ch 8-exam study guide Flashcards Preview

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Flashcards in ch 8-exam study guide Deck (34):
1

the brain and spina cord comprise the
the

central nervous system(cns)

2

the part of the peripheral nervous system that brings info to the central nervous system is the

afferent division

3

all of the nervous tissue outside of the central nervous system comprises the ___ nervous system

peripheral

4

the ___ nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity

autonomic

5

the branching structures that, together with the cell body, are sensitive to chemical, mechanical, or electrical stimulation are called

dendrites

6

the neurilemma of axons in the peripheral nervous system is the outer layer of

Schwann cells

7

neurons that have 2 or more dendrites and a singe axon extending away from the soma are called

multipolar

8

most neurons ack centrioles. this observation explains

why such neurons cannot divide through mitosis

9

the resting potential of a neuron is

-70 mV

10

opening of voltage-gated sodium channels in the membrane of a neuron results in

depolarization

11

when a neuron is at rest, which ion passes through its membrane most easily

potassium

12

which ion is needed to trigger the release of acetylcholine, via exocytosis, into the synaptic cleft

calcium

13

which of the following neurotransmitters usually depolarizes postsynaptic neurons
a. serotonin
b. dopamine
c. GABA
d. acetylcholine
e. monoamine oxidase

d

14

the ___ is the layer of the meninges that is in direct contact with the surface of the brain

pia mater

15

the gray matter of the spinal cord is dominated by

cell bodies of neurons and glial cells

16

if the dorsal root of a spinal nerve is severed,

incoming sensory info would be disrupted

17

the visual cortex is located in the

occipital lobe

18

the two cerebral hemispheres are separated by the

longitudinal fissure

19

the area anterior to the central sulcus is the

frontal lobe

20

the cortex inferior to the lateral sulcus is the

temporal lobe

21

the primary connection between cerebral hemispheres is the

corpus callosum

22

which structure contains cardiovascular and respiratory rhythmicity centers

medulla oblongata

23

the ____ acts as a switching and relay center for integration of conscious and unconscious sensory info and motor commands

diencephalon

24

which structure secretes melatonin

pineal gland

25

the primary motor cortex of the cerebrum is located in the ___

pre-central gyrus

26

the visual cortex of the cerebrum is located in the

occipital lobe

27

the thalamus is the largest portion of which major brain region

diencephalon

28

major centers concerned with autonomic function, such as heart rate, blood pressure, and respiration is the

medulla oblongata

29

the region of the brain that is involved in conscious thought and intellectual function as well as processing somatic sensory and motor info is the

cerebrum

30

the surface of the postcentral gyrus contains the

primary sensory cortex

31

if Broca's area is damaged, what might result

loss of the ability to speak

32

another name for the patellar reflex is the

knee-jerk reflex

33

list the parts of a reflex arc in the correct order

receptor, sensory neuron, interneuron, motor neuron, effector

34

which of the following is a function of the efferent division of the nervous system
a. providing sensation of the internal and external environments
b. integrating sensory info
c. coordinating voluntary and involuntary activities
d. sending signals to muscles
e. regulating or controlling peripheral structures and systems

d