Nervous System and Tissues

Question 1

What are the 3 functions of the Nervous System?

Answer 1

sensory input, integration, and motor output

Question 2

What are the 2 divisions of the Nervous System?

Answer 2

CNS and PNS

Question 3

What are the 2 functional divisions in the Nervous System?

Answer 3

Sensory/afferent- to CNS from sensory receptors and Motor/afferent- from CNS to effector organs

Question 4

What are the 2 motor divisions in the PNS?

Answer 4

Somatic: voluntary and control skeletal muscles and

Autonomic nervous system: involuntary and regulates activity of smooth and cardiac muscle and glands

Question 5

What are the 2 principal types of nervous tissues?

Answer 5

neuroglia: non-excitable cells that surround and wrap neurons and neurons: excitable cells that transmit electrical signals

Question 6

Are neuroglia or neurons more common?

Answer 6

neuroglia

Question 7

What are the neuroglia in the PNS?

Answer 7

astrocytes, oligodendroytes. microglial, and ependymal

Question 8

What are the two types of neuroglia in PNS?

Answer 8

Schwann and Satellite

Question 9

What are the functions in the oligodendrocytes?

Answer 9

processes form myelin sheath around CNS

Question 10

Which neuroglia line CSF cavities of brain and spinal cord?

Answer 10

ependymal cells

Question 11

Which cells are the defensive cells in the CNS?

Answer 11

Microglial cells which phagocytize microorganisms and cell debris and touch and monitor health of neurons

Question 12

What are the functions of astrocytes?

Answer 12

Most abundant that support and brace neurons, assist with exchanges between capillaries and neurons and control chemical environment