Introduction To Nervous System-note 2

Question 1

3 basic functions of nervous system

Answer 1

Sensory (neurons)- info about changes within and around body. Send signals to CNS
Integrative (association neuron or inter neuron)- info brought together, creates sensations, thoughts, mem
Motor (neurons)- responses to signals sent from CNS to effectors aka muscles and glands

Question 2

Peripheral nervous system is divided into these systems..

Answer 2

Somatic nervous system aka skeletal muscles

Hutanamic nervous system aka smooth muscles and glands

Question 3

What are Neuroglial cells?

Answer 3

Supportive tissue of nervous system. There are five types

Question 4

Microglial cells function? 1 of 5 of the Neuroglial cells

Answer 4

Scatter throughout digest debris/bacteria

Question 5

Oligodendrocytes function? 1 of 5 Neuroglial cells

Answer 5

Provide insulation around axon in CNS

Question 6

Astrocytes function? 1 of 5 Neuroglial cells

Answer 6

Connect blood vessels to Neurons

Question 7

Ependymal cells function? 1 of 5 Neuroglial cells

Answer 7

Form a membrane that carves cavity in brain

Question 8

Swhwann cells function? 1 of 5 Neuroglial cells

Answer 8

Form insulating sheath around the nerves

Question 9

What is a reflex arc?

Answer 9

Neural circuit that travels through spinal cord but doesn’t need brain allows for reflex actions

Question 10

What happens if you stab yourself with thorn?

Answer 10

1. pain receptor in finger stimulates an afferent neuron
2. Afferent neuron transmits the impulse to the spinal cord
3. Interneurons integrate info
4. Efferent neuron stimulates the flexor muscle to contract
5. Response muscle contracts

Question 11

Central nervous system?

Peripheral nervous system ?

Answer 11

CNS- brain and spinal cord

PNS- nerves and ganglla.
31 spinal nerves and 12 cranial