Brain

Question 1

What are the major parts of the brain?

Answer 1

Cerebrum, Cerebellum, Brainstem

Question 2

Brain weighs?

Answer 2

3 - 3.5 pounds

Question 3

the Cerebrum is ___% of the brain volume?

Answer 3

83%

Question 4

cerebellum contains ___% of the neurons?

Answer 4

50%

Question 5

what is the Rostral? Caudal?

Answer 5

Rostral = towards forehead Caudal = tail, or towards the back

Question 6

Longitudinal fissure?

Answer 6

separates two cerebral hemispheres

Question 7

Cerebral cortex?

Answer 7

“brain bark” 3mm layer of gray matter with extensive folds to increase surface area

Question 8

what are gyri and sulci/fissures?

Answer 8

Gyri = ridges Sulci/Fissures = depressions

Question 9

gray matter contains?

Answer 9

neural cell bodies

Question 10

white matter contains?

Answer 10

myelinated axons

Question 11

Anatomy of the brain (pic)

Answer 11

Question 12

Gray matter are the?

White matter are the?

Answer 12

gray = compters

white= cables

Question 13

Membranes that envelope the CNS?

Answer 13

Dura mater: dense conective tissue, periosteal layer, meningeal layer

Arachnoid layer: thin membrane, contains CSF in subarachnoid space

Pia mater: in direct contact with the brain, saran wrap

Question 14

Cranial Meninges

Answer 14

Question 15

How many ventricles of the brain are they and what is thier main purpose?

Answer 15

4, produce cerebral spinal fluid

Question 16

Ventrilce (pic)

Answer 16

Question 17

how much CSF is produced by the brain a day?

Answer 17

500 mL

Question 18

flow of spinal fluid?

Answer 18

Question 19

Forebrain (pic)

Answer 19

Question 20

Cerebrum lobes and there purpose?

Answer 20

Frontal: voluntary, planning, mood, social judgment

Parietal: sensory reception and integration of sensory information

Occipital: visual

Temporal: hearing, smell, learning, memory, emotional behaivor, taste

Question 21

the frontal lobe has a _____ thought function?

Answer 21

Higher

Question 22

The transverse sulcus separates?

Answer 22

occipital lobe and cerebellum

Question 23

left brain VS. right brain

Answer 23

Left: language and reasoning

Right: artistic

Question 24

the corpus callosum does what?

Answer 24

connects the two hemispheres

Question 25

Thalamus does?

Answer 25

recieves nearly all sensory information on its way to the cerebral cortex

Question 26

hypothalamus does?

Answer 26

hormone secretion and pituitary gland thermoregulation food and water intake sleep/memory

Question 27

epithalamus?

Answer 27

pineal gland: third eye?

Question 28

the pons does what?

Answer 28

- relays signals from cerebrum to cerebellum - aids with sleep, hearing, taste, eye and facial movements, bladder control, swollowing and respiration

Question 29

hindbrain is and does what?

Answer 29

cerebellum: folia or gyri, muscular coordination, 10% of brain volume and 50% of neurons right and left hemispheres are connected by thevermis

Question 30

brain overview?

Answer 30

Frontal Lobe - higher thought function Temporal Lobe – sensation perception Occipital Lobe - vision Parietal Lobe – s0matosensory Cerebellum – primary motor cortex Superior / Inferior Colliculus – visual reflexes Thalamus – sensory integration Pituitary – hormone secreation / growth Pineal – circadian rhythms Medulla Oblongata – autonomic functioning / heart

Question 31

how many cranial nerves are there?

Answer 31

12

Question 32

Cranial nerve locations (pic)

Answer 32

Question 33

Cranial Nerves Mnemonic?

Answer 33

On - olfactory Occasion – optic Our – oculomotor Trusty - trochlear Truck - trigeminal Acts - abducens Funny - Facial Very - Vestibulocochlear Good - glossopharyngeal Vehicle - vagus Any - accessory How - hypoglossal

Question 34

Cranial nerves and thier uses?

Answer 34

Olifactory: sensory information from nose Optic Nerve: Visual sensory information Oculomotor nerve: moves the eye, superior orbital fissure Trochlear nerve: eye movement, oblique muscle Trigeminal nerve: sensory nerve to the face, touch, pain, temperature Abducens nerve: eye movement, lateralrectus muscle Facial nerve: facial exressions, 2/3 taste, salivary glands, tear ducts, nasal and palatine glands Vestibulocochlearnerve: hearing and balance Glossopharyngeal nerve: swallowing, gagging, 1/3 tounge, control of BP Vagus nerve: speech, parasympathetic, pretty much everything else Accessory nerve: swalloing, head, neck, shoulder movement Hypoglossal nerve: speech, food, swallowing