are responsible for the control of
the body and communication among its parts.
