Nervous System (Lecture and Laboratoty)

Question 1

bundle of many axons
that connects the CNS to sensory
receptors, muscles and glands

Answer 1

nerve

Question 2

how many pirs of cranial nerves and spinal nerves?

Answer 2

12 pairs of Cranial Nerves
31 pairs of Spinal Nerves

Question 3

collection of neuron
cell bodies located outside the
CNS

Answer 3

ganglion

Question 4

what is the main division of the nervous system?

Answer 4

CNS - Central nervous system
PNS - peripheral nervous system

Question 5

peripheral nervous system is divided into

Answer 5

sensory division (afferent division)
motor division (efferent division)

Question 6

conduct action
potentials from
sensory receptors
to the CNS

Answer 6

sensory division

Question 7

conduct action
potentials from
CNS to effector
organs (muscles
or glands

Answer 7

motor division

Question 8

motor division (efferent division) is divided into

Answer 8

somatic nervous system
autonomic nervous system

Question 9

transmits action
potentials from the
CNS to skeletal
muscles

Answer 9

somatic nervous system

Question 10

autonomic nervous system is divided into

Answer 10

sympathetic nervous system
parasympathetic nervous system

Question 11

transmits action potentials
from the CNS to cardiac
muscle, smooth muscle,
and glands

Answer 11

autonomic nervous system

Question 12

what are the cells of the nervous system?

Answer 12

neurons
glial cells

Question 13

Receive stimuli, conduct action
potentials, and transmit signals to other neurons or effector organs

Answer 13

neurons (nerve cells)

Question 14

what are the 3 parts of the neurons

Answer 14

• cell body
• dendrites
• axons

Question 15

• contains a nucleus - source of
  information for gene expression
• rough ER, golgi apparatus,
  mitochondria

Answer 15

cell body

Question 16

• short, highly branching
  cytoplasmic extensions
• receives stimulus from other
  neurons or sensory receptors

Answer 16

dendrite

Question 17

• a single long process extending
  from the neuron cell body
• transmits stimulus to a gland,
  muscle, organ, or other neuro

Answer 17

axon

Question 18

area where the axon
leaves the neuron cell
body

Answer 18

axon hillock

Question 19

conduct action potentials
towards the CNS

Answer 19

axon of sensory neurons

Question 20

conduct action potentials
away the CNS

Answer 20

axon of motor neurons

Question 21

types of neurons base on functional classifications

Answer 21

Sensory Neurons
Motor Neurons
Interneurons

Question 22

types of neurons base on structural classification

Answer 22

multipolar
bipolar
pseudo-unipolar

Question 23

*many dendrites and a single axon
*most CNS and most motor neurons

Answer 23

multipolar

Question 24

*have 2 processes (one dendrite and one axon)
*some sensory organs (Eye and nasal cavity)

Answer 24

bipolar

Question 25

*single processes extending from cell body
*one axon and dendrite-like receptors
*most sensory neurons

Answer 25

pseudo-unipolar

Question 26

protective wrapping around brain and
spinal cord

Answer 26

meninges

Question 28

specialized wrapping around axons

Answer 28

myelin sheath

Question 29

gaps in myelin sheath where action
potentials develop

Answer 29

nodes of ranvier

Question 30

nerve tissue exists as?

Answer 30

gray or white matter

Question 31

consist of group of neuron cell bodies and their dendrites

Answer 31

gray matter

Question 32

consist of bundles of parallel axons and their myelin sheaths, which are whitish in color

Answer 32

white matter

Question 33

inferior end of the spinal cord; spinal nerves exiting there resemble a
horse’s tail

Answer 33

Cauda equina

Question 34

where neurons of several spinal
nerves come together and
intermingle

Answer 34

plexuses