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Questions and Answers
What is the main difference between the Central Nervous System and the Peripheral Nervous System?
What is the main difference between the Central Nervous System and the Peripheral Nervous System?
- Type of nervous tissue
- Location of nervous tissue (correct)
- Function of transmitting information
- Number of neurons present
What is the function of enteric plexuses in the Peripheral Nervous System?
What is the function of enteric plexuses in the Peripheral Nervous System?
- Regulate the digestive system (correct)
- Control muscle movement
- Regulate the circulatory system
- Sense external stimuli
What is the purpose of sensory receptors in the Peripheral Nervous System?
What is the purpose of sensory receptors in the Peripheral Nervous System?
- To respond to external and internal conditions (correct)
- To produce hormones
- To transmit information to the CNS
- To regulate the autonomic nervous system
What is the main component of the Central Nervous System?
What is the main component of the Central Nervous System?
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How many pairs of spinal nerves emerge from the spinal cord in the Peripheral Nervous System?
How many pairs of spinal nerves emerge from the spinal cord in the Peripheral Nervous System?
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Study Notes
Central Nervous System (CNS)
- The CNS primarily consists of the brain and spinal cord.
- The brain is protected by the skull, while the spinal cord is housed within the vertebral column.
Peripheral Nervous System (PNS)
- The PNS comprises nerves, ganglia, enteric plexuses, and sensory receptors.
- 12 pairs of cranial nerves emerge from the brain.
- 31 pairs of spinal nerves originate from the spinal cord.
- Ganglia are small masses of nervous tissue located outside the brain and spinal cord.
- Enteric plexuses are extensive networks of neurons in the walls of organs in the gastrointestinal (GI) system, regulating digestion.
- Sensory receptors are specialized nervous tissues sensitive to internal and external conditions, such as touch receptors in the skin.
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