ch14pt1

Question 1

brain contains about ___ percent of body’s neural tissue

Answer 1

97

Question 2

regions of brain (3)

Answer 2

cerebrum, cerebellum, brain stem

Question 3

(diencephalon), midbrain, pons, medulla oblongata

Answer 3

parts of brain stem

Question 4

Largest part of brain, interprets sensory info and controls higher mental functions.

Answer 4

cerebrum

Question 5

Divides cerebrum into left and right cerebral hemispheres

Answer 5

longitudinal fissure

Question 6

Surface layer of gray matter (on cerebrum)

Answer 6

neural cortex

Question 7

Folded surface increases surface area,
Elevated ridges (gyri),
Shallow depressions (sulci),
Deep grooves (fissures)

Answer 7

Features of neural cortex (cerebral cortex)

Question 8

Second largest part of brain, under cerebrum. Divided into Left and Right cerebellar hemispheres.

Answer 8

Cerebellum

Question 9

unpaired, median portion of the cerebellum that connects the two cerebellar hemispheres

Answer 9

vermis

Question 10

Coordination of movement, evaluating certain sensory input, time keeping

Answer 10

functions of cerebellum

Question 11

gray matter covering cerebellum

Answer 11

cerebellar cortex

Question 12

Relays information and basic life sustaining functions between spinal cord and cerebrum or cerebellum

Answer 12

brain stem

Question 13

parts of brain stem (4)

Answer 13

(diencephalon), midbrain, pons, medulla oblongata

Question 14

major parts of diencephalon (2)

Answer 14

thalamus and hypothalamus

Question 15

relay and processing centers for sensory information (brain stem)

Answer 15

thalamus

Question 16

center for controlling emotions, autonomic functions, and hormone production (brain stem)

Answer 16

hypothalamus

Question 17

processes visual and auditory data, generates reflexive somatic motor responses, maintenance of consciousness (brain stem)

Answer 17

midbrain

Question 18

relays sensory info to cerebellum and thalamus, subconscious somatic and visceral motor centers (brain stem)

Answer 18

pons

Question 19

relays sensory info to thalamus and to other portions of the brain stem, autonomic centers for regulations of visceral functions (brain stem)

Answer 19

medulla oblongata

Question 20

delicate mass of neural tissue,
grey matter and white matter,
internal passageways and chambers filled with cerebrospinal fluid

Answer 20

the brain

Question 21

________ from the medulla oblongata to the cerebrum, brain functions become ____ _____ and variable

Answer 21

Ascending, more complex

Question 22

Basic life sustaining functions (HR, BP, Respirations, Digestion) are controlled from the _________

Answer 22

brainstem

Question 23

Conscious thought and intelligence are produced in the neural _____ of the ______ hemispheres

Answer 23

cortex, cerebral

Question 24

Bones of the cranium, cranial meninges, and cerebrospinal fluid are _____ _____ of the brain

Answer 24

physical protection

Question 25

_______ isolation include the blood–brain barrier.

Answer 25

Biochemical

Question 26

Connective tissue layers surrounding the brain. Protect the brain from cranial trauma and are continuous with spinal meninges.

Answer 26

cranial meninges

Question 27

layers of cranial meninges (3)

Answer 27

dura mater, arachnoid mater, pia mater

Question 28

Outer fibrous meningeal layer fused to periosteum

Answer 28

periosteal layer of dura mater

Question 29

unlike spinal cord, there is no ______ _____ above dura mater

Answer 29

epidural space

Question 30

Inner fibrous layer, space beneath is subdural space

Answer 30

meningeal layer of dura mater

Question 31

Space between two layers of dura mater,
Drain blood from brain

Answer 31

dural venous sinus

Question 32

middle layer of cranial meninges, smooth membrane covering surface of the brain (does not dip into crevices)

Answer 32

arachnoid mater

Question 33

space between arachnoid mater and pia mater

Answer 33

subarachnoid space

Question 34

meningeal layer on brain surface, only layer entering sulci

Answer 34

pia mater

Question 35

Folded inner layer of dura mater, extend into fissures, stabilize and support brain.

Answer 35

Dural folds

Question 36

large dural fold between cerebral hemispheres

Answer 36

falx cerebri

Question 37

large dural fold seperates cerebellum and cerebrum

Answer 37

tentorium cerebelli

Question 38

large dural fold divides cerebellar hemispheres below tentorium cerebelli

Answer 38

falx cerebelli

Question 39

Circulates around and bathes all exposed surfaces of CNS. Interchanges with interstitial fluid of brain.

Answer 39

Cerebrospinal Fluid (CSF)

Question 40

Water, wastes, ions, some WBC, glucose, little protein

Answer 40

composition of CSF

Question 41

Cushions delicate neural structures.
Gives the brain buoyancy. Transports nutrients, chemical messengers, and waste products.

Answer 41

Functions of CSF

Question 42

Plasma is filtered out of _______ in the brain and across the ______.

Answer 42

capillaries, ependyma

Question 43

_______ cells adjust the composition of the fluid, secreting CSF into _________.

Answer 43

Ependymal, ventricles

Question 44

CSF flows through ventricles and out through the _______. CSF bathes ______ surface of brain.

Answer 44

apertures, external

Question 45

CSF is reabsorbed through _______ _______ into venous sinuses

Answer 45

arachnoid granulations

Question 46

we produce about _____ ml of CSF per day

Answer 46

500