nervous system

Question 1

functional unit, specialized cells that transmit impulses

Answer 1

neurons

Question 2

non conducting cells, provide nutritional and structural support

Answer 2

glial cells

Question 3

afferent neurons, sense and relay stimuli to CNS, unipolar, sometimes bipolar

Answer 3

sensory neurons

Question 4

clusters of sensory neurons in PNS

Answer 4

ganglia

Question 5

integrate and interpret sensory info, in brain and spinal cord, multipolar

Answer 5

interneurons

Question 6

relay info to effectors which produce a response, multipolar

Answer 6

motor neurons

Question 7

contain a single process connected to soma

Answer 7

unipolar

Question 8

contain 2 processes connected to soma

Answer 8

bipolar

Question 9

contain multiple processes connected to soma

Answer 9

multipolar

Question 10

dendrites, soma, axon, end brush

Answer 10

4 main parts of neuron

Question 11

cytoplasm extensions, branched, receive and transmit signals

Answer 11

dendrites

Question 12

contains large nucleus, contains organelles, receives and integrates impulses from dendrites, if large enough excitation, then impulse moves to axon hillock to axon

Answer 12

soma

Question 13

long extension of cytoplasm, carries nerve impulses to effectors or other neurons

Answer 13

axon

Question 14

slower, has to travel from each separate section

Answer 14

unmyelinated axon

Question 15

covered in myelin sheath made of schwann cells, which insulate neuron and prevent ion loss, nodes of ranvier which impulses jump to and from

Answer 15

myelinated axon

Question 16

contains axon terminal and axon terminal button which connects neurons through synapses

Answer 16

end brush

Question 17

sensory receptor, sensory neuron, interneuron, motor neuron, effector

Answer 17

reflex arc components

Question 18

doesnt have interneuron e.g. knee jerk reflex

Answer 18

monosynaptic reflex arc

Question 19

numerous neurons held together by connective tissue, located in PNS

Answer 19

nerves

Question 20

specialized cells that wrap around axons, forming myelin sheath in CNS

Answer 20

oligodendrocytes

Question 21

specialized cells that wrap around axons, forming myelin sheath in PNS

Answer 21

schwann cells

Question 22

star shaped glial cells that hold neurons in place in CNS, release gliotransmitters, regulate blood flow, oxygen and nutrients

Answer 22

astrocyte

Question 23

glial cells that provide physical support to neurons in PNS

Answer 23

satellite cells

Question 24

line cavities of CNS, make up walls of ventricles in brain, create & secrete cerebrospinal fluid

Answer 24

ependymal cells

Question 25

special immune cells only found in brain CNS, detect abnormalities and engulf bacteria and viruses using phagocytes

Answer 25

microglia

Question 26

where spinal cord exits

Answer 26

foramen magnum

Question 27

3 layers of connective tissue around spinal cord

Answer 27

meninges

Question 28

clustered spinal nerves

Answer 28

plexus