brain

Question 1

brain is part of what

Answer 1

CNS and cranial cavity

Question 2

development of brain
week 4

Answer 2

the brain develops from the rostral part of the nueral tube
-3 constrictions appear:
-forebrain
-midbrain
-hindbrain

Question 3

development of brain
week 5

Answer 3

the primary vesicles give rise to 5 secondary vesciles
-brain develops into two major bends: midbrain and cervical

Question 4

week 5
what are the 5 secondary vesicles

Answer 4

-telencephalon: cerebral hemispheres and cerebru,
-diencephalon: thalamus, hypothalamus, epithalamus
-mesencephalon: mid brain
-melencephalon: medulla oblongata
-central cavity enlarges in specific regions and forms hollow ventricles

Question 5

what are the basic parts of the brain

Answer 5

brain stem
cerebellum
diencephalon
cerebrun
gray and white matter

Question 6

gray matter

Answer 6

inner region

Question 7

white matter

Answer 7

hollow ventricles

Question 8

cortex

Answer 8

additional gray matter regions extending in the cerebrum and cerebellum

Question 9

brain nuclei

Answer 9

all the other gray matter in the form of irregularly shapes clusters of neuron cell bodies

Question 10

ventricles

Answer 10

hollow; expansions of the central cavity and are continuous with one another
-filled with CSF and is the site for CSF production

Question 11

what are the types of ventricles

Answer 11

(2) lateral ventricles
(1) third ventricle
(1) fourth ventricle

Question 12

lateral ventricles

Answer 12

surrounded by the cerebral cortex

Question 13

third ventricle

Answer 13

within the diencephalon and connects to each lateral ventricle

Question 14

fourth ventricle

Answer 14

within the brain step, dorsal to the pons

Question 15

cerebral aqueduct

Answer 15

passes through the midbrain and connects the 3rd and 4th ventricles

Question 16

brain stem function

Answer 16

most primitive and caudal part of the brain
-function:
-passageway for nerve connections fiber tracks between the cerebrum and the spinal cord.
-involved in face and neck innervation
-10-12 spinal nerves connect
-highly programmed behaviors ensure survival

Question 17

medulla oblongata
pons
midbrain

Answer 17

brain stem

Question 18

medulla oblongata

Answer 18

regulates the cardiac center, vasomotor center, blood pressure, respiratory center, hiccuping, swallowing, coughing, sneezing

Question 19

caudal portion of medulla oblongata

Answer 19

has decussation pyramids
-voluntary motor fibers that cross and control voluntary movements on the opposite side of the body

Question 20

midbrain has the

Answer 20

corpora quadrigemina
-forms 4 bumps on the dorsal surface of the midbrain
-superior (visual reflexes)
-inferior colliculi (sound reflexes)

Question 21

cerebellum

Answer 21

2nd largest part of the brain
functions: body movements, posture, equilibrium, retention of motor skills, motor memory, cogntion

Question 22

the cerebellum has

Answer 22

a vermis, folia, and fissures

Question 23

vermis

Answer 23

2 hemispheres connected medially by a wormlike vermis

Question 24

folia

Answer 24

surface folded into ridges

Question 25

fissures

Answer 25

deep grooves

Question 26

damage to the cerebellum causes

Answer 26

slow jerky movements and will only affect one side of the body

Question 27

what are the regions of the diencephalon

Answer 27

thalamus hypothalamus epithalamus

Question 28

thalamus

Answer 28

sensory nuclei for conscious senses, gateway to cerebrum

Question 29

hypothalamus

Answer 29

visceral control center, regulates ANS, emotions, hunger, memory

Question 30

epithalamus

Answer 30

houses pineal gland: melatonin

Question 31

cerebrum

Answer 31

largest part of brain split into two hemispheres

Question 32

cerebrum transverse cerebral fissure

Answer 32

separates the cerebrum from the cerebellum inferioirly

Question 33

cerebrum longitudinal fissure

Answer 33

separates right and left hemispheres

Question 34

cerebrum sulci

Answer 34

shallow grooves

Question 35

cerebrum gyri

Answer 35

twisted ridges between sulci

Question 36

cerebrum divides into 5 lobes per hemisphere

Answer 36

frontal: anterior cranial fossa parietal occipital temporal: middle cranial fossa insula: covered by frontal, parietal and temporal lobes

Question 37

cerebral cortex

Answer 37

function: controls the conscious mind, communication , understanding, voluntary -made of gray matter

Question 38

what are the regions of the cerebral cortex

Answer 38

sensory areas: conscious awareness of sensation association: interpret info to allow motor action motor areas: control voluntary motor functions

Question 39

cerebral white matter

Answer 39

deep to gray, consists of fibers, many are myelinated and bundled

Question 40

corpus collosum

Answer 40

links right and left cerebral hemi