Neural Tissue Final Bio201

Front 1

The central nervous system consists of the

Back 1

Brain and Spinal Cord

Front 2

What is the implication of a mature neuron having no centrioles?

Back 2

The cell would not be able to divide.

Front 3

Multipolar neurons have

Back 3

one axon and several dendrites

Front 4

The axon emerges from the soma at a thickened region called the

Back 4

Axon Hillock

Front 5

Which of the following does not describe a synapse?

Back 5

The point where neurotransmitters are assembled

Front 6

The movement of materials from the soma to the synaptic knob is called the

Back 6

axoplasmic transport

Front 7

the movement of substances from the synaptic knob to the soma is called

Back 7

retrograde flow

Front 8

Motor neurons form the __________ division of the _______.

Back 8

efferent, PNS

Front 9

What type of sensory neurons would Amt, a gymnast, use to inform her brain of the position of her skeletal muscles and joints?

Back 9

proprioceptors

Front 10

which of the following are not CNS glial cells?

Back 10

Schwann Cells

Front 11

The ventricles of the brain and the central canal of the spinal cord are filled with

Back 11

Cerebrospinal fluid

Front 12

Among the many functions of the astrocytes are

Back 12

all of the above

Front 13

the transmembrane potential found in all living cells is maintained by

Back 13

the sodium potassium pump

Front 14

the resting potential of a typical neuron is about

Back 14

-70mV

Front 15

there are two major categories of ion channels: leak channels and

Back 15

active channels

Front 16

Gated channels may be

Back 16

all of the above

Front 17

graded potentials

Back 17

are found in many types of cells

Front 18

A stimulus causes a neuron's membrane potential to rise to -60mV. Which of the following is not going to occur?

Back 18

inhibition of action potential because of hyperpolarization.

Front 19

the refractory period occurs

Back 19

from the time an action potential begins until the normal resting potential has stablized.

Front 20

Saltatory Transmission

Back 20

all of the above

Front 21

The speed at which an action potential is transmitted depends on

Back 21

the myelination and diameter of the axon.

Front 22

Campared with type C fibers, type A fibers have a larger diameter and can increase propogation __________ times faster.

Back 22

120

Front 23

which of the following is not a neurotransmitter?

Back 23

testosterone

Front 24

which of the following statements about facilitation is false?

Back 24

All of the above

Front 25

presynaptic facilition

Back 25

is activity at an axoaxonal synapse that increases the amount of neurotransmitter released when an action potential arrives at the synaptic knob.

Front 26

The adult spinal cord is _____ long.

Back 26

45cm (18 inches)

Front 27

regions of the spinal cord are expanded to accomodate sensory and motor information associated with the limbs. These expanded areas are called

Back 27

cervical and lumbar enlargements.

Front 28

which of the following statements about spinal nerves is false?

Back 28

the spinal cord itself extends the length of the entire vertebral column.

Front 29

the filum terminale and spinal nerves in the lumbar and sacral regions are called the

Back 29

cauda equina

Front 30

the mebranes surrounding and protecting the brain and spinal cord are the

Back 30

meninges

Front 31

the space between the arachnoid and pia mater is filled with

Back 31

cerebrospinal fluid

Front 32

an epidural block

Back 32

can be given to control pain during labor.

Front 33

gray matter in the spinal cord is divided into

Back 33

horns

Front 34

In the spinal cord, gray matter is organized into

Back 34

visceral and somatic sensory and motor nuclei

Front 35

The dorsal root ganglion contains the _______ of _______ neurons.

Back 35

cell bodies, sensory

Front 36

dermatomes

Back 36

all of the above

Front 37

There are ________ major plexuses of the spinal nerves.

Back 37

four

Front 38

The most impiortant branch of the cervical plexus is the ______ nerve, which innervates the diaphragm.

Back 38

Phrenic

Front 39

The branches of the ansa cervicalis innervate the

Back 39

laryngeal muscles

Front 40

The median nerve of the brachial plexus innervates the

Back 40

flexor muscle of the forearm

Front 41

Susan is doing hip extension movements during an exercise class; which plexus and which nerve is she using to contract the gluteus maximum muscle?

Back 41

sacral plexus and inferior gluteal nerve

Front 42

The first step in the activation of a reflex arc is the

Back 42

activation of a receptor

Front 43

The last step in the activation of a reflex arc is the

Back 43

response of an effector muscle

Front 44

monosynaptic reflexes

Back 44

all of the above

Front 45

Jon is learning to drive, and although at first he was slow to step on the brakes when trouble appeared, he now does it automatically. What kind of reflex has Jon developed?

Back 45

Acquired

Front 46

Acquired reflexes are

Back 46

learned responses.

Front 47

Accidentally touching a hot burner on the stove elicits a

Back 47

flexor reflex.

Front 48

The reflexes that prevent you from falling when you slip in a puddle of water in your kitchen are the ______ reflexes.

Back 48

all of the above

Front 49

The reflex that complements a withdrawal reflex, making compensatory adjustments of the side of the body opposite that which receives the stimulus, is the _______ reflex.

Back 49

crossed extensor

Front 50

Which of the following is not true of the tendon reflex?

Back 50

It prevents opposing tendon force through reciprocal inhibition.

Front 51

The cerebrum develops from which portion of the embryonic brain?

Back 51

telencephalon

Front 52

The most posterior part of the brain, which integrates into the spinal cord, is the

Back 52

medulla oblangata

Front 53

Which of the following brain components is not considered part of the brain stem?

Back 53

hypothalumus

Front 54

which of the following statements about cerebrospinal fluid is false?

Back 54

It is absorbed in arterial circulation at arachnoid granulations.

Front 55

The third and fourth ventricle are connected by the

Back 55

all of the above

Front 56

The inner meninx adhering to the tissues of the brain is the

Back 56

Pia mater

Front 57

The falx cerebri and tentorium cerebelli are

Back 57

dural folds

Front 58

cerebrospinal fluid circulates through the

Back 58

all of the above

Front 59

The major arteries supplying the brain are the

Back 59

internal carotids and vertebrals.

Front 60

Elevated ridges on the surface of the brain are called

Back 60

Gyri

Front 61

The two cerebral hemispheres are connected by a broad band of white matter called the

Back 61

corpus callosum

Front 62

The right cerebral hemisphere receives sensory input from and controls movement of the ___________ side of the body.

Back 62

Left

Front 63

Projection fibers link the ________ cortex with the _________.

Back 63

cerebral, brain stem and other centers.

Front 64

The postcentral gyrus contains association cells of the

Back 64

primary sensory center.

Front 65

the visual association area is located in the

Back 65

occipital lobe.

Front 66

the general interpretive area is

Back 66

all of the above.

Front 67

Broca's area is

Back 67

also called the motor speech area.

Front 68

Jennifer tries to dress in the dark so as not to disturb her roommate, Joann. Jennifer feels the clothes in her closet until she recognizes her favorite silk blouse. Which part of the brain allowed Jennifer to recognize her blouse by using her sense of touch?

Back 68

Right cerebral hemisphere.

Front 69

A disorder affecting the ability, called the __________, results from damage to the __________ area of the brain.

Back 69

aphasia, general interpretive

Front 70

Which of the following could have resulted from stimulating the lymbic system of a patient undergoing brain surgery?

Back 70

The patient became agitated and angry.

Front 71

Which of the following is not a function of the hypothalamus?

Back 71

Adjusting postural muscles

Front 72

The corpora quadrigemina are part of the

Back 72

mesencephalon.

Front 73

Damage to the cerebellum could be diagnosed by observing

Back 73

ataxia, or a loss of balance.

Front 74

The tenth cranial nerve is the

Back 74

vagus nerve.

Front 75

Which of the following cranial nerves are not somatic?

Back 75

Direct light reflex