nervous system test

Question 1

the largest functional region of the brain; the convoluted mass that lies superior to all the other parts of the brain.

• in charge of conscious thought, memory, learning
• receives and interprets senses and initiates motor responses

Answer 1

cerebrum

Question 2

blue layer on eye that allows light to be taken and let animals see in the dark

Answer 2

tapetum lucidum

Question 3

order of impulse to brain

Answer 3

nerve, chiasma, Tract, thalamus, cerebral cortex

Question 4

the innermost of the three meninges surrounding the brain and spinal cord
-thin and delicate; doesn’t interrupt brain and protects spine

Answer 4

pia mater

Question 5

image on retina vs image on cortex

Answer 5

retina-upside down

Cortex-flips it for u

Question 6

the transparent anterior portion of the fibrous tunic covering the eye
-controls and focuses entry of light into he eye, protective outer layer

Answer 6

cornea

Question 7

a mass of gelatinous material located within the eyeball in the posterior cavity located between the lens and retina

Answer 7

vitreous humor

Question 8

a clear fluid produced as a filtrate from blood in the choroid plexus of the brain. it circulates through the ventricles of the brain, the central canal of the spinal cord and the subarachnoid space of the brain and spine
-shock absorbing liquid cushion and transports vital materials

Answer 8

cerebrospinal fluid

Question 9

A white segmented insulative cover over the axons of many peripheral neurons that is produced by Schwann cells.
-insulating layer that allows electrical impulses transmit quickly and effectively along nerve cells

Answer 9

myelin sheath

Question 10

a functional region of the hindbrain located inferior to the cerebrum
-carries sensory info from sens. organs and muscles joints and inner ear to the brain to determine motor activ.,equilibrium, and balance

Answer 10

cerebellum

Question 11

the outer of the three meninges that surround the brain and spinal cord
-tough think sheath around spine

Answer 11

dura mater

Question 12

the area on the retina where the optic nerve exits the eye; contains no rod or cone cells
also called blind spot
-no image detection here

Answer 12

optic disk

Question 13

a photoreceptive cell in the retina of the eye that detects very low levels of light

• sensitive to small amounts of light
• respond by initiating a signal

Answer 13

rod cells

Question 14

A photoreceptor in the retina of the eye that is involved in color vision and high visual activity

• color sensitive
• respond to light by initiating a signal

Answer 14

cone cells

Question 15

nerve cells that transmit sensory information (sight, sound, feeling, etc.). They are activated by sensory input, and send projections to other elements of the nervous system, ultimately conveying sensory information to the brain or spinal cord (CNS)

Answer 15

sensory neurons

Question 16

the point at which the two optic nerves cross on the central aspect of the brain
-where nerves travel to get to the tract

Answer 16

optic chiasm

Question 17

sharpness or clarity of a particular sensation

Answer 17

accuity

Question 18

a bilobed endocrine glad located in the anterior neck region that produces hormones influencing growth and metabolism and calcium levels in the blood
-contains clusters of neuron cell bodies=relay systems for sensory impulses on their way to cerebrum and motor going out

Answer 18

thalamus

Question 19

order of light to eye

Answer 19

cornea,aq humor, pupil, lens, vitreous humor, retina

Question 20

CNS vs PNS

Answer 20

CNS-brain and spine

PNS-somatic and automatic

Question 21

the watery fluid that fills the anterior compartment of the eye
-supports shape of eye, removes waste, supples nutrients to parts of the eye without blood supply

Answer 21

aqueous humor

Question 22

the middle of three connective tissues of the brain and spinal cord
-surrounds and protects spine

Answer 22

arachnoid mater

Question 23

the three membranes conceding the brain and spinal cord

-several layers that protect spine from physical injury

Answer 23

meninges

Question 24

later of adipose tissue surrounding and cushioning eye

-protect eye and keep structure/shape

Answer 24

eye fat tissue

Question 25

arc order

Answer 25

stimulus
sensory receptor
afferent
CNS (can have interneuron)
efferent
effector

Question 26

the light sensitive inner layer of the eye that contains rod and cone cells
-forms inner lining of posterior eye, detects light and transports nerve impulses to optic nerve

Answer 26

retina

Question 27

One of the two inferior highly muscular chambers of the heart that push blood into major arteries during their contraction

• filters blood plasma
• responsible for production, transport, and removal of cerebrospinal fluid

Answer 27

ventricles