lecture 5

Question 1

beta adrenergic blockers

Answer 1

decrease heart rate but also cause bronchoconstriction

Question 2

The highly branched projections of the neuron are called axons.

Answer 2

false

Question 3

Which of the following statements is not true of the spinal cord?

Answer 3

It extends form the occipital bone to the third sacral vertebra

Question 4

An anticholinergic or antimuscarinic effect

Answer 4

is characterised by an increased heart rate and urinary retention.

Question 5

a patient has suffered an injury to the right cerebral hemisphere and has left-sided paralysis. which word best explains this

Answer 5

decussation

Question 6

Sympathetic nerve stimulation causes relaxation of the breathing passages (bronchodilation). Which of the following drug classifications achieves this effect?

Answer 6

Beta2-adrenergic agonist

Question 7

vasomotor tone is

Answer 7

a vasoconstrictor effect caused by background firing of the sympathetic nerves

Question 8

parkinson disease can be considered a neurotransmitter deficiency disease

Answer 8

true

Question 9

The knee-jerk reflex goes from receptor neuron to interneuron to effector neuron.

Answer 9

false

Question 10

This structure is not part of a synapse.

Answer 10

Neurotransmitter

Question 11

which of the following is most related to the feed-and-breed system

Answer 11

craniosacral outflow

Question 12

The dendrite of a motor neuron receives impulses from an interneuron.

Answer 12

true

Question 13

The autonomic nervous system consists of two branches: the sympathetic nervous system and the parasympathetic nervous system.

Answer 13

true

Question 14

A beta1-adrenergic agonist

Answer 14

increases heart rate

Question 15

Ridges on the surface of the cerebrum are called sulci.

Answer 15

false

Question 16

which of the following is not an effector organ for the autonomic nerves

Answer 16

Skeletal muscle

Question 17

The vital centers are located in the

Answer 17

Medulla oblongata

Question 18

Axons

Answer 18

Carry nerve impulses away from the cell body

Question 19

the axon of a sensory neuron usually transmits an impulse to an interneuron

Answer 19

true

Question 20

alpha and beta receptors are

Answer 20

activated by nore

Question 21

least related to sympathetic nervous system

Answer 21

vagomimetic effect

Question 22

atropine is classified as a muscarinic antagonist & blocker, therefore

Answer 22

vagolytic

Question 23

Another name for connecting neurons is

Answer 23

interneurons

Question 24

Parkinson disease is a nervous disorder resulting from a deficiency of which neurotransmitter?

Answer 24

dopamine

Question 25

This neurotransmitter is not considered a catecholamine

Answer 25

Acetylcholine

Question 26

A preoperative patient received an antimuscarinic drug (atropine). Which drug-related postoperative consequence is this patient likely to experience?

Answer 26

Difficult urination

Question 27

Nerves are composed mostly of dendrites.

Answer 27

false

Question 28

The outermost layer of the meninges is the

Answer 28

dura mater

Question 29

An adrenergic fibre is one that

Answer 29

secretes norepinephrine as its transmitter

Question 30

Motor neurons are also called

Answer 30

efferent neurons

Question 31

Most descriptive of dual innervation of the autonomic nervous system

Answer 31

sympathetic and parasympathetic

Question 32

a reflex arc may not have what

Answer 32

an interneuron

Question 33

increased heart rate, increased blood pressure, bronchodilation, diaphoresis, and pupillary dialation (mydriasis) are consequences of

Answer 33

activation of the adrenergic receptors

Question 34

a drug that causes the heart to beat stronger and faster is called

Answer 34

sympathomimetric

Question 35

what is most characteristic of the parasympathetic nervous system

Answer 35

feef-and-breed-system

Question 36

The somatic nervous system carries impulses from the brain and spinal cord to

Answer 36

skeletal muscles

Question 37

sympathetic and parasympathetic nerves

Answer 37

innervate the viscera

Question 38

what is not true of the cerebellum

Answer 38

it helps regulate water balance and sleep cycles

Question 39

Sensory neurons are also called

Answer 39

afferent neurons

Question 40

dendrites

Answer 40

are usually high branched

Question 41

the autonomic nervous system is a subdivision of the ___ nervous system

Answer 41

peripheral

Question 42

which neurotransmitter is secreted by a cholinergic fiber

Answer 42

acetylcholine

Question 43

A patient has vagally induced bradycardia ( slow heart rate). How would this be relieved

Answer 43

muscarinic antagonist

Question 44

the outer membrane of. Schwann cell is called the

Answer 44

neurolemma

Question 45

Muscarinic receptors

Answer 45

activated by ACh

Question 46

what is not a function of the hypothalamus

Answer 46

plays a part of in the so-called arousal or alerting mechanism

Question 47

the effects of adrenal medullary secretion most resemble

Answer 47

sympathetic nerve discharge

Question 48

saltatory conduction

Answer 48

occurs only in the axons

Question 49

what type of glia cell produces myelin for cells in the brain

Answer 49

oligodendrocytes

Question 50

a nerve is

Answer 50

a group of peripheral axons

Question 51

the dura matter is deep to both the arachnoid mater and the pia mater

Answer 51

false

Question 52

dopamine and levodopa are equally effective in treating parkinson disease because they are both able to enter the brain

Answer 52

false