nervous system & endocrine system nervous system: sending messages fast but they don’t last...
TRANSCRIPT
Nervous System & Endocrine System
Nervous System: Sending messages fast but they don’t last long
Endocrine System: Sending messages slowly but they last a long time
•Types of Neurons
•Parts of the Nervous System
•Glands & Hormones of the Endocrine System
Endocrine SystemUses hormones that travel through the bloodstream. Takes
longer to get there but lasts a long time
3 types Neurons
Types of Neurons
Sensory Motor Interneurons
SpinalCord
BrainSensoryNeuron
Sensory Neurons• INPUT From sensory organs to the brain and spinal
cord
Drawing shows a somatic neuron
SpinalCord
BrainSensoryNeuron
MotorNeuron
Motor Neurons
• OUTPUT From the brain and spinal cord, to the muscles and glands
SpinalCord
BrainSensoryNeuron
MotorNeuron
Interneurons
• Interneurons carry information between other neurons only found in the brain and spinal cord
The ReflexWorks by bypassing the brain so you can react quicker.
Sensory Neuron Interneuron Motor Neuron
A Neural Chain
A Neural Chain
A Neural Chain
A Neural Chain
A Neural Chain
A Neural Chain
The Nervous System:Sends messages quickly but they don’t last long.
Broken into two parts:
• Central Nervous System (CNS)– Brain and spinal cord
• Peripheral Nervous System (PNS)– Carries messages to and from CNS
Central nervous system
Peripheral nervous system
The Nervous System: It breaks down into two parts.
Sympathetic and parasympathetic divisions of the nervous system
Summary of autonomic differences
Autonomic nervous system controls physiological arousal
Sympatheticdivision (arousing)
Parasympatheticdivision (calming)
Pupils dilate EYES Pupils contract
Decreases SALIVATION Increases
Perspires SKIN Dries
Increases RESPERATION Decreases
Accelerates HEART Slows
Inhibits DIGESTION Activates
Secrete stresshormones
ADRENALGLANDS
Decrease secretionof stress hormones