starter #3 1.label the cavities to the right a. b. c. d. 2.what type of tissue is this? 1.what type...
TRANSCRIPT
STARTER #3
1. Label the cavities to the right
a.
b.
c.
d.
2. What type of tissue is this?
1. What type of tissue lines organs and cavities?
NERVOUS SYSTEM IPP 1016-1024
FUNCTION• Network of neurons that
communicate and control the body through electrical impulses
• Includes neurons, brain and spinal cord
NEURONS
NEURONS• Axons: extension of cell body• Axon terminal: end of the axon • Dendrites: receive messages from other
neurons
NEURONS• Dendrites: receive messages from other
neurons• Synapse: gap between neurons
NEURONS• Myelin sheath: lipid layer around axon
(insulator)
WHAT DO YOU SEE?
TYPES OF NEURONS
1. Sensory (5 types) – carry information from the senses back to the brain
2. Motor – brings message from CNS to muscles/glands.
3. Interneurons – connect sensory and motor and carry impulses between them.
SENSORY RECEPTORS ( 5 TYPES)
• Neuron that detects stimuli.
MECHANORECEPTORS
• Detect pressure and movement
• Sense: Hearing and touch
THERMORECEPTOR
Detect temperature
PAIN RECEPTOR
Detect tissue damage
CHEMORECEPTORS
• Detects chemicals
• Sense: Smell and taste
Are the lines straight or crooked?
PHOTORECEPTOR• Respond to
variation in light
• Sense: sight
ASSIGNMENT
Nervous System Microslides