Practice test 2

Question 1

the patellar knee jerk reflex is an example of a

Answer 1

somatic reflex

Question 2

white and gray rami communicantes connect ___ and _____

Answer 2

spinal nerves
sympathetic ganglia

Question 3

____ produce myelin sheaths around axons in the central nervous system

Answer 3

oligodendrocytes

Question 4

the ___ integrates visual info with other sensory input to initiate reflex responses to visual stimuli

Answer 4

superior colliculi

Question 5

lateral spinothalamic tracts carry sensory info related to

Answer 5

pain and temp

Question 6

cell bodies of most sensory neurons reside in the

Answer 6

dorsal root ganglia

Question 7

sensory fibers are organized by

Answer 7

the type of info that they carry touch pain

Question 8

within a tract, sensory fibers entering more

Answer 8

superiorly reside more laterally

Question 9

second order neurons typically decussate in the

Answer 9

spinal cord or brain stem

Question 10

cranial nerves that innervate an extra ocular muscle that moves the eye

Answer 10

abducens, oculomotor, trochlear

Question 11

each pair of spinal nerves monitars a specific region of the body surface called

Answer 11

dermatome

Question 12

the visual cortex is located within the ____ of the cerebrum

Answer 12

occipital lobe

Question 13

lower motor neuron that stimulates muscle fibers in the thigh can be activated by a sensory neuron or by an upper motor neuron this is an example of

Answer 13

convergence

Question 14

the medulla oblongata deals with

Answer 14

autonomic control of visceral activities

Question 15

what structure allows cerebrospinal fluid to be recycled back into the bloodstream

Answer 15

arachnoid granulation

Question 16

motor control of speech is concentrated in ____ which is typically located in the ____ cerebral hemisphere

Answer 16

speech center
left

Question 17

what part of neuron releases neurotransmitters via exocytosis

Answer 17

axon terminal

Question 18

hypothalamus controls the bodys water balance through production of

Answer 18

antidiuretic hormone

Question 19

hypothalamus subconsciously controls motor activity associated with

Answer 19

various emotions

Question 20

hypothalamus coordinates activities of the

Answer 20

endocrine and nervous systems

Question 21

hypothalamus helps to regulate

Answer 21

body temp

Question 22

which of the following is a response associated with the sympathetic nervous system

Answer 22

dilation of the airway

Question 23

the outermost layer of a peripheral nerve is a tough sheath of fibrous connective tissue called the

Answer 23

epineurium

Question 24

the primary motor cortex is located in the

Answer 24

precentral gyrus

Question 25

sensory info conveyed by the spinocerebellar tracts is processed in the

Answer 25

ipsilateral cerebellum

Question 26

the parasympathetic divison of the autonomic nervous system is characterized by

Answer 26

long preganglionic fibers

Question 27

the falx cerebri which attaches to the crista galli of the ethmoid, is an extension of the

Answer 27

dura mater

Question 28

the corpus callosum is composed of

Answer 28

commissural fibers

Question 29

neurons undergo mitosis to replace old nerual tissue but only do so every

Answer 29

10 years

Question 30

anaxonic neurons can receive signals from other neurons but they cannot send

Answer 30

signals to themselves

Question 31

all spinal cord neurons are connected via

Answer 31

gap junctions and communicate without neurotransmitters

Question 32

which glial cells are involved in maintaing the blood brain barrier

Answer 32

astrocytes

Question 33

which of the follwoing nerves arise from brachial plexus

Answer 33

radial axillary ulnar median

Question 34

sensory nerve

Answer 34

CN VIII

Question 35

most upper motor neurons decussate in the

Answer 35

medulla oblongata

Question 36

intramural ganglia are associated with the

Answer 36

parasympathetic nervous system

Question 37

mixed nerves

Answer 37

contain both sensory and motor neurons

Question 38

around the brain and spinal cord cerebrospinal fluid flows within the

Answer 38

subarachnoid space

Question 39

als occurs due to the degeneration of

Answer 39

upper and lower motor neurons

Question 40

motor neurons exit the spinal cord via the

Answer 40

ventral root

Question 41

major region of adult brain that deveops from the primary brain vesicle known as the prosencephalon

Answer 41

cerebrum/thalamus/hypothalamus

Question 42

glial cells are ciliated and contribute to the production and circulation of cerebrospinal fluid

Answer 42

ependymal cells

Question 43

where in the spinal cord are the cell bodies of preganglionic neurons concentrated

Answer 43

lateral horn

Question 44

nerve plexus gives rise to the sciatic nerve

Answer 44

sacral

Question 45

regions of the brain that is part of the brain stem

Answer 45

medulla oblongata pons midbrain

Question 46

name or number of cranial nerve that has opthalmic maxillary and mandibular branches

Answer 46

trigeminal V

Question 47

which region of the brain adjusts postural muscles and helps to fine tune voluntary and involuntary movements

Answer 47

cerebellum

Question 48

term is used to describe a collection of neuronal cell bodies in the central nervous system

Answer 48

nucleus

Question 49

tracts convey signals that provide voluntary control of skeletal muscles

Answer 49

corticospinal tracts

Question 50

cranial nerve gives rise to 90% of the preganglionic fibers in the parasympathetic nervous system

Answer 50

vagus x

Question 51

what layer of the spinal meninges is firmly bound to the spinal cord and provides the spinal cords blood supply

Answer 51

pia mater

Question 52

sensory cortex associated with the temporal lobe of the cerebrum

Answer 52

olfactory auditory

Question 53

in most sensory tracts, which neurons convey info from the thalamus to the primary somatosensory cortex

Answer 53

third order neuron

Question 54

cranial nerve that is a motor nerve

Answer 54

oculomotor III trochlear IV abducens VI accessory XI hypoglossal XII

Question 55

name given to the collection of spinal nerve roots inferior to the conus medullaris of the spinal cord

Answer 55

cauda equina