Quiz 3

Question 1

Neuroanatomy

Answer 1

anatomy of nervous sys

Question 2

ventral

Answer 2

toward stomach

Question 3

dorsal

Answer 3

toward back

Question 4

lateral

Answer 4

toward side

Question 5

medial

Answer 5

toward midline

Question 6

central nervous sys (CNS)

Answer 6

brain and spinal cord

Question 7

peripheral nervous sys (PNS)

Answer 7

all other parts outside of brain and spinal cord
consists of nerves
somatic and autonomic

Question 8

motor nerves

Answer 8

transmit info from the spinal cord and brain to muscles and glands

Question 9

sensory nerves

Answer 9

convey info from body to CNS

Question 10

somatic

Answer 10

nerves that convey messages from sense organs to the CNS and from the CNS to the muscles and glands
- has cranial and spinal nerves

Question 11

cranial nerves

Answer 11

innervate the head, neck, and visceral organs directly from brain
- 12 pairs control much of motor and sensory functions of head and neck

Question 12

spinal nerves

Answer 12

connect to spinal cord

• 31 pairs, each consists of a group of motor fibers that project from spinal cord and a group of sensory fibers that enter spinal cord
  1. cervical
  2. thoracic
  3. lumbar
  4. sacral
  5. coccygeal

Question 13

cervical

Answer 13

neck

8 segments

Question 14

thoracic

Answer 14

trunk

12 segments

Question 15

lumbar

Answer 15

lower back

5 segments

Question 16

sacral

Answer 16

pelvic

5 segments

Question 17

coccygeal

Answer 17

bottom

1 segment

Question 18

autonomic

Answer 18

set of neurons that control heart, intestines, and other internal organs

• sympathetic
• parasympathetic

Question 19

sympathetic

Answer 19

arousal, “fight or flight”, emergency

Question 20

parasympathetic

Answer 20

“relax and digest”, nonemergency

Question 21

Bell Magendie Law (for spinal cord)

Answer 21

• the entering dorsal roots carry sensory info to the brain and
• the existing ventral roots carry motor info to the muscles and glands

Question 22

The brain

Answer 22

has 2 cerebral hemispheres

- neurons from each hemisphere communicate through corpus callosum

Question 23

cerebral cortex

Answer 23

outermost, convoluted layer of brain

• has gyri and sulci
• grey matter and white matter

Question 24

gyri

Answer 24

ridged or raised portions of brain

Question 25

sulci

Answer 25

furrows or indents of brain

Question 26

grey matter

Answer 26

outer surface of cerebral hemispheres

Question 27

white matter

Answer 27

formed by axons extending inward from cortex

Question 28

corpus callosum

Answer 28

bundle of axons that connects the 2 cerebral hemispheres | - how neurons from each hemisphere communicate with eachother

Question 29

why is the cortex wrinkled

Answer 29

to increase surface area

Question 30

4 lobes of each hemisphere

Answer 30

1. frontal 2. parietal 3. occipital 4. temporal

Question 31

frontal lobe

Answer 31

front region motor functions, executive functions, attention, personality - Phineas Gage

Question 32

parietal lobe

Answer 32

``` top middle (between frontal and occipital) touch and spatial info ```

Question 33

occipital lobe

Answer 33

back of cortex | visual processing

Question 34

temporal lobe

Answer 34

side region | auditory processing

Question 35

boundaries between lobes

Answer 35

sylvian fissure | central sulcus

Question 36

sylvian fissure

Answer 36

boundary of temple lobe

Question 37

central sulcus

Answer 37

divides frontal lobe from parietal lobe

Question 38

postcentral gyrus

Answer 38

a strip of cortex behind cerebral cortex | important for touch

Question 39

precentral gyrus

Answer 39

in frontal lobe | important for motor control