Presentation on theme: "N ERVOUS & E NDOCRINE S YSTEM. R ECEPTOR C ELLS Specialized cells in the sensory systems of the body that can turn other kinds of energy into action potentials."— Presentation transcript:
R ECEPTOR C ELLS Specialized cells in the sensory systems of the body that can turn other kinds of energy into action potentials that the nervous system can process Receptor cells in the eye turn light into a neural impulse the brain understands.
S ENSORY N EURONS Nerves that carry information to the central nervous system Connect the sense organs to the brain and spinal cord
M OTOR N EURONS Nerves that carry information from the central nervous system Carries messages from the brain and spinal cord to other parts of your body
I NTERNEURONS Nerve cells in the brain and spinal cord responsible for processing information related to sensory input and motor output
Most information travels from the body, up the spinal cord, is processed by the brain, sent back down the spinal cord, and then back to the body with behavior instructions. The exception to this general pathway is reflexes.
Reflexes are controlled by the spinal cord without any conscious effort on behalf of the brain. Reflexes serve as primitive responses that protect our bodies from danger and help us adjust to our surroundings.
C ENTRAL N ERVOUS S YSTEM The Central Nervous System (CNS) consists of the brain and the spinal cord.
P ERIPHERAL N ERVOUS S YSTEM Consists of Sensory and Motor Nerves connect the central nervous system to the rest of the body Peripheral means “outer region” The system is subdivided into the somatic and autonomic nervous systems.
A DRENAL GLAND Located just above the kidneys Arouses the body in times of stress Increase heart rate, blood pressure, and blood sugar Releases epinephrine (adrenaline) and norepinephrine (noradrenaline )
T HYROID GLAND Located in the neck Energy level, metabolism Body temp Hypo (underactive): sleepiness, reduced muscle tone, overweight Hyper (overactive): excitability, insomnia, ADD, agitation, difficulty focusing
S EX GLANDS Located in the pelvis (f), in and out of pelvis (m) Ovaries and testes influence emotion, physical development, reproductive characteristics Androgens – primary male hormone Estrogen – primary female hormone Males and females have both hormones