Anatomy Exam Test 3

Front 1

which of the following correctly describes the series of events in an action potential

Back 1

thershold, depolarization repolarization

Front 2

the peripheral nervous sysytem

Back 2

may be dived into somatic and autonomic nervous systems

Front 3

during the absolute refactory period

Back 3

an action potential will not occur

Front 4

which neuroglia cells produce myelin

Back 4

oligodendrocytes, schwann cells
(a and b are correct)

Front 5

consists of neuron cell bodies, neuroglia and unmyelinated nerve fibers

Back 5

gray matter

Front 6

which of the following contributes to the maintenance of resting membrane potential

Back 6

presence of higher concentration of na+ outside the cell, presence of higher concentration of k+ inside the cell ( a and b are correct0

Front 7

are often most observed in dendrites and cell bodies

Back 7

graded potentials

Front 8

allow an impulse to travel the distans of the axon

Back 8

action potentials

Front 9

which axon would conduct umpulses the fastest

Back 9

a myelinated axon with a large diameter

Front 10

place the events involved generating an action potential in order in whcih they accur

Back 10

na+ enters the cell, membrane depolarizes, k+moves out of the cell, membrane repolarizes

Front 11

whic of the following ions is responsible for hte depolarization phase of the action potential

Back 11

na+

Front 12

which of the following myelinates axons in the cns similar to the schwann cell in yhe pns

Back 12

oligodendricyte

Front 13

place the meninges and associated spaces in order from the most superficial to deepest

Back 13

dura mater, arachnoid mater, subarachnoid space, pia mater

Front 14

the patellar reflex

Back 14

is a monosynatpic reflex, occurs in response to the streching of a muscle ( a and b are correct)

Front 15

phagocytic glial cells foun in cns

Back 15

microglia

Front 16

found lining ventricles of brain; make csf

Back 16

ependymal cell

Front 17

foun only in peripheral nervous system; support neuron cell bodies in ganglia

Back 17

sateillite cell

Front 18

each of the following is a lobe of the cerebrum of the brain except the

Back 18

hypothalmus

Front 19

cerebrosinal fluid

Back 19

provides nourishment to the brain, provides some mechanical protection for hte brain. r(a and b are correct)

Front 20

the brain stem includes all of the following except the

Back 20

diecephalon

Front 21

is the site decussation (cross over) of the pyramids, is involved in the regulation of the heart rate and blood pressure, sets the basic rhythem of respiration

Back 21

medulla oblongata
( all of the above are correct)

Front 22

the cerebellum is responsible for which of the follwoing

Back 22

coordinate os muscle movemtens

Front 23

the thalmus does all of the following except

Back 23

helps regulate autonomic activities

Front 24

controls and integrates autonomic nervous system activity

Back 24

hypothalmus

Front 25

is the thinking part of the brain

Back 25

cerebrum

Front 26

its sensory input comes primarily from visceral organs, most of its motor pathways include two neurons that synapse at a ganglion.

Back 26

true of the autonomic nervous system
(a and b are correct )

Front 27

whic of the following is not example of an autonomic response

Back 27

tapping your friends shoulder to get her attention

Front 28

preganglionic sympathetic neurons, preganglionic and postganglionic parasympathetic neurons, most postganglionic sympathetic neurons associated with sweat glands

Back 28

cholinergic neurons
( a b and c )

Front 29

whchi of the following will not usually activate a sympathetic response

Back 29

eliminating waste

Front 30

which of the follwoing is not increase by parasympathteic activation

Back 30

increase heart rate

Front 31

the ____ nervous system regulates involuntary actions such as smooth muscle contraction in the organs

Back 31

autonomic

Front 32

increased stimulation by the ___ division of the autonomic system generally increases heart rate

Back 32

adrenergic

Front 33

the ___ division of the autonomic nervous system is also called the craniosacral division and the cell bodies of its neurons are located in the brain stem and sacral spinal cord

Back 33

cholinergic

Front 34

___ neurons release acetycholine; they are found in the somatic and sutonomic nervous systems

Back 34

parasympathetic

Front 35

sympathteic activation causes a set of responses designed to protect the body from a real or perceived threat. Collectively, these responses are called the ___ response

Back 35

fight or flight

Front 36

parasympathetic activation allows the body to process ingested food and store energy. the parasympathetic response is sometimes called the ____ response

Back 36

rest or digest

Front 37

the ___ nervous system regulates voluntary actions such as skeletal muscle contraction

Back 37

somatic

Front 38

___ neurons release norepinephrine; they are found in the autonomic nervous system.

Back 38

sympathetic

Front 39

a __is shallow groove in the cerebral cortex

Back 39

sulcus

Front 40

the ___ is a collection of structures that are collectively called the emotional brain.

Back 40

limbic system

Front 41

the __ is a collection of structures that activate the cerebral cortex into a state of wakefulness

Back 41

reticular formation

Front 42

the __ is a reflex center for integrating sensory information concering positon of body parts and for coordinating complex skeletal muscle movements

Back 42

cerebellum

Front 43

the __ of the brain that contains the cardiac center, vasomotor and respiratory centers.

Back 43

medulla oblongata

Front 44

the __ are connective tissue coverings that enclose the spinal cord and brain

Back 44

meninges

Front 45

the ____ is the tough, superficial outer meninge

Back 45

dura mater

Front 46

because they vcontain both motor and sensory fibers, spinal nerves are called ____ nerves

Back 46

mixed

Front 47

a rapid, automatic predictable sequece of actions occuring in response to a specific stimulus is a

Back 47

action potential